From fa81d4b455a3b9d4a01b95401ae1716b95ab8ef6 Mon Sep 17 00:00:00 2001
From: wbot <69343704+wtools-bot@users.noreply.github.com>
Date: Sat, 29 Jun 2024 20:39:03 +0300
Subject: [PATCH] NOT READY : refactoring willbe (#1379)

evolve macro_tools and willbe
---
 Cargo.toml                                    |   6 +
 bash.exe.stackdump                            |  38 -
 .../instance_of/src/typing/implements_lib.rs  |   2 +
 .../src/typing/inspect_type_lib.rs            |   2 +
 .../instance_of/src/typing/is_slice_lib.rs    |   2 +
 module/alias/instance_of/src/typing/typing.rs |   2 +
 module/alias/werror/Cargo.toml                |  16 +-
 module/alias/winterval/Cargo.toml             |   2 +-
 module/alias/wtest/Cargo.toml                 |   2 +-
 .../wtest_basic/src/_blank/standard_lib.rs    |   2 +
 module/blank/willbe_old/Cargo.toml            |  80 --
 module/blank/willbe_old/License               |  22 -
 module/blank/willbe_old/Readme.md             |  35 -
 .../src/willbe_old/commands/each.rs           | 119 ---
 .../willbe_old/src/willbe_old/commands/end.rs |  61 --
 .../src/willbe_old/commands/init.rs           |  43 -
 .../willbe_old/src/willbe_old/commands/mod.rs |  66 --
 .../src/willbe_old/commands/package/info.rs   |  80 --
 .../src/willbe_old/commands/package/mod.rs    |   8 -
 .../willbe_old/commands/package/publish.rs    |  66 --
 .../src/willbe_old/core/entities/mod.rs       |  10 -
 .../core/entities/package/metadata.rs         | 119 ---
 .../willbe_old/core/entities/package/mod.rs   |  10 -
 .../core/entities/package/package.rs          |  53 --
 .../core/entities/package/verification.rs     |  65 --
 .../src/willbe_old/core/entities/utility.rs   | 124 ---
 .../src/willbe_old/core/entities/workspace.rs |  95 --
 .../src/willbe_old/core/iterators.rs          |  36 -
 .../willbe_old/src/willbe_old/core/mod.rs     |   9 -
 .../blank/willbe_old/src/willbe_old/files.rs  |  34 -
 .../willbe_old/src/willbe_old/willbe_entry.rs |  34 -
 .../willbe_old/src/willbe_old/willbe_lib.rs   |  36 -
 module/blank/willbe_old/tests/smoke_test.rs   |  15 -
 .../tests/willbe_old/_asset/empty/.gitignore  |   4 -
 .../willbe_old/_asset/package/Cargo.toml      |   9 -
 .../tests/willbe_old/_asset/package/License   |   0
 .../tests/willbe_old/_asset/package/Readme.md |   0
 .../willbe_old/_asset/package/src/lib.rs      |  15 -
 .../willbe_old/_asset/package/src/main.rs     |   3 -
 .../_asset/package_no_verified/Cargo.toml     |   8 -
 .../_asset/package_no_verified/src/lib.rs     |   8 -
 .../_asset/package_no_verified/src/main.rs    |   3 -
 .../_asset/workspace_with_deps/Cargo.toml     |   8 -
 .../module/module1/Cargo.toml                 |   8 -
 .../module/module1/src/lib.rs                 |  14 -
 .../module/module2/Cargo.toml                 |   9 -
 .../module/module2/src/lib.rs                 |  14 -
 .../module/module3/Cargo.toml                 |   9 -
 .../module/module3/src/lib.rs                 |  14 -
 .../willbe_old/_asset/workspaces/Cargo.toml   |   9 -
 .../_asset/workspaces/workspace1/Cargo.toml   |   8 -
 .../workspace1/module/module1/Cargo.toml      |   8 -
 .../workspace1/module/module1/src/lib.rs      |  14 -
 .../workspace1/module/module2/Cargo.toml      |   8 -
 .../workspace1/module/module2/src/lib.rs      |  14 -
 .../_asset/workspaces/workspace2/Cargo.toml   |   8 -
 .../workspace2/module/module3/Cargo.toml      |   8 -
 .../workspace2/module/module3/src/lib.rs      |  14 -
 .../workspace2/module/module4/Cargo.toml      |   8 -
 .../workspace2/module/module4/src/lib.rs      |  14 -
 .../workspace2/module/module5/Cargo.toml      |   8 -
 .../workspace2/module/module5/src/lib.rs      |  14 -
 .../willbe_old/tests/willbe_old/tests/from.rs |  38 -
 .../willbe_old/tests/integration/each.rs      | 130 ---
 .../willbe_old/tests/integration/info.rs      |  78 --
 .../tests/willbe_old/tests/integration/mod.rs |   8 -
 .../tests/willbe_old/tests/iterator.rs        | 149 ---
 .../tests/willbe_old/tests/metadata.rs        |  24 -
 .../willbe_old/tests/willbe_old/tests/mod.rs  |  11 -
 .../tests/willbe_old/tests/ordering/mod.rs    |   6 -
 .../tests/ordering/through_workspaces.rs      |  74 --
 .../willbe_old/tests/ordering/workspace.rs    | 103 --
 .../tests/willbe_old/tests/verification.rs    |  26 -
 .../willbe_old/tests/willbe_old/utility.rs    |  71 --
 .../tests/willbe_old/willbe_test.rs           |   7 -
 module/blank/wlang/Cargo.toml                 |   2 +-
 module/blank/wlang/src/standard_lib.rs        |   2 +
 module/core/clone_dyn/Readme.md               |   2 +
 module/core/clone_dyn/src/lib.rs              |   2 +
 module/core/clone_dyn_meta/Cargo.toml         |   4 +-
 module/core/clone_dyn_types/src/lib.rs        |   2 +
 module/core/collection_tools/Readme.md        |   2 +-
 .../examples/collection_tools_trivial.rs      |   2 +-
 module/core/collection_tools/src/lib.rs       |   2 +
 module/core/data_type/Cargo.toml              |   2 +-
 module/core/data_type/src/dt.rs               |   2 +
 module/core/data_type/src/lib.rs              |   4 +-
 module/core/derive_tools/Cargo.toml           |   2 +-
 module/core/derive_tools/src/lib.rs           |   2 +
 module/core/derive_tools/tests/inc/mod.rs     |  96 +-
 module/core/derive_tools_meta/Cargo.toml      |   7 +-
 module/core/derive_tools_meta/src/derive.rs   |   1 -
 .../core/derive_tools_meta/src/derive/from.rs |   2 +-
 module/core/diagnostics_tools/Cargo.toml      |   2 +-
 module/core/diagnostics_tools/src/diag/cta.rs |   2 +
 .../core/diagnostics_tools/src/diag/layout.rs |   2 +
 module/core/diagnostics_tools/src/diag/mod.rs |   2 +
 module/core/diagnostics_tools/src/diag/rta.rs |   2 +
 module/core/diagnostics_tools/src/lib.rs      |   2 +
 module/core/error_tools/Cargo.toml            |  14 +-
 module/core/error_tools/src/assert.rs         |   2 +
 module/core/error_tools/src/error.rs          |   3 +
 module/core/error_tools/src/lib.rs            |  93 +-
 module/core/error_tools/src/typed.rs          |  60 ++
 module/core/error_tools/src/untyped.rs        |  60 ++
 .../error_tools/tests/inc/for_app_test.rs     |   4 +-
 module/core/for_each/Cargo.toml               |   2 +-
 module/core/for_each/src/lib.rs               |   2 +
 module/core/format_tools/Cargo.toml           |   2 +-
 module/core/format_tools/src/format.rs        |   4 +
 .../core/format_tools/src/format/as_table.rs  |   2 +
 module/core/format_tools/src/format/print.rs  |   2 +
 module/core/format_tools/src/format/table.rs  |   2 +
 .../core/format_tools/src/format/to_string.rs |   2 +
 .../src/format/to_string_with_fallback.rs     |   2 +
 .../core/format_tools/src/format/wrapper.rs   |   2 +
 module/core/format_tools/src/lib.rs           |   2 +
 module/core/former/Cargo.toml                 |  19 +-
 module/core/former/src/lib.rs                 |  52 +-
 .../inc/components_tests/component_assign.rs  |   1 +
 .../only_test/component_assign.rs             |   7 +
 ...lision_former_hashmap_without_parameter.rs |   2 +
 ...llision_former_vector_without_parameter.rs |   2 +
 .../tests/inc/former_tests/name_collisions.rs |   2 +
 module/core/former_meta/Cargo.toml            |   8 +-
 module/core/former_types/Cargo.toml           |  11 +-
 module/core/former_types/Readme.md            |   4 +-
 .../examples/former_types_trivial.rs          |   4 +-
 module/core/former_types/src/collection.rs    |   2 +
 .../src/collection/binary_heap.rs             |   3 +-
 module/core/former_types/src/component.rs     |  12 +
 module/core/former_types/src/lib.rs           |  16 +-
 module/core/former_types/tests/inc/mod.rs     |   3 +-
 module/core/fs_tools/src/fs/fs.rs             |   2 +
 module/core/fs_tools/src/fs/lib.rs            |   2 +
 module/core/implements/Cargo.toml             |   2 +-
 module/core/implements/src/lib.rs             |   2 +
 .../core/impls_index/src/impls_index/func.rs  |   2 +
 .../core/impls_index/src/impls_index/impls.rs |   2 +
 .../core/impls_index/src/impls_index/mod.rs   |   2 +
 module/core/impls_index/src/lib.rs            |   2 +
 module/core/impls_index_meta/Cargo.toml       |   2 +-
 module/core/include_md/Cargo.toml             |   2 +-
 .../include_md/src/_blank/standard_lib.rs     |   2 +
 module/core/inspect_type/Cargo.toml           |   2 +-
 module/core/inspect_type/src/lib.rs           |   2 +
 module/core/interval_adapter/Cargo.toml       |   2 +-
 module/core/interval_adapter/src/lib.rs       |   2 +
 module/core/is_slice/Cargo.toml               |   2 +-
 module/core/is_slice/src/lib.rs               |   2 +
 module/core/iter_tools/Cargo.toml             |   9 +-
 module/core/iter_tools/src/iter.rs            | 197 +++-
 module/core/iter_tools/src/lib.rs             |  13 +-
 module/core/macro_tools/Cargo.toml            |  66 +-
 module/core/macro_tools/Readme.md             |  18 +-
 .../examples/macro_tools_attr_prop.rs         |  18 +-
 module/core/macro_tools/src/attr.rs           |  59 +-
 module/core/macro_tools/src/attr_prop.rs      |  46 +-
 .../core/macro_tools/src/attr_prop/boolean.rs |   2 +-
 .../src/attr_prop/boolean_optional.rs         |   3 +-
 .../macro_tools/src/attr_prop/singletone.rs   |   2 +-
 .../src/attr_prop/singletone_optional.rs      |   2 +-
 module/core/macro_tools/src/attr_prop/syn.rs  |   2 +-
 .../macro_tools/src/attr_prop/syn_optional.rs |   2 +-
 module/core/macro_tools/src/components.rs     |  70 ++
 module/core/macro_tools/src/container_kind.rs |   6 +-
 module/core/macro_tools/src/ct.rs             |  63 ++
 module/core/macro_tools/src/ct/str.rs         |   8 +
 module/core/macro_tools/src/derive.rs         |   4 +-
 module/core/macro_tools/src/diag.rs           |  15 +-
 module/core/macro_tools/src/drop.rs           |   5 +-
 module/core/macro_tools/src/equation.rs       |   5 +-
 module/core/macro_tools/src/generic_args.rs   |   5 +-
 module/core/macro_tools/src/generic_params.rs |   7 +-
 module/core/macro_tools/src/item.rs           |   8 +-
 module/core/macro_tools/src/item_struct.rs    |  10 +-
 module/core/macro_tools/src/iter.rs           | 168 +---
 module/core/macro_tools/src/kw.rs             |  69 ++
 module/core/macro_tools/src/lib.rs            | 352 ++++---
 module/core/macro_tools/src/name.rs           |   7 +-
 module/core/macro_tools/src/phantom.rs        |   7 +-
 module/core/macro_tools/src/punctuated.rs     |   7 +-
 module/core/macro_tools/src/quantifier.rs     |  19 +-
 module/core/macro_tools/src/struct_like.rs    |   9 +-
 module/core/macro_tools/src/tokens.rs         |   7 +-
 module/core/macro_tools/src/typ.rs            |   8 +-
 .../macro_tools/tests/inc/attr_prop_test.rs   |  11 +-
 .../core/macro_tools/tests/inc/attr_test.rs   |  66 ++
 .../tests/inc/compile_time_test.rs            |  40 +
 .../tests/inc/container_kind_test.rs          |   1 +
 .../core/macro_tools/tests/inc/derive_test.rs |   2 +-
 .../core/macro_tools/tests/inc/diag_test.rs   |   1 +
 .../macro_tools/tests/inc/equation_test.rs    |   3 +
 .../tests/inc/generic_args_test.rs            |   1 +
 .../tests/inc/generic_params_test.rs          |   2 +
 module/core/macro_tools/tests/inc/mod.rs      |   4 +-
 .../macro_tools/tests/inc/phantom_test.rs     |   1 +
 .../macro_tools/tests/inc/quantifier_test.rs  |   1 +
 .../core/macro_tools/tests/inc/syntax_test.rs |  83 --
 .../core/macro_tools/tests/inc/tokens_test.rs |   1 +
 .../tests/inc/{typ_Test.rs => typ_test.rs}    |  19 +-
 module/core/mem_tools/Cargo.toml              |   2 +-
 module/core/mem_tools/src/lib.rs              |   2 +
 module/core/mem_tools/src/mem.rs              |   2 +
 module/core/meta_tools/Cargo.toml             |   2 +-
 module/core/mod_interface/Cargo.toml          |   2 +-
 module/core/mod_interface/Readme.md           |   2 +
 module/core/mod_interface/src/lib.rs          |   2 +
 .../tests/inc/derive/attr_debug/layer_a.rs    |   2 +
 .../tests/inc/derive/layer/layer_a.rs         |   2 +
 .../tests/inc/derive/layer/layer_b.rs         |   2 +
 .../tests/inc/derive/layer_bad_vis/layer_a.rs |   2 +
 .../inc/derive/layer_unknown_vis/layer_a.rs   |   2 +
 .../tests/inc/derive/use_as/layer_x.rs        |   2 +
 .../tests/inc/derive/use_as/layer_y.rs        |   2 +
 .../tests/inc/derive/use_as/manual_only.rs    |   2 +
 .../tests/inc/derive/use_basic/layer_a.rs     |   2 +
 .../tests/inc/derive/use_basic/layer_b.rs     |   2 +
 .../tests/inc/manual/layer/layer_a.rs         |   2 +
 .../tests/inc/manual/layer/layer_b.rs         |   2 +
 .../tests/inc/manual/layer/mod.rs             |   2 +
 .../tests/inc/manual/layer_use/layer_a.rs     |   2 +
 .../tests/inc/manual/layer_use/layer_b.rs     |   2 +
 .../tests/inc/manual/layer_use/mod.rs         |   2 +
 .../tests/inc/manual/micro_modules/mod.rs     |   2 +
 .../tests/inc/manual/micro_modules_two/mod.rs |   2 +
 module/core/mod_interface_meta/Cargo.toml     |   2 +-
 module/core/mod_interface_meta/src/impls.rs   |  18 +-
 module/core/mod_interface_meta/src/record.rs  |  12 +-
 .../core/mod_interface_meta/src/use_tree.rs   |  12 +-
 .../core/mod_interface_meta/src/visibility.rs |  22 +-
 module/core/process_tools/Cargo.toml          |   4 +-
 module/core/program_tools/Cargo.toml          |   2 +-
 module/core/program_tools/src/lib.rs          |   2 +-
 module/core/proper_path_tools/Cargo.toml      |  14 +-
 module/core/proper_path_tools/src/lib.rs      |   7 +
 module/core/proper_path_tools/src/path.rs     | 283 +++---
 .../src/path/absolute_path.rs                 | 279 +++++-
 .../src/path/canonical_path.rs                | 287 ++++++
 .../src/path/current_path.rs                  |  62 ++
 .../proper_path_tools/src/path/native_path.rs | 302 ++++++
 .../core/proper_path_tools/src/transitive.rs  | 201 ++++
 .../tests/inc/absolute_path.rs                |  40 +-
 .../tests/inc/current_path.rs                 |  33 +
 .../core/proper_path_tools/tests/inc/mod.rs   |   3 +
 .../tests/inc/path_canonicalize.rs            |  50 +
 .../proper_path_tools/tests/inc/path_join.rs  | 420 ++++++---
 .../tests/inc/path_relative.rs                |   2 +-
 .../proper_path_tools/tests/inc/transitive.rs |  86 ++
 module/core/reflect_tools/Cargo.toml          |   2 +-
 module/core/reflect_tools/src/lib.rs          |   2 +
 module/core/reflect_tools/src/reflect.rs      |   2 +
 .../reflect_tools/src/reflect/axiomatic.rs    |   2 +
 .../reflect_tools/src/reflect/entity_array.rs |   2 +
 .../src/reflect/entity_hashmap.rs             |   6 +-
 .../src/reflect/entity_hashset.rs             |   4 +-
 .../reflect_tools/src/reflect/entity_slice.rs |  14 +-
 .../reflect_tools/src/reflect/entity_vec.rs   |   4 +-
 .../core/reflect_tools/src/reflect/fields.rs  |   2 +
 .../reflect_tools/src/reflect/primitive.rs    |   2 +
 .../core/reflect_tools/src/reflect/wrapper.rs |   2 +
 module/core/reflect_tools_meta/Cargo.toml     |   2 +-
 module/core/strs_tools/Cargo.toml             |   2 +-
 module/core/strs_tools/src/lib.rs             |   2 +
 .../core/strs_tools/src/string/indentation.rs |   2 +
 module/core/strs_tools/src/string/isolate.rs  |   2 +
 module/core/strs_tools/src/string/mod.rs      |   2 +
 module/core/strs_tools/src/string/number.rs   |   2 +
 .../strs_tools/src/string/parse_request.rs    |   2 +
 module/core/strs_tools/src/string/split.rs    |   2 +
 module/core/test_tools/Cargo.toml             |   2 +-
 module/core/time_tools/Cargo.toml             |   2 +-
 module/core/time_tools/src/lib.rs             |   2 +
 module/core/typing_tools/Cargo.toml           |   2 +-
 module/core/typing_tools/src/lib.rs           |   2 +
 module/core/typing_tools/src/typing.rs        |   2 +
 module/core/variadic_from/Cargo.toml          |   2 +-
 module/core/variadic_from/src/lib.rs          |   2 +
 module/core/variadic_from/src/variadic.rs     |   2 +
 module/core/wtools/Cargo.toml                 |  14 +-
 module/core/wtools/src/lib.rs                 |   2 +
 module/move/assistant/src/client.rs           |   2 +
 module/move/assistant/src/lib.rs              |   2 +
 module/move/crates_tools/src/lib.rs           |   2 +
 module/move/deterministic_rand/Cargo.toml     |   2 +-
 module/move/graphs_tools/Cargo.toml           |   2 +-
 module/move/plot_interface/Cargo.toml         |   2 +-
 module/move/sqlx_query/Cargo.toml             |   2 +-
 module/move/sqlx_query/src/lib.rs             |   2 +
 module/move/willbe/Cargo.toml                 |  37 +-
 .../willbe/src/{description.md => Readme.md}  |   0
 module/move/willbe/src/action/cicd_renew.rs   | 267 ++++--
 module/move/willbe/src/action/deploy_renew.rs | 313 ++++---
 module/move/willbe/src/action/features.rs     |  42 +-
 module/move/willbe/src/action/list.rs         | 679 ++++++++------
 module/move/willbe/src/action/main_header.rs  | 161 ++--
 module/move/willbe/src/action/mod.rs          |   2 -
 module/move/willbe/src/action/publish.rs      | 177 ++--
 module/move/willbe/src/action/publish_diff.rs | 113 ++-
 .../src/action/readme_health_table_renew.rs   | 478 ++++++----
 .../action/readme_modules_headers_renew.rs    | 235 +++--
 module/move/willbe/src/action/test.rs         | 153 +--
 .../move/willbe/src/action/workspace_renew.rs | 179 ++--
 module/move/willbe/src/bin/cargo-will.rs      |   2 +-
 module/move/willbe/src/bin/will.rs            |   5 +-
 module/move/willbe/src/bin/willbe.rs          |   2 +-
 module/move/willbe/src/command/cicd_renew.rs  |   8 +-
 .../move/willbe/src/command/deploy_renew.rs   |  13 +-
 module/move/willbe/src/command/features.rs    |  24 +-
 module/move/willbe/src/command/list.rs        |  52 +-
 module/move/willbe/src/command/main_header.rs |  13 +-
 module/move/willbe/src/command/publish.rs     |  63 +-
 .../move/willbe/src/command/publish_diff.rs   |  18 +-
 .../src/command/readme_headers_renew.rs       |  52 +-
 .../src/command/readme_health_table_renew.rs  |   8 +-
 .../command/readme_modules_headers_renew.rs   |  10 +-
 module/move/willbe/src/command/test.rs        |  91 +-
 .../willbe/src/command/workspace_renew.rs     |  19 +-
 module/move/willbe/src/entity/channel.rs      |  15 +-
 module/move/willbe/src/entity/code.rs         |  43 +
 module/move/willbe/src/entity/dependency.rs   | 285 ++++++
 module/move/willbe/src/entity/diff.rs         |  14 +-
 module/move/willbe/src/entity/features.rs     |  26 +-
 module/move/willbe/src/entity/files.rs        |  54 ++
 .../move/willbe/src/entity/files/crate_dir.rs | 259 ++++++
 module/move/willbe/src/entity/files/either.rs |  90 ++
 .../willbe/src/entity/files/manifest_file.rs  | 276 ++++++
 .../willbe/src/entity/files/source_file.rs    | 270 ++++++
 module/move/willbe/src/entity/git.rs          |  88 ++
 module/move/willbe/src/entity/manifest.rs     | 203 +---
 module/move/willbe/src/entity/mod.rs          |  87 +-
 module/move/willbe/src/entity/optimization.rs |  19 +-
 module/move/willbe/src/entity/package.rs      | 877 ++----------------
 .../willbe/src/entity/package_md_extension.rs | 152 +++
 module/move/willbe/src/entity/packages.rs     |  36 +-
 module/move/willbe/src/entity/packed_crate.rs |   9 +-
 module/move/willbe/src/entity/progress_bar.rs | 108 +++
 module/move/willbe/src/entity/publish.rs      | 441 +++++++++
 module/move/willbe/src/entity/test.rs         | 331 +++----
 module/move/willbe/src/entity/version.rs      | 160 ++--
 module/move/willbe/src/entity/workspace.rs    | 481 ++++------
 .../move/willbe/src/entity/workspace_graph.rs |  38 +
 .../src/entity/workspace_md_extension.rs      |  70 ++
 .../willbe/src/entity/workspace_package.rs    | 212 +++++
 module/move/willbe/src/lib.rs                 |  10 +-
 module/move/willbe/src/tool/_path.rs          | 170 ----
 module/move/willbe/src/tool/cargo.rs          |  77 +-
 module/move/willbe/src/tool/collection.rs     |  12 +
 module/move/willbe/src/tool/error.rs          |  55 ++
 module/move/willbe/src/tool/files.rs          |   8 +-
 module/move/willbe/src/tool/git.rs            |  35 +-
 module/move/willbe/src/tool/graph.rs          |  73 +-
 module/move/willbe/src/tool/http.rs           |   5 +-
 module/move/willbe/src/tool/iter.rs           |  16 +
 module/move/willbe/src/tool/macros.rs         |  15 +
 module/move/willbe/src/tool/mod.rs            |  58 +-
 module/move/willbe/src/tool/path.rs           |  12 +
 module/move/willbe/src/tool/query.rs          |  13 +-
 module/move/willbe/src/tool/repository.rs     |  61 ++
 module/move/willbe/src/tool/sha.rs            |  26 -
 module/move/willbe/src/tool/template.rs       | 277 ++++--
 module/move/willbe/src/tool/tree.rs           | 167 ++++
 module/move/willbe/src/tool/url.rs            |  12 +-
 module/move/willbe/src/wtools.rs              |  56 +-
 .../move/willbe/template/deploy/Makefile.hbs  | 128 +--
 .../move/willbe/template/workspace/Makefile   |  78 +-
 .../workspace/module/module1/Cargo.toml.x     |   2 +-
 .../module1/examples/module1_example.rs       |   4 +-
 .../workspace/module/module1/src/lib.rs       |   2 +-
 .../module/module1/tests/hello_test.rs        |   2 +-
 .../{action => action_tests}/cicd_renew.rs    |  18 +-
 .../inc/{action => action_tests}/features.rs  |  13 +-
 .../inc/{action => action_tests}/list.rs      |   0
 .../inc/{action => action_tests}/list/data.rs |  48 +-
 .../{action => action_tests}/list/format.rs   |  89 +-
 .../{action => action_tests}/main_header.rs   |   2 +-
 .../tests/inc/{action => action_tests}/mod.rs |   0
 .../readme_health_table_renew.rs              |   0
 .../readme_modules_headers_renew.rs           |  30 +-
 .../inc/{action => action_tests}/test.rs      | 132 +--
 .../workspace_renew.rs                        |   0
 .../willbe/tests/inc/command/tests_run.rs     |   9 +-
 .../willbe/tests/inc/entity/dependencies.rs   | 129 ++-
 module/move/willbe/tests/inc/entity/diff.rs   |  27 +-
 .../move/willbe/tests/inc/entity/features.rs  |  28 +-
 .../move/willbe/tests/inc/entity/version.rs   |  46 +-
 module/move/willbe/tests/inc/helper.rs        | 116 +++
 module/move/willbe/tests/inc/helpers.rs       |   1 -
 module/move/willbe/tests/inc/mod.rs           |  22 +-
 module/move/willbe/tests/inc/package.rs       |   8 +-
 module/move/willbe/tests/inc/tool/graph.rs    | 217 -----
 .../move/willbe/tests/inc/tool/graph_test.rs  | 215 +++++
 module/move/willbe/tests/inc/tool/mod.rs      |   9 +-
 module/move/willbe/tests/inc/tool/process.rs  |  65 --
 .../inc/tool/{query.rs => query_test.rs}      |  11 +-
 module/move/wplot/Cargo.toml                  |   2 +-
 module/postponed/_video_experiment/Cargo.toml |   2 +-
 module/postponed/non_std/Cargo.toml           |  12 +-
 module/postponed/std_tools/Cargo.toml         |  12 +-
 module/postponed/std_x/Cargo.toml             |  12 +-
 module/postponed/type_constructor/Cargo.toml  |   2 +-
 module/postponed/type_constructor/src/lib.rs  |   2 +
 .../src/type_constuctor/enumerable.rs         |   2 +
 .../src/type_constuctor/helper.rs             |   2 +
 .../src/type_constuctor/many.rs               |   2 +
 .../src/type_constuctor/mod.rs                |   2 +
 .../src/type_constuctor/no_many.rs            |   2 +
 .../src/type_constuctor/pair.rs               |   2 +
 .../src/type_constuctor/single.rs             |   2 +
 .../src/type_constuctor/traits.rs             |   2 +
 .../src/type_constuctor/types.rs              |   2 +
 .../src/type_constuctor/vectorized_from.rs    |   2 +
 module/postponed/wpublisher/Cargo.toml        |   2 +-
 .../_template_procedural_macro/front/lib.rs   |   2 +
 .../_template_procedural_macro/runtime/lib.rs |   2 +
 module/template/layer/layer.rs                |   2 +
 step/Cargo.toml                               |  24 +
 step/src/bin/sources.rs                       |  66 ++
 418 files changed, 10147 insertions(+), 7195 deletions(-)
 delete mode 100644 bash.exe.stackdump
 delete mode 100644 module/blank/willbe_old/Cargo.toml
 delete mode 100644 module/blank/willbe_old/License
 delete mode 100644 module/blank/willbe_old/Readme.md
 delete mode 100644 module/blank/willbe_old/src/willbe_old/commands/each.rs
 delete mode 100644 module/blank/willbe_old/src/willbe_old/commands/end.rs
 delete mode 100644 module/blank/willbe_old/src/willbe_old/commands/init.rs
 delete mode 100644 module/blank/willbe_old/src/willbe_old/commands/mod.rs
 delete mode 100644 module/blank/willbe_old/src/willbe_old/commands/package/info.rs
 delete mode 100644 module/blank/willbe_old/src/willbe_old/commands/package/mod.rs
 delete mode 100644 module/blank/willbe_old/src/willbe_old/commands/package/publish.rs
 delete mode 100644 module/blank/willbe_old/src/willbe_old/core/entities/mod.rs
 delete mode 100644 module/blank/willbe_old/src/willbe_old/core/entities/package/metadata.rs
 delete mode 100644 module/blank/willbe_old/src/willbe_old/core/entities/package/mod.rs
 delete mode 100644 module/blank/willbe_old/src/willbe_old/core/entities/package/package.rs
 delete mode 100644 module/blank/willbe_old/src/willbe_old/core/entities/package/verification.rs
 delete mode 100644 module/blank/willbe_old/src/willbe_old/core/entities/utility.rs
 delete mode 100644 module/blank/willbe_old/src/willbe_old/core/entities/workspace.rs
 delete mode 100644 module/blank/willbe_old/src/willbe_old/core/iterators.rs
 delete mode 100644 module/blank/willbe_old/src/willbe_old/core/mod.rs
 delete mode 100644 module/blank/willbe_old/src/willbe_old/files.rs
 delete mode 100644 module/blank/willbe_old/src/willbe_old/willbe_entry.rs
 delete mode 100644 module/blank/willbe_old/src/willbe_old/willbe_lib.rs
 delete mode 100644 module/blank/willbe_old/tests/smoke_test.rs
 delete mode 100644 module/blank/willbe_old/tests/willbe_old/_asset/empty/.gitignore
 delete mode 100644 module/blank/willbe_old/tests/willbe_old/_asset/package/Cargo.toml
 delete mode 100644 module/blank/willbe_old/tests/willbe_old/_asset/package/License
 delete mode 100644 module/blank/willbe_old/tests/willbe_old/_asset/package/Readme.md
 delete mode 100644 module/blank/willbe_old/tests/willbe_old/_asset/package/src/lib.rs
 delete mode 100644 module/blank/willbe_old/tests/willbe_old/_asset/package/src/main.rs
 delete mode 100644 module/blank/willbe_old/tests/willbe_old/_asset/package_no_verified/Cargo.toml
 delete mode 100644 module/blank/willbe_old/tests/willbe_old/_asset/package_no_verified/src/lib.rs
 delete mode 100644 module/blank/willbe_old/tests/willbe_old/_asset/package_no_verified/src/main.rs
 delete mode 100644 module/blank/willbe_old/tests/willbe_old/_asset/workspace_with_deps/Cargo.toml
 delete mode 100644 module/blank/willbe_old/tests/willbe_old/_asset/workspace_with_deps/module/module1/Cargo.toml
 delete mode 100644 module/blank/willbe_old/tests/willbe_old/_asset/workspace_with_deps/module/module1/src/lib.rs
 delete mode 100644 module/blank/willbe_old/tests/willbe_old/_asset/workspace_with_deps/module/module2/Cargo.toml
 delete mode 100644 module/blank/willbe_old/tests/willbe_old/_asset/workspace_with_deps/module/module2/src/lib.rs
 delete mode 100644 module/blank/willbe_old/tests/willbe_old/_asset/workspace_with_deps/module/module3/Cargo.toml
 delete mode 100644 module/blank/willbe_old/tests/willbe_old/_asset/workspace_with_deps/module/module3/src/lib.rs
 delete mode 100644 module/blank/willbe_old/tests/willbe_old/_asset/workspaces/Cargo.toml
 delete mode 100644 module/blank/willbe_old/tests/willbe_old/_asset/workspaces/workspace1/Cargo.toml
 delete mode 100644 module/blank/willbe_old/tests/willbe_old/_asset/workspaces/workspace1/module/module1/Cargo.toml
 delete mode 100644 module/blank/willbe_old/tests/willbe_old/_asset/workspaces/workspace1/module/module1/src/lib.rs
 delete mode 100644 module/blank/willbe_old/tests/willbe_old/_asset/workspaces/workspace1/module/module2/Cargo.toml
 delete mode 100644 module/blank/willbe_old/tests/willbe_old/_asset/workspaces/workspace1/module/module2/src/lib.rs
 delete mode 100644 module/blank/willbe_old/tests/willbe_old/_asset/workspaces/workspace2/Cargo.toml
 delete mode 100644 module/blank/willbe_old/tests/willbe_old/_asset/workspaces/workspace2/module/module3/Cargo.toml
 delete mode 100644 module/blank/willbe_old/tests/willbe_old/_asset/workspaces/workspace2/module/module3/src/lib.rs
 delete mode 100644 module/blank/willbe_old/tests/willbe_old/_asset/workspaces/workspace2/module/module4/Cargo.toml
 delete mode 100644 module/blank/willbe_old/tests/willbe_old/_asset/workspaces/workspace2/module/module4/src/lib.rs
 delete mode 100644 module/blank/willbe_old/tests/willbe_old/_asset/workspaces/workspace2/module/module5/Cargo.toml
 delete mode 100644 module/blank/willbe_old/tests/willbe_old/_asset/workspaces/workspace2/module/module5/src/lib.rs
 delete mode 100644 module/blank/willbe_old/tests/willbe_old/tests/from.rs
 delete mode 100644 module/blank/willbe_old/tests/willbe_old/tests/integration/each.rs
 delete mode 100644 module/blank/willbe_old/tests/willbe_old/tests/integration/info.rs
 delete mode 100644 module/blank/willbe_old/tests/willbe_old/tests/integration/mod.rs
 delete mode 100644 module/blank/willbe_old/tests/willbe_old/tests/iterator.rs
 delete mode 100644 module/blank/willbe_old/tests/willbe_old/tests/metadata.rs
 delete mode 100644 module/blank/willbe_old/tests/willbe_old/tests/mod.rs
 delete mode 100644 module/blank/willbe_old/tests/willbe_old/tests/ordering/mod.rs
 delete mode 100644 module/blank/willbe_old/tests/willbe_old/tests/ordering/through_workspaces.rs
 delete mode 100644 module/blank/willbe_old/tests/willbe_old/tests/ordering/workspace.rs
 delete mode 100644 module/blank/willbe_old/tests/willbe_old/tests/verification.rs
 delete mode 100644 module/blank/willbe_old/tests/willbe_old/utility.rs
 delete mode 100644 module/blank/willbe_old/tests/willbe_old/willbe_test.rs
 create mode 100644 module/core/error_tools/src/typed.rs
 create mode 100644 module/core/error_tools/src/untyped.rs
 create mode 100644 module/core/macro_tools/src/components.rs
 create mode 100644 module/core/macro_tools/src/ct.rs
 create mode 100644 module/core/macro_tools/src/ct/str.rs
 create mode 100644 module/core/macro_tools/src/kw.rs
 create mode 100644 module/core/macro_tools/tests/inc/compile_time_test.rs
 delete mode 100644 module/core/macro_tools/tests/inc/syntax_test.rs
 rename module/core/macro_tools/tests/inc/{typ_Test.rs => typ_test.rs} (94%)
 create mode 100644 module/core/proper_path_tools/src/path/canonical_path.rs
 create mode 100644 module/core/proper_path_tools/src/path/current_path.rs
 create mode 100644 module/core/proper_path_tools/src/path/native_path.rs
 create mode 100644 module/core/proper_path_tools/src/transitive.rs
 create mode 100644 module/core/proper_path_tools/tests/inc/current_path.rs
 create mode 100644 module/core/proper_path_tools/tests/inc/path_canonicalize.rs
 create mode 100644 module/core/proper_path_tools/tests/inc/transitive.rs
 rename module/move/willbe/src/{description.md => Readme.md} (100%)
 create mode 100644 module/move/willbe/src/entity/code.rs
 create mode 100644 module/move/willbe/src/entity/dependency.rs
 create mode 100644 module/move/willbe/src/entity/files.rs
 create mode 100644 module/move/willbe/src/entity/files/crate_dir.rs
 create mode 100644 module/move/willbe/src/entity/files/either.rs
 create mode 100644 module/move/willbe/src/entity/files/manifest_file.rs
 create mode 100644 module/move/willbe/src/entity/files/source_file.rs
 create mode 100644 module/move/willbe/src/entity/git.rs
 create mode 100644 module/move/willbe/src/entity/package_md_extension.rs
 create mode 100644 module/move/willbe/src/entity/progress_bar.rs
 create mode 100644 module/move/willbe/src/entity/publish.rs
 create mode 100644 module/move/willbe/src/entity/workspace_graph.rs
 create mode 100644 module/move/willbe/src/entity/workspace_md_extension.rs
 create mode 100644 module/move/willbe/src/entity/workspace_package.rs
 delete mode 100644 module/move/willbe/src/tool/_path.rs
 create mode 100644 module/move/willbe/src/tool/collection.rs
 create mode 100644 module/move/willbe/src/tool/error.rs
 create mode 100644 module/move/willbe/src/tool/iter.rs
 create mode 100644 module/move/willbe/src/tool/macros.rs
 create mode 100644 module/move/willbe/src/tool/path.rs
 create mode 100644 module/move/willbe/src/tool/repository.rs
 delete mode 100644 module/move/willbe/src/tool/sha.rs
 create mode 100644 module/move/willbe/src/tool/tree.rs
 rename module/move/willbe/tests/inc/{action => action_tests}/cicd_renew.rs (92%)
 rename module/move/willbe/tests/inc/{action => action_tests}/features.rs (86%)
 rename module/move/willbe/tests/inc/{action => action_tests}/list.rs (100%)
 rename module/move/willbe/tests/inc/{action => action_tests}/list/data.rs (87%)
 rename module/move/willbe/tests/inc/{action => action_tests}/list/format.rs (82%)
 rename module/move/willbe/tests/inc/{action => action_tests}/main_header.rs (99%)
 rename module/move/willbe/tests/inc/{action => action_tests}/mod.rs (100%)
 rename module/move/willbe/tests/inc/{action => action_tests}/readme_health_table_renew.rs (100%)
 rename module/move/willbe/tests/inc/{action => action_tests}/readme_modules_headers_renew.rs (83%)
 rename module/move/willbe/tests/inc/{action => action_tests}/test.rs (68%)
 rename module/move/willbe/tests/inc/{action => action_tests}/workspace_renew.rs (100%)
 create mode 100644 module/move/willbe/tests/inc/helper.rs
 delete mode 100644 module/move/willbe/tests/inc/helpers.rs
 delete mode 100644 module/move/willbe/tests/inc/tool/graph.rs
 create mode 100644 module/move/willbe/tests/inc/tool/graph_test.rs
 delete mode 100644 module/move/willbe/tests/inc/tool/process.rs
 rename module/move/willbe/tests/inc/tool/{query.rs => query_test.rs} (97%)
 create mode 100644 step/Cargo.toml
 create mode 100644 step/src/bin/sources.rs

diff --git a/Cargo.toml b/Cargo.toml
index 1b52be3898..323238d738 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -6,6 +6,7 @@ members = [
   "module/core/*",
   "module/move/*",
   "module/test/*",
+  "step",
 ]
 exclude = [
   "-*",
@@ -45,6 +46,11 @@ restriction = "warn"
 pedantic = "warn"
 # Denies undocumented unsafe blocks.
 undocumented_unsafe_blocks = "deny"
+# xxx : check
+# Warns if core could be used instead of std, but didn't
+std_instead_of_core = "warn"
+# Warns if alloc could be used instead of std, but didn't
+std_instead_of_alloc = "warn"
 # xxx : document
 single_call_fn = "allow"
 inline_always = "allow"
diff --git a/bash.exe.stackdump b/bash.exe.stackdump
deleted file mode 100644
index ef9b31e0d7..0000000000
--- a/bash.exe.stackdump
+++ /dev/null
@@ -1,38 +0,0 @@
-Stack trace:
-Frame         Function      Args
-0000005FF160  00021006118E (0002102B5B12, 000210272B3E, 00000000005E, 0000005FACC0) msys-2.0.dll+0x2118E
-0000005FF160  0002100469BA (000000000000, 000000000000, 000000000130, 000000001000) msys-2.0.dll+0x69BA
-0000005FF160  0002100469F2 (000000000000, 0000000005AF, 00000000005E, 000000000000) msys-2.0.dll+0x69F2
-0000005FF160  0002101791E8 (0002102B5892, 000800000000, 00080000DFB8, 000000000000) msys-2.0.dll+0x1391E8
-0000005FF160  000210183B67 (000000000000, 0002102280C8, 0002102280B0, 0000005FD320) msys-2.0.dll+0x143B67
-0000005FF160  000210046DF4 (00021031C800, 0000005FD320, 000000000000, 000000000000) msys-2.0.dll+0x6DF4
-0000005FF160  00021004850F (00007FFE0384, 000000000000, 000000000000, 000000000000) msys-2.0.dll+0x850F
-0000005FF160  00021007251C (000000000000, 000000713234, 000000000000, 000000000000) msys-2.0.dll+0x3251C
-0000005FF400  7FFF332D869F (000210040000, 000000000001, 000000000000, 7FFF333E8A70) ntdll.dll+0x2869F
-0000005FF400  7FFF3331D03D (0000005FF300, 000000000000, 00000071A078, 000000000001) ntdll.dll+0x6D03D
-0000005FF400  7FFF3331CDEE (0000007130D0, 0000005FF400, 000000718450, 000000000000) ntdll.dll+0x6CDEE
-0000005FF400  7FFF3331CE60 (7FFF333EB860, 000000000000, 000000213000, 7FFF00000000) ntdll.dll+0x6CE60
-000000000000  7FFF3338EA39 (000000000000, 000000000000, 000000000001, 000000000000) ntdll.dll+0xDEA39
-000000000000  7FFF3337A744 (7FFF332B0000, 000000213050, 0000002157EE, 000000000000) ntdll.dll+0xCA744
-000000000000  7FFF33323EA3 (000000000000, 0000005FFAD0, 000000000000, 000000000000) ntdll.dll+0x73EA3
-000000000000  7FFF33323DCE (000000000000, 0000005FFAD0, 000000000000, 000000000000) ntdll.dll+0x73DCE
-End of stack trace
-Loaded modules:
-000100400000 bash.exe
-7FFF332B0000 ntdll.dll
-7FFF32910000 KERNEL32.DLL
-7FFF307E0000 KERNELBASE.dll
-7FFF330C0000 USER32.dll
-7FFF307B0000 win32u.dll
-000210040000 msys-2.0.dll
-7FFF328E0000 GDI32.dll
-7FFF305D0000 gdi32full.dll
-7FFF30ED0000 msvcp_win.dll
-7FFF30C10000 ucrtbase.dll
-7FFF31660000 advapi32.dll
-7FFF326C0000 msvcrt.dll
-7FFF31D90000 sechost.dll
-7FFF30D30000 bcrypt.dll
-7FFF30FE0000 RPCRT4.dll
-7FFF2FE30000 CRYPTBASE.DLL
-7FFF30B90000 bcryptPrimitives.dll
diff --git a/module/alias/instance_of/src/typing/implements_lib.rs b/module/alias/instance_of/src/typing/implements_lib.rs
index 4b7067310e..98ac9b7d4f 100644
--- a/module/alias/instance_of/src/typing/implements_lib.rs
+++ b/module/alias/instance_of/src/typing/implements_lib.rs
@@ -88,8 +88,10 @@ pub mod orphan
 }
 
 /// Exposed namespace of the module.
+#[ allow( unused_imports ) ]
 pub mod exposed
 {
+  use super::*;
   #[ doc( inline ) ]
   #[ allow( unused_imports ) ]
   pub use super::prelude::*;
diff --git a/module/alias/instance_of/src/typing/inspect_type_lib.rs b/module/alias/instance_of/src/typing/inspect_type_lib.rs
index 26cb2b6a24..f5a5d1ae3c 100644
--- a/module/alias/instance_of/src/typing/inspect_type_lib.rs
+++ b/module/alias/instance_of/src/typing/inspect_type_lib.rs
@@ -87,8 +87,10 @@ pub mod orphan
 }
 
 /// Exposed namespace of the module.
+#[ allow( unused_imports ) ]
 pub mod exposed
 {
+  use super::*;
   #[ doc( inline ) ]
   #[ allow( unused_imports ) ]
   pub use super::prelude::*;
diff --git a/module/alias/instance_of/src/typing/is_slice_lib.rs b/module/alias/instance_of/src/typing/is_slice_lib.rs
index a65f9f68c8..ba8686e2ba 100644
--- a/module/alias/instance_of/src/typing/is_slice_lib.rs
+++ b/module/alias/instance_of/src/typing/is_slice_lib.rs
@@ -92,8 +92,10 @@ pub mod orphan
 }
 
 /// Exposed namespace of the module.
+#[ allow( unused_imports ) ]
 pub mod exposed
 {
+  use super::*;
   #[ doc( inline ) ]
   #[ allow( unused_imports ) ]
   pub use super::prelude::*;
diff --git a/module/alias/instance_of/src/typing/typing.rs b/module/alias/instance_of/src/typing/typing.rs
index 312d1bf158..29f3d6397b 100644
--- a/module/alias/instance_of/src/typing/typing.rs
+++ b/module/alias/instance_of/src/typing/typing.rs
@@ -29,8 +29,10 @@ pub mod orphan
 }
 
 /// Exposed namespace of the module.
+#[ allow( unused_imports ) ]
 pub mod exposed
 {
+  use super::*;
   #[ doc( inline ) ]
   #[ allow( unused_imports ) ]
   pub use super::prelude::*;
diff --git a/module/alias/werror/Cargo.toml b/module/alias/werror/Cargo.toml
index 31884116ec..ca345c91c3 100644
--- a/module/alias/werror/Cargo.toml
+++ b/module/alias/werror/Cargo.toml
@@ -29,23 +29,23 @@ all-features = false
 [features]
 default = [
   "enabled",
-  "error_for_lib",
-  "error_for_app"
+  "error_typed",
+  "error_untyped"
 ]
 full = [
   "enabled",
-  "error_for_lib",
-  "error_for_app"
+  "error_typed",
+  "error_untyped"
 ]
 no_std = [ "error_tools/no_std" ]
 use_alloc = [ "error_tools/use_alloc" ]
 enabled = [ "error_tools/enabled" ]
 
-error_for_lib = [
-  "error_tools/error_for_lib"
+error_typed = [
+  "error_tools/error_typed"
 ]
-error_for_app = [
-  "error_tools/error_for_app"
+error_untyped = [
+  "error_tools/error_untyped"
 ]
 
 [dependencies]
diff --git a/module/alias/winterval/Cargo.toml b/module/alias/winterval/Cargo.toml
index 385471c227..8b523e9388 100644
--- a/module/alias/winterval/Cargo.toml
+++ b/module/alias/winterval/Cargo.toml
@@ -24,7 +24,7 @@ workspace = true
 features = [ "full" ]
 all-features = false
 
-# exclude = [ "/tests", "/examples", "-*" ]
+
 
 [features]
 default = [ "enabled" ]
diff --git a/module/alias/wtest/Cargo.toml b/module/alias/wtest/Cargo.toml
index 4cb3aad3a8..a3b92484b8 100644
--- a/module/alias/wtest/Cargo.toml
+++ b/module/alias/wtest/Cargo.toml
@@ -23,7 +23,7 @@ workspace = true
 [package.metadata.docs.rs]
 features = [ "full" ]
 all-features = false
-# exclude = [ "/tests", "/examples", "-*" ]
+
 include = [
   "/rust/impl/test",
   "/Cargo.toml",
diff --git a/module/alias/wtest_basic/src/_blank/standard_lib.rs b/module/alias/wtest_basic/src/_blank/standard_lib.rs
index bd56ee14ed..52f572cffe 100644
--- a/module/alias/wtest_basic/src/_blank/standard_lib.rs
+++ b/module/alias/wtest_basic/src/_blank/standard_lib.rs
@@ -42,8 +42,10 @@ pub mod orphan
 }
 
 /// Exposed namespace of the module.
+#[ allow( unused_imports ) ]
 pub mod exposed
 {
+  use super::*;
 }
 
 // #[ doc( inline ) ]
diff --git a/module/blank/willbe_old/Cargo.toml b/module/blank/willbe_old/Cargo.toml
deleted file mode 100644
index 56716163d5..0000000000
--- a/module/blank/willbe_old/Cargo.toml
+++ /dev/null
@@ -1,80 +0,0 @@
-[package]
-name = "willbe_old"
-version = "0.1.0"
-edition = "2021"
-authors = [
-  "Kostiantyn Wandalen <wandalen@obox.systems>",
-  "Dmytro Kryvoruchko <dmytro.kr@obox.systems>",
-]
-license = "MIT"
-readme = "Readme.md"
-documentation = "https://docs.rs/willbe"
-repository = "https://github.com/Wandalen/wTools/tree/master/module/core/willbe_old"
-homepage = "https://github.com/Wandalen/wTools/tree/master/module/core/willbe_old"
-description = """
-___
-"""
-categories = [ "algorithms", "development-tools" ]
-keywords = [ "fundamental", "general-purpose" ]
-publish = false
-
-[lints]
-workspace = true
-
-[package.metadata.docs.rs]
-features = [ "full" ]
-all-features = false
-# exclude = [ "/tests", "/examples", "-*" ]
-include = [
-  "/rust/impl/willbe_old",
-  "/Cargo.toml",
-  "/Readme.md",
-  "/License",
-]
-
-[features]
-default = [ "enabled" ]
-full = [ "enabled" ]
-no_std = []
-use_alloc = [ "no_std" ]
-enabled = []
-
-[lib]
-name = "willbe_old"
-path = "src/willbe_old/willbe_lib.rs"
-
-[[bin]]
-name = "willbe_old"
-path = "src/willbe_old/willbe_entry.rs"
-
-[[test]]
-name = "willbe_test"
-path = "tests/willbe_old/willbe_test.rs"
-
-# disable for now
-# [[test]]
-# name = "willbe_smoke_test"
-# path = "tests/_integration_test/smoke_test.rs"
-#
-# [[example]]
-# name = "willbe_trivial"
-# path = "examples/willbe_trivial/src/main.rs"
-
-[dependencies]
-wtools = { workspace = true }
-wca = { workspace = true }
-mod_interface = { workspace = true, features = [ "default" ] }
-iter_tools = { workspace = true, features = [ "default" ] }
-error_tools = { workspace = true, features = [ "default" ] }
-toml = "0.5"
-globwalk = "0.8"
-cargo_metadata = "0.15"
-path-absolutize = "3"
-petgraph = "~0.6"
-rand = "0.8.4"
-
-[dev-dependencies]
-test_tools = { workspace = true }
-tempfile = "3"
-assert_cmd = "2.0"
-predicates = "2.1"
diff --git a/module/blank/willbe_old/License b/module/blank/willbe_old/License
deleted file mode 100644
index 6d5ef8559f..0000000000
--- a/module/blank/willbe_old/License
+++ /dev/null
@@ -1,22 +0,0 @@
-Copyright Kostiantyn W and Out of the Box Systems (c) 2013-2024
-
-Permission is hereby granted, free of charge, to any person
-obtaining a copy of this software and associated documentation
-files (the "Software"), to deal in the Software without
-restriction, including without limitation the rights to use,
-copy, modify, merge, publish, distribute, sublicense, and/or sell
-copies of the Software, and to permit persons to whom the
-Software is furnished to do so, subject to the following
-conditions:
-
-The above copyright notice and this permission notice shall be
-included in all copies or substantial portions of the Software.
-
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
-EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
-OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
-NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
-HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
-WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
-FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
-OTHER DEALINGS IN THE SOFTWARE.
diff --git a/module/blank/willbe_old/Readme.md b/module/blank/willbe_old/Readme.md
deleted file mode 100644
index 7028ba383c..0000000000
--- a/module/blank/willbe_old/Readme.md
+++ /dev/null
@@ -1,35 +0,0 @@
-<!-- {{# generate.module_header{} #}} -->
-
-# Module :: willbe
-<!--{ generate.module_header.start() }-->
- [![experimental](https://raster.shields.io/static/v1?label=&message=experimental&color=orange)](https://github.com/emersion/stability-badges#experimental) [![rust-status](https://github.com/Wandalen/wTools/actions/workflows/module_willbe_old_push.yml/badge.svg)](https://github.com/Wandalen/wTools/actions/workflows/module_willbe_old_push.yml) [![docs.rs](https://img.shields.io/docsrs/willbe_old?color=e3e8f0&logo=docs.rs)](https://docs.rs/willbe_old) [![discord](https://img.shields.io/discord/872391416519737405?color=eee&logo=discord&logoColor=eee&label=ask)](https://discord.gg/m3YfbXpUUY)
-<!--{ generate.module_header.end }-->
-
-___
-
-### Basic use-case
-
-<!-- {{# generate.module{} #}} -->
-
-```rust
-use willbe_old::*;
-
-fn main()
-{
-}
-```
-
-### To add to your project
-
-```bash
-cargo add willbe
-```
-
-### Try out from the repository
-
-``` shell test
-git clone https://github.com/Wandalen/wTools
-cd wTools
-cd examples/willbe_trivial
-cargo run
-```
diff --git a/module/blank/willbe_old/src/willbe_old/commands/each.rs b/module/blank/willbe_old/src/willbe_old/commands/each.rs
deleted file mode 100644
index 21a81accae..0000000000
--- a/module/blank/willbe_old/src/willbe_old/commands/each.rs
+++ /dev/null
@@ -1,119 +0,0 @@
-/// Internal namespace.
-pub( crate ) mod private
-{
-  use std::{ env, rc::Rc, cell::RefCell, };
-  use wca::
-  {
-    Args, Props,
-    Context,
-  };
-  use error_tools::{ Result, BasicError };
-
-  use crate::protected::*;
-  use crate::commands::{ StartPointStack, EndPointStack };
-
-  #[ derive( Clone ) ]
-  struct PackagesIterator
-  (
-    Rc< RefCell< dyn Iterator< Item = Package > > >
-  );
-
-  impl< I > From< I > for PackagesIterator
-  where
-    I : Iterator< Item = Package > + 'static
-  {
-    fn from( iter : I ) -> Self
-    {
-      Self( Rc::new( RefCell::new( iter ) ) )
-    }
-  }
-
-  impl PackagesIterator
-  {
-    fn next( &self ) -> Option< Package >
-    {
-      self.0.borrow_mut().next()
-    }
-  }
-
-  /// Each command declaration
-  pub fn each_command() -> wca::Command
-  {
-    wca::Command::former()
-    .hint( "Iterate over packages" )
-    .long_hint( "Iterates over all packages from current directory" )
-    .phrase( "each" )
-    .form()
-  }
-
-  ///
-  /// Iterate over packages
-  ///
-
-  pub fn each( _ : ( Args, Props ), mut ctx : Context ) -> Result< () >
-  {
-    println!( "[LOG] Called each command" );
-
-    // Already iterate
-    if let Some( iter ) = ctx.get_mut::< PackagesIterator >()
-    {
-      // It isn't end of iterator
-      let is_current_package_exists = ctx.get_ref::< Option< Package > >().and_then( | p | p.as_ref() ).is_some();
-      let next_package = iter.next();
-      if is_current_package_exists && next_package.is_some()
-      {
-        ctx.insert( next_package );
-      }
-      else
-      {
-        ctx.remove::< Option< Package > >();
-        ctx.remove::< PackagesIterator >();
-        // At the end of each - go to first endpoint
-        // remove self from startpoints
-        ctx.get_mut::< StartPointStack >().and_then( | sp | sp.pop() );
-        // go to endpoint
-        let prog_state = ctx.get_mut::< wca::RuntimeState >()
-        .ok_or_else( || BasicError::new( "Have no Program State" ) )?;
-
-        ctx.get_mut::< EndPointStack >()
-        .and_then( | ep | ep.pop() )
-        .map( | point | prog_state.pos = point )
-        //? What is better - panic or go to the end of the program when endpoints doesn't exists for any reason
-        .unwrap_or_else( || prog_state.pos = usize::MAX );
-      }
-    }
-    else
-    {
-      // Begin iteration
-      let current_path = env::current_dir().unwrap();
-      let mut packages_iter = packages_iterate( current_path );
-
-      let package = packages_iter.next();
-
-      // But anyway program must found the end of `.each`
-      if package.is_none()
-      {
-        println!( "Any package was found at current directory" );
-      }
-
-      // Add current package and the iterator to context
-      ctx.insert( package );
-      ctx.insert::< PackagesIterator >( packages_iter.into() );
-
-      // Start point to previous instruction( back to current )
-      let prog_state = ctx.get_ref::< wca::RuntimeState >()
-      .ok_or_else( || BasicError::new( "Have no Program State" ) )?;
-      ctx.get_or_default::< StartPointStack >().push( prog_state.pos - 1 );
-    }
-
-    Ok( () )
-  }
-}
-
-//
-
-crate::mod_interface!
-{
-  prelude use each_command;
-  prelude use each;
-}
diff --git a/module/blank/willbe_old/src/willbe_old/commands/end.rs b/module/blank/willbe_old/src/willbe_old/commands/end.rs
deleted file mode 100644
index b7931a06dd..0000000000
--- a/module/blank/willbe_old/src/willbe_old/commands/end.rs
+++ /dev/null
@@ -1,61 +0,0 @@
-/// Internal namespace.
-pub( crate ) mod private
-{
-  use wca::
-  {
-    Args, Props,
-    Context,
-  };
-  use error_tools::{ Result, BasicError };
-
-  use crate::commands::{ StartPointStack, EndPointStack };
-
-  // ! TODO: Remove this command somehow
-
-  /// End command declaration
-  pub fn end_command() -> wca::Command
-  {
-    wca::Command::former()
-    .hint( "Command that is end of a block or a program" )
-    .phrase( "end" )
-    .form()
-  }
-
-  ///
-  /// End of loop/program
-  ///
-
-  pub fn end( _ : ( Args, Props ), ctx : Context ) -> Result< () >
-  {
-    println!( "[LOG] end called" );
-
-    if let Some( startpoints ) = ctx.get_ref::< StartPointStack >()
-    {
-      if let Some( point ) = startpoints.last()
-      {
-        let prog_state = ctx.get_mut::< wca::RuntimeState >()
-        .ok_or_else( || BasicError::new( "Have no Program State" ) )?;
-
-        let endpoints = ctx.get_or_default::< EndPointStack >();
-        // if has no point at current instruction - push it
-        if endpoints.last() != Some( &( prog_state.pos - 1 ) )
-        {
-          endpoints.push( prog_state.pos - 1 );
-        }
-         
-        // Go to start point
-        prog_state.pos = *point;
-      }
-    }
-
-    Ok( () )
-  }
-}
-
-//
-
-crate::mod_interface!
-{
-  prelude use end_command;
-  prelude use end;
-}
diff --git a/module/blank/willbe_old/src/willbe_old/commands/init.rs b/module/blank/willbe_old/src/willbe_old/commands/init.rs
deleted file mode 100644
index ddfa273b42..0000000000
--- a/module/blank/willbe_old/src/willbe_old/commands/init.rs
+++ /dev/null
@@ -1,43 +0,0 @@
-/// Internal namespace.
-pub( crate ) mod private
-{
-  use crate::commands;
-
-  ///
-  /// Form CA commands grammar.
-  ///
-
-  pub fn grammar_form() -> Vec< wca::Command >
-  {
-    vec!
-    [
-      commands::each::each_command(),
-      commands::package::info::info_command(),
-      commands::package::publish::publish_command(),
-      commands::end::end_command(),
-    ]
-  }
-
-  ///
-  /// Form CA commands executor.
-  ///
-
-  pub fn executor_form() -> std::collections::HashMap< String, wca::Routine >
-  {
-    std::collections::HashMap::from(
-    [
-      ( "each".to_owned(), wca::Routine::new_with_ctx( commands::each::each ) ),
-      ( "crate.info".to_owned(), wca::Routine::new_with_ctx( commands::package::info::info ) ),
-      ( "crate.publish".to_owned(), wca::Routine::new_with_ctx( commands::package::publish::publish ) ),
-      ( "end".to_owned(), wca::Routine::new_with_ctx( commands::end::end ) ),
-    ])
-  }
-}
-
-//
-
-crate::mod_interface!
-{
-  prelude use grammar_form;
-  prelude use executor_form;
-}
diff --git a/module/blank/willbe_old/src/willbe_old/commands/mod.rs b/module/blank/willbe_old/src/willbe_old/commands/mod.rs
deleted file mode 100644
index 5f0d00ec1c..0000000000
--- a/module/blank/willbe_old/src/willbe_old/commands/mod.rs
+++ /dev/null
@@ -1,66 +0,0 @@
-crate::mod_interface!
-{
-  /// Init aggregator commands.
-  prelude mod init;
-
-  /// Works with crates
-  prelude mod package;
-
-  /// Iterate over subject
-  prelude mod each;
-
-  /// End of loop/program
-  prelude mod end;
-
-  protected use super::init::protected::*;
-
-  protected use super::private::StartPointStack;
-  protected use super::private::EndPointStack;
-}
-
-mod private
-{
-  /// Allow to go back to the iterator
-  #[ derive( Debug, Default, Clone ) ]
-  pub struct StartPointStack( Vec< usize > );
-
-  impl std::ops::Deref for StartPointStack
-  {
-    type Target = Vec< usize >;
-
-    fn deref( &self ) -> &Self::Target
-    {
-      &self.0
-    }
-  }
-
-  impl std::ops::DerefMut for StartPointStack
-  {
-    fn deref_mut( &mut self ) -> &mut Self::Target
-    {
-      &mut self.0
-    }
-  }
-
-  /// Allow to go back to the end
-  #[ derive( Debug, Default, Clone ) ]
-  pub struct EndPointStack( Vec< usize > );
-
-  impl std::ops::Deref for EndPointStack
-  {
-    type Target = Vec< usize >;
-
-    fn deref( &self ) -> &Self::Target
-    {
-      &self.0
-    }
-  }
-
-  impl std::ops::DerefMut for EndPointStack
-  {
-    fn deref_mut( &mut self ) -> &mut Self::Target
-    {
-      &mut self.0
-    }
-  }
-}
diff --git a/module/blank/willbe_old/src/willbe_old/commands/package/info.rs b/module/blank/willbe_old/src/willbe_old/commands/package/info.rs
deleted file mode 100644
index 30121caf50..0000000000
--- a/module/blank/willbe_old/src/willbe_old/commands/package/info.rs
+++ /dev/null
@@ -1,80 +0,0 @@
-/// Internal namespace.
-pub( crate ) mod private
-{
-  use crate::protected::*;
-  use std::env;
-  use wca::
-  {
-    Args, Props,
-    Context,
-  };
-  use error_tools::{ Result, for_app::format_err };
-
-  /// Info command declaration
-  pub fn info_command() -> wca::Command
-  {
-    wca::Command::former()
-    .hint( "Prints information about package" )
-    .long_hint( "Prints information about package at current directory" )
-    .phrase( "crate.info" )
-    .form()
-  }
-
-  ///
-  /// Prints information about package
-  ///
-
-  pub fn info( _ : ( Args, Props ), ctx : Context ) -> Result< () >
-  {
-    println!( "[LOG] Called info command" );
-
-    // Get package from context or try to read package at current directory
-    let package = match ctx.get_ref::< Option< Package > >()
-    {
-      Some( Some( package ) ) => package.to_owned(),
-      None =>
-      {
-        let path = env::current_dir().unwrap().to_owned();
-        Package::try_from( path )
-        .map_err( | _ | format_err!( "Package not found at current directory" ) )?
-      }
-      _ => return Ok( () )
-    };
-
-    let info = PackageMetadata::try_from( package )
-    .map_err( | _ | format_err!( "Can not parse package metadata" ) )?;
-    let info = info.all().to_owned();
-
-    println!
-    (
-      r#"
-Name: "{}"
-Version: "{}"
-Description: "{}"
-Documentation: "{}"
-License: "{}"
-Readme: "{}"
-Dependencies: {:?}
-Location: "{}"
-      "#,
-      info.name,
-      info.version,
-      info.description.unwrap_or_else( || "Not found".to_string() ),
-      info.documentation.unwrap_or_else( || "Not found".to_string() ),
-      info.license.unwrap_or_else( || "Not found".to_string() ),
-      info.readme.map( String::from ).unwrap_or_else( || "Not found".to_string() ),
-      info.dependencies.iter().map( | d | &d.name ).collect::< Vec< _ > >(),
-      info.manifest_path.parent().unwrap()
-    );
-
-    Ok( () )
-  }
-}
-
-//
-
-crate::mod_interface!
-{
-  prelude use info_command;
-  prelude use info;
-}
diff --git a/module/blank/willbe_old/src/willbe_old/commands/package/mod.rs b/module/blank/willbe_old/src/willbe_old/commands/package/mod.rs
deleted file mode 100644
index 777f955a8c..0000000000
--- a/module/blank/willbe_old/src/willbe_old/commands/package/mod.rs
+++ /dev/null
@@ -1,8 +0,0 @@
-crate::mod_interface!
-{
-  /// Information about package
-  prelude mod info;
-
-  /// Publish package
-  prelude mod publish;
-}
diff --git a/module/blank/willbe_old/src/willbe_old/commands/package/publish.rs b/module/blank/willbe_old/src/willbe_old/commands/package/publish.rs
deleted file mode 100644
index 622f34bbfb..0000000000
--- a/module/blank/willbe_old/src/willbe_old/commands/package/publish.rs
+++ /dev/null
@@ -1,66 +0,0 @@
-/// Internal namespace.
-pub( crate ) mod private
-{
-  use crate::protected::*;
-  use std::env;
-  use wca::
-  {
-    Args, Props,
-    Context,
-  };
-  use error_tools::{ Result, for_app::format_err };
-
-  /// Publish command declaration
-  pub fn publish_command() -> wca::Command
-  {
-    wca::Command::former()
-    .hint( "Publish a package" )
-    .long_hint( "Validate, runs tests and publish a package" )
-    .phrase( "crate.publish" )
-    .form()
-  }
-
-  ///
-  /// Verify and publish a package
-  ///
-
-  pub fn publish( _ : ( Args, Props ), ctx : Context ) -> Result< () >
-  {
-    println!( "[LOG] Called publish command" );
-
-    // Get package from context or try to read package at current directory
-    let package = match ctx.get_ref::< Option< Package > >()
-    {
-      Some( Some( package ) ) => package.to_owned(),
-      None =>
-      {
-        let path = env::current_dir().unwrap().to_owned();
-        Package::try_from( path )
-        .map_err( | _ | format_err!( "Package not found at current directory" ) )?
-      }
-      _ => return Ok( () )
-    };
-
-    let info = PackageMetadata::try_from( package )
-    .map_err( | _ | format_err!( "Can not parse package metadata" ) )?;
-
-    println!
-    (
-      "=== Verification ===\nLicense: {}\nReadme: {}\nDocumentation: {}\nTests: {}",
-      if info.has_license() { "Yes" } else { "No" },
-      if info.has_readme() { "Yes" } else { "No" },
-      if info.has_documentation() { "Yes" } else { "No" },
-      if info.is_tests_passed() { "Passed" } else { "Failed" }
-    );
-
-    Ok( () )
-  }
-}
-
-//
-
-crate::mod_interface!
-{
-  prelude use publish_command;
-  prelude use publish;
-}
diff --git a/module/blank/willbe_old/src/willbe_old/core/entities/mod.rs b/module/blank/willbe_old/src/willbe_old/core/entities/mod.rs
deleted file mode 100644
index 768053c884..0000000000
--- a/module/blank/willbe_old/src/willbe_old/core/entities/mod.rs
+++ /dev/null
@@ -1,10 +0,0 @@
-
-crate::mod_interface!
-{
-  /// Package
-  layer package;
-  /// Workspace
-  layer workspace;
-  /// Auxiliary entities
-  layer utility;
-}
diff --git a/module/blank/willbe_old/src/willbe_old/core/entities/package/metadata.rs b/module/blank/willbe_old/src/willbe_old/core/entities/package/metadata.rs
deleted file mode 100644
index 3ba8640877..0000000000
--- a/module/blank/willbe_old/src/willbe_old/core/entities/package/metadata.rs
+++ /dev/null
@@ -1,119 +0,0 @@
-/// Internal namespace.
-pub( crate ) mod private
-{
-  use std::path::PathBuf;
-
-  use cargo_metadata::MetadataCommand;
-
-  use error_tools::{ BasicError, err };
-
-  use crate::Package;
-
-  /// Package metadata
-  #[ derive( Debug ) ]
-  pub struct PackageMetadata
-  {
-    package : Package,
-    metadata : cargo_metadata::Package,
-  }
-
-  impl TryFrom< PathBuf > for PackageMetadata
-  {
-    type Error = BasicError;
-
-    fn try_from( value : PathBuf ) -> Result< Self, Self::Error >
-    {
-      let package = Package::try_from( value )?;
-      package.try_into()
-    }
-  }
-
-  impl TryFrom< Package > for PackageMetadata
-  {
-    type Error = BasicError;
-
-    fn try_from( value : Package ) -> Result< Self, Self::Error >
-    {
-      let path = value.path().join( "Cargo.toml" );
-      let meta = MetadataCommand::new()
-      .manifest_path( &path )
-      .no_deps()
-      .exec()
-      .map_err( | _ | err!( "Can not read metadata" ) )?;
-
-      let metadata = meta.packages.iter()
-      .find( | p | p.manifest_path == path )
-      .ok_or_else( || err!( "Can not parse metadata for current package" ) )?
-      .to_owned();
-      Ok( Self
-      {
-        package : value,
-        metadata
-      })
-    }
-  }
-  impl PackageMetadata
-  {
-    /// Returns name
-    pub fn name( &self ) -> &String
-    {
-      &self.metadata.name
-    }
-
-    /// Returns version
-    pub fn version( &self ) -> String
-    {
-      self.metadata.version.to_string()
-    }
-  }
-
-  impl PackageMetadata
-  {
-    /// Returns license from `Cargo.toml`
-    pub fn license( &self ) -> Option< String >
-    {
-      self.metadata.license.to_owned()
-    }
-
-    /// Returns path to license file if exists
-    pub fn license_file( &self ) -> Option< PathBuf >
-    {
-      self.metadata.license_file.as_ref().map( | r | r.to_owned().into_std_path_buf() )
-    }
-
-    /// Returns path to Readme file
-    pub fn readme( &self ) -> Option< PathBuf >
-    {
-      self.metadata.readme.as_ref().map( | r | r.to_owned().into_std_path_buf() )
-    }
-
-    /// Returns url to documentation if it is exists
-    pub fn documentation( &self ) -> Option< String  >
-    {
-      self.metadata.documentation.to_owned()
-    }
-  }
-
-  impl PackageMetadata
-  {
-    /// Returns reference to Package
-    pub fn as_package( &self ) -> &Package
-    {
-      &self.package
-    }
-
-    /// Returns all metadata
-    pub fn all( &self ) -> &cargo_metadata::Package
-    {
-      &self.metadata
-    }
-  }
-
-}
-
-//
-
-crate::mod_interface!
-{
-  prelude use PackageMetadata;
-}
diff --git a/module/blank/willbe_old/src/willbe_old/core/entities/package/mod.rs b/module/blank/willbe_old/src/willbe_old/core/entities/package/mod.rs
deleted file mode 100644
index 62bf81332d..0000000000
--- a/module/blank/willbe_old/src/willbe_old/core/entities/package/mod.rs
+++ /dev/null
@@ -1,10 +0,0 @@
-
-crate::mod_interface!
-{
-  /// Package
-  layer package;
-  /// Metadata
-  layer metadata;
-  /// Verification methods
-  layer verification;
-}
diff --git a/module/blank/willbe_old/src/willbe_old/core/entities/package/package.rs b/module/blank/willbe_old/src/willbe_old/core/entities/package/package.rs
deleted file mode 100644
index a455cd1cc1..0000000000
--- a/module/blank/willbe_old/src/willbe_old/core/entities/package/package.rs
+++ /dev/null
@@ -1,53 +0,0 @@
-/// Internal namespace.
-pub( crate ) mod private
-{
-  use std::path::PathBuf;
-  use toml::Value;
-
-  use error_tools::{ BasicError, err };
-
-  /// Package
-  #[ derive( Debug, Clone ) ]
-  pub struct Package
-  {
-    path : PathBuf,
-  }
-
-  impl TryFrom< PathBuf > for Package
-  {
-    type Error = BasicError;
-
-    fn try_from( path : PathBuf ) -> Result< Self, Self::Error >
-    {
-      let config_str = std::fs::read_to_string( path.join( "Cargo.toml" ) )
-      .map_err( | _ | err!( "Can not read \"Cargo.toml\"" ) )?;
-      let toml = config_str.parse::< Value >()
-      .map_err( | _ | err!( "Can not parse \"Cargo.toml\"" ) )?;
-
-      if toml.get( "package" ).is_some()
-      {
-        Ok( Self{ path } )
-      }
-      else
-      {
-        Err( err!( "\"package\" into \"Cargo.toml\" not found" ) )
-      }
-    }
-  }
-
-  impl Package
-  {
-    /// Gets path of package
-    pub fn path( &self ) -> &PathBuf
-    {
-      &self.path
-    }
-  }
-}
-
-//
-
-crate::mod_interface!
-{
-  prelude use Package;
-}
diff --git a/module/blank/willbe_old/src/willbe_old/core/entities/package/verification.rs b/module/blank/willbe_old/src/willbe_old/core/entities/package/verification.rs
deleted file mode 100644
index 0098940074..0000000000
--- a/module/blank/willbe_old/src/willbe_old/core/entities/package/verification.rs
+++ /dev/null
@@ -1,65 +0,0 @@
-/// Internal namespace.
-pub( crate ) mod private
-{
-  use std::process::Command;
-
-  use crate::PackageMetadata;
-
-  /// All package verification methods
-  pub trait Verification
-  {
-    /// Do all checks
-    fn check_all( &self ) -> bool
-    {
-      self.has_readme()
-      && self.has_documentation()
-      && self.has_license()
-      && self.is_tests_passed()
-    }
-    /// Check if readme exists
-    fn has_readme( &self ) -> bool;
-    /// Check if documentation exists
-    fn has_documentation( &self ) -> bool;
-    /// Check if the package has a license
-    fn has_license( &self ) -> bool;
-    /// Check if all tests is passed
-    fn is_tests_passed( &self ) -> bool;
-  }
-
-  impl Verification for PackageMetadata
-  {
-    fn has_readme( &self ) -> bool
-    {
-      self.readme().is_some()
-    }
-
-    fn has_documentation( &self ) -> bool
-    {
-      self.documentation().is_some()
-    }
-
-    fn has_license( &self ) -> bool
-    {
-      self.license().is_some()
-      ||
-      self.license_file().is_some()
-    }
-
-    fn is_tests_passed( &self ) -> bool
-    {
-      let tests_output = Command::new( "cargo" )
-      .current_dir( self.as_package().path() )
-      .args([ "test" ])
-      .output().unwrap();
-
-      tests_output.status.success()
-    }
-  }
-}
-
-//
-
-crate::mod_interface!
-{
-  prelude use Verification;
-}
diff --git a/module/blank/willbe_old/src/willbe_old/core/entities/utility.rs b/module/blank/willbe_old/src/willbe_old/core/entities/utility.rs
deleted file mode 100644
index 3968aad1af..0000000000
--- a/module/blank/willbe_old/src/willbe_old/core/entities/utility.rs
+++ /dev/null
@@ -1,124 +0,0 @@
-/// Internal namespace.
-pub( crate ) mod private
-{
-  use crate::{ Package, PackageMetadata };
-  use iter_tools::prelude::*;
-
-  /// Represent with which order strategy to iterate over packages
-  #[ derive( Debug, Clone, Copy ) ]
-  pub enum OrderStrategy
-  {
-    /// Alphabetical by package name
-    Alphabetical,
-    /// Based on their dependencies
-    Topological,
-    /// Shuffle packages
-    Random,
-  }
-
-  /// This trait defines a method to sort packages by selected order strategy
-  pub trait Ordered : Iterator
-  where
-    Vec< Package > : FromIterator< < Self as Iterator >::Item >
-  {
-    /// Collect all iterator elements into a sorted vector
-    fn ordered( self, order : OrderStrategy ) -> Vec< Package >
-    where
-      Self : Sized
-    {
-      let v : Vec< Package > = self.collect();
-
-      match order
-      {
-        OrderStrategy::Alphabetical => alphabetical( v ),
-        OrderStrategy::Topological => toposort( v ),
-        OrderStrategy::Random => shuffle( v ),
-      }
-    }
-
-    /// Returns iterator over sorted Packages
-    fn ordered_iter( self, order : OrderStrategy ) -> Box< dyn Iterator< Item = Package > >
-    where
-      Self : Sized
-    {
-      Box::new( self.ordered( order ).into_iter() )
-    }
-  }
-
-  fn alphabetical( packages : Vec< Package > ) -> Vec< Package >
-  {
-    packages.iter().cloned()
-    .filter_map( | p |
-    {
-      PackageMetadata::try_from( p ).ok()
-    })
-
-    .sorted_by_key( | meta | meta.name().to_owned() )
-
-    .map( | meta | meta.as_package().to_owned() )
-    .collect_vec()
-  }
-
-  fn toposort( packages : Vec< Package > ) -> Vec< Package >
-  {
-    use petgraph::Graph;
-    use cargo_metadata::DependencyKind;
-    use std::collections::HashMap;
-
-    let ( deps, package_map ) = packages.iter()
-    .filter_map( | p | PackageMetadata::try_from( p.to_owned() ).ok() )
-    .fold( ( Graph::new(), HashMap::new() ), | ( mut deps, mut packages ), meta |
-    {
-      packages.insert( meta.name().to_owned(), meta.as_package().to_owned() );
-
-      let root_node = if let Some( node ) = deps.node_indices().find( | i | deps[ *i ] == meta.name().to_owned() )
-      { node }
-      else
-      { deps.add_node( meta.name().to_owned() ) };
-
-      for dep in &meta.all().dependencies
-      {
-        if dep.path.is_some() && dep.kind != DependencyKind::Development
-        {
-          let dep_node = if let Some( node ) = deps.node_indices().find( | i | deps[ *i ] == dep.name )
-          { node }
-          else
-          { deps.add_node( dep.name.to_owned() ) };
-
-          deps.add_edge( root_node, dep_node, () );
-        }
-      }
-
-      ( deps, packages )
-    });
-
-    let sorted = petgraph::algo::toposort( &deps, None ).unwrap();
-    sorted.iter()
-    .rev()
-    .map( | &dep_idx | deps.node_weight( dep_idx ).unwrap().to_owned() )
-    .filter_map( | name | package_map.get( &name ) )
-    .cloned().collect::< Vec< Package > >()
-  }
-
-  fn shuffle( mut packages : Vec< Package > ) -> Vec< Package >
-  {
-    use rand::seq::SliceRandom;
-
-    let mut rng = rand::thread_rng();
-    packages.shuffle( &mut rng );
-
-    packages
-  }
-
-
-  impl< T : ?Sized > Ordered for T
-  where T : Iterator, Vec< Package >: FromIterator< < T as Iterator >::Item > {}
-}
-
-//
-
-crate::mod_interface!
-{
-  prelude use OrderStrategy;
-  prelude use Ordered;
-}
diff --git a/module/blank/willbe_old/src/willbe_old/core/entities/workspace.rs b/module/blank/willbe_old/src/willbe_old/core/entities/workspace.rs
deleted file mode 100644
index 941f65753b..0000000000
--- a/module/blank/willbe_old/src/willbe_old/core/entities/workspace.rs
+++ /dev/null
@@ -1,95 +0,0 @@
-/// Internal namespace.
-pub( crate ) mod private
-{
-  use std::path::PathBuf;
-  use toml::Value;
-
-  use error_tools::{ BasicError, err };
-
-  use crate::{ Package, unique_walk };
-
-  /// Workspace
-  #[ derive( Debug, Clone ) ]
-  pub struct Workspace
-  {
-    path : PathBuf,
-  }
-
-  impl TryFrom< PathBuf > for Workspace
-  {
-    type Error = BasicError;
-
-    fn try_from( path : PathBuf ) -> Result< Self, Self::Error >
-    {
-      let config_str = std::fs::read_to_string( path.join( "Cargo.toml" ) )
-      .map_err( | _ | err!( "Can not read \"Cargo.toml\"" ) )?;
-      let toml = config_str.parse::< Value >()
-      .map_err( | _ | err!( "Can not parse \"Cargo.toml\"" ) )?;
-
-      if toml.get( "workspace" ).is_some()
-      {
-        Ok( Self{ path } )
-      }
-      else
-      {
-        Err( err!( "\"workspace\" into \"Cargo.toml\" not found" ) )
-      }
-    }
-  }
-
-  impl Workspace
-  {
-    /// Gets list of packages into workspace
-    pub fn packages( &self ) -> Vec< Package >
-    {
-      let config_str = std::fs::read_to_string( self.path.join( "Cargo.toml" ) ).unwrap();
-      let toml = config_str.parse::< Value >().unwrap();
-
-      // iterate over members into workspace
-      toml[ "workspace" ]
-      // members can be doesn't setted
-      .get( "members" )
-      .unwrap_or( &Value::Array( vec![] ) ).as_array()
-      .unwrap_or( &vec![] )
-      .iter()
-      // fold all packages from members
-      .fold( vec![], | mut acc, member |
-      {
-        let packages_paths = unique_walk
-        (
-          self.path.to_owned(),
-          &[ member.as_str().unwrap().to_string() ]
-        );
-
-        packages_paths
-        .fold( &mut acc, | acc, package_path |
-        {
-          if let Ok( package ) = Package::try_from( package_path.to_owned() )
-          {
-            acc.push( package );
-          }
-          // workspaces into workspace
-          else if let Ok( workspace ) = Workspace::try_from( package_path )
-          {
-            acc.extend( workspace.packages() );
-          }
-          acc
-        });
-        acc
-      })
-    }
-
-    /// iterate over packages into workspace
-    pub fn packages_iterate( &self ) -> impl Iterator< Item = Package >
-    {
-      self.packages().into_iter()
-    }
-  }
-}
-
-//
-
-crate::mod_interface!
-{
-  prelude use Workspace;
-}
diff --git a/module/blank/willbe_old/src/willbe_old/core/iterators.rs b/module/blank/willbe_old/src/willbe_old/core/iterators.rs
deleted file mode 100644
index 191d28c61f..0000000000
--- a/module/blank/willbe_old/src/willbe_old/core/iterators.rs
+++ /dev/null
@@ -1,36 +0,0 @@
-/// Internal namespace.
-pub( crate ) mod private
-{
-  use std::path::PathBuf;
-  use crate::*;
-
-  /// Iterate over all packages by PathBuf
-  pub fn packages_iterate( path : PathBuf ) -> Box< dyn Iterator< Item = Package > >
-  {
-    if let Ok( package ) = Package::try_from( path.to_owned() )
-    {
-      return Box::new( Some( package ).into_iter() )
-    }
-
-    if let Ok( workspace ) = Workspace::try_from( path )
-    {
-      return Box::new( workspace.packages_iterate() )
-    }
-
-    Box::new( None.into_iter() )
-  }
-
-  /// Iterate over workspaces iterator
-  pub fn workspaces_packages_iterate( workspaces : impl Iterator< Item = Workspace > ) -> impl Iterator< Item = Package >
-  {
-    workspaces.flat_map( move | workspace | workspace.packages_iterate() )
-  }
-}
-
-//
-
-crate::mod_interface!
-{
-  prelude use packages_iterate;
-  prelude use workspaces_packages_iterate;
-}
diff --git a/module/blank/willbe_old/src/willbe_old/core/mod.rs b/module/blank/willbe_old/src/willbe_old/core/mod.rs
deleted file mode 100644
index 23c69db43e..0000000000
--- a/module/blank/willbe_old/src/willbe_old/core/mod.rs
+++ /dev/null
@@ -1,9 +0,0 @@
-
-crate::mod_interface!
-{
-  /// Entities of the program
-  layer entities;
-
-  /// Iterators over packages
-  layer iterators;
-}
diff --git a/module/blank/willbe_old/src/willbe_old/files.rs b/module/blank/willbe_old/src/willbe_old/files.rs
deleted file mode 100644
index 19e480b1c7..0000000000
--- a/module/blank/willbe_old/src/willbe_old/files.rs
+++ /dev/null
@@ -1,34 +0,0 @@
-/// Internal namespace.
-pub( crate ) mod private
-{
-  use std::path::{ Path, PathBuf };
-
-  use path_absolutize::*;
-
-  use iter_tools::Itertools;
-
-  ///
-  /// Iterate over unique files in directory using globs 
-  ///
-
-  pub fn unique_walk< P, S >( base_dir : P, patterns : &[ S ] ) -> impl Iterator< Item = PathBuf >
-  where
-    P: AsRef< Path >,
-    S: AsRef< str >,
-  {
-    globwalk::GlobWalkerBuilder::from_patterns( base_dir, patterns )
-    .follow_links( true )
-    .build().unwrap()
-    .into_iter()
-    .filter_map( Result::ok )
-    .filter_map( | s | s.path().absolutize().map( | p | p.to_path_buf() ).ok() )
-    .unique()
-  }
-}
-
-//
-
-crate::mod_interface!
-{
-  prelude use unique_walk;
-}
diff --git a/module/blank/willbe_old/src/willbe_old/willbe_entry.rs b/module/blank/willbe_old/src/willbe_old/willbe_entry.rs
deleted file mode 100644
index a3c1823a48..0000000000
--- a/module/blank/willbe_old/src/willbe_old/willbe_entry.rs
+++ /dev/null
@@ -1,34 +0,0 @@
-#![ cfg_attr( feature = "no_std", no_std ) ]
-#![ doc( html_logo_url = "https://raw.githubusercontent.com/Wandalen/wTools/master/asset/img/logo_v3_trans_square.png" ) ]
-#![ doc( html_favicon_url = "https://raw.githubusercontent.com/Wandalen/wTools/alpha/asset/img/logo_v3_trans_square_icon_small_v2.ico" ) ]
-#![ doc( html_root_url = "https://docs.rs/wpublisher/" ) ]
-// #![ deny( rust_2018_idioms ) ]
-// #![ deny( missing_debug_implementations ) ]
-// #![ deny( missing_docs ) ]
-
-//!
-//! ___.
-//!
-
-#![ doc = include_str!( concat!( env!( "CARGO_MANIFEST_DIR" ), "/", "Readme.md" ) ) ]
-
-#[ allow( unused_imports ) ]
-use ::willbe_old::*;
-
-//
-
-#[ cfg( not( feature = "no_std" ) ) ]
-fn main() -> error_tools::Result< () >
-{
-  let args = std::env::args().skip( 1 ).collect::< Vec< String > >();
-
-  let ca = wca::CommandsAggregator::former()
-  .grammar( commands::grammar_form() )
-  .executor( commands::executor_form() )
-  .perform();
-
-  Ok( ca.perform( if args.is_empty() { "".to_owned() } else { args.join( " " ) + " .end" } )? )
-}
-
-#[ cfg( feature = "no_std" ) ]
-fn main() {}
diff --git a/module/blank/willbe_old/src/willbe_old/willbe_lib.rs b/module/blank/willbe_old/src/willbe_old/willbe_lib.rs
deleted file mode 100644
index bfbcd09466..0000000000
--- a/module/blank/willbe_old/src/willbe_old/willbe_lib.rs
+++ /dev/null
@@ -1,36 +0,0 @@
-#![ cfg_attr( feature = "no_std", no_std ) ]
-#![ doc( html_logo_url = "https://raw.githubusercontent.com/Wandalen/wTools/master/asset/img/logo_v3_trans_square.png" ) ]
-#![ doc( html_favicon_url = "https://raw.githubusercontent.com/Wandalen/wTools/alpha/asset/img/logo_v3_trans_square_icon_small_v2.ico" ) ]
-#![ doc( html_root_url = "https://docs.rs/_blank/latest/_blank/" ) ]
-// #![ deny( rust_2018_idioms ) ]
-// #![ deny( missing_debug_implementations ) ]
-// #![ deny( missing_docs ) ]
-
-// #![ feature( type_name_of_val ) ]
-// #![ feature( trace_macros ) ]
-
-//!
-//! ___.
-//!
-
-#![ doc = include_str!( concat!( env!( "CARGO_MANIFEST_DIR" ), "/", "Readme.md" ) ) ]
-
-//
-use mod_interface::mod_interface;
-
-mod_interface!
-{
-  /// Features of Application Programming Interface that 100% should be implemented
-  #[ cfg( not( feature = "no_std" ) ) ]
-  layer core;
-
-  /// Library of utility to work with commands.
-  #[ cfg( not( feature = "no_std" ) ) ]
-  layer commands;
-
-  /// Operate over files.
-  #[ cfg( not( feature = "no_std" ) ) ]
-  layer files;
-
-  protected( crate ) use ::wtools::prelude::*;
-}
diff --git a/module/blank/willbe_old/tests/smoke_test.rs b/module/blank/willbe_old/tests/smoke_test.rs
deleted file mode 100644
index 2678ac06fe..0000000000
--- a/module/blank/willbe_old/tests/smoke_test.rs
+++ /dev/null
@@ -1,15 +0,0 @@
-
-
-#[ test ]
-fn local_smoke_test()
-{
-  ::test_tools::smoke_test_for_local_run();
-}
-
-
-#[ test ]
-#[ ignore ]
-fn published_smoke_test()
-{
-  ::test_tools::smoke_test_for_published_run();
-}
diff --git a/module/blank/willbe_old/tests/willbe_old/_asset/empty/.gitignore b/module/blank/willbe_old/tests/willbe_old/_asset/empty/.gitignore
deleted file mode 100644
index 44c5ea8fa7..0000000000
--- a/module/blank/willbe_old/tests/willbe_old/_asset/empty/.gitignore
+++ /dev/null
@@ -1,4 +0,0 @@
-# Ignore everything in this directory
-*
-# Except this file
-!.gitignore
\ No newline at end of file
diff --git a/module/blank/willbe_old/tests/willbe_old/_asset/package/Cargo.toml b/module/blank/willbe_old/tests/willbe_old/_asset/package/Cargo.toml
deleted file mode 100644
index 7f16e6e19e..0000000000
--- a/module/blank/willbe_old/tests/willbe_old/_asset/package/Cargo.toml
+++ /dev/null
@@ -1,9 +0,0 @@
-[package]
-name = "willbe_verified_package"
-version = "0.1.0"
-edition = "2021"
-documentation = "Documentation text"
-license = "MIT"
-readme = "Readme.md"
-
-[dependencies]
diff --git a/module/blank/willbe_old/tests/willbe_old/_asset/package/License b/module/blank/willbe_old/tests/willbe_old/_asset/package/License
deleted file mode 100644
index e69de29bb2..0000000000
diff --git a/module/blank/willbe_old/tests/willbe_old/_asset/package/Readme.md b/module/blank/willbe_old/tests/willbe_old/_asset/package/Readme.md
deleted file mode 100644
index e69de29bb2..0000000000
diff --git a/module/blank/willbe_old/tests/willbe_old/_asset/package/src/lib.rs b/module/blank/willbe_old/tests/willbe_old/_asset/package/src/lib.rs
deleted file mode 100644
index 1ccf57060e..0000000000
--- a/module/blank/willbe_old/tests/willbe_old/_asset/package/src/lib.rs
+++ /dev/null
@@ -1,15 +0,0 @@
-/// Adds two numbers and returns result
-pub fn add(left: usize, right: usize) -> usize {
-  left + right
-}
-
-#[cfg(test)]
-mod tests {
-  use super::*;
-
-  #[test]
-  fn it_works() {
-    let result = add(2, 2);
-    assert_eq!(result, 4);
-  }
-}
diff --git a/module/blank/willbe_old/tests/willbe_old/_asset/package/src/main.rs b/module/blank/willbe_old/tests/willbe_old/_asset/package/src/main.rs
deleted file mode 100644
index 80a1832bfa..0000000000
--- a/module/blank/willbe_old/tests/willbe_old/_asset/package/src/main.rs
+++ /dev/null
@@ -1,3 +0,0 @@
-fn main() {
-  println!("Hello, world!");
-}
diff --git a/module/blank/willbe_old/tests/willbe_old/_asset/package_no_verified/Cargo.toml b/module/blank/willbe_old/tests/willbe_old/_asset/package_no_verified/Cargo.toml
deleted file mode 100644
index 766bac3bee..0000000000
--- a/module/blank/willbe_old/tests/willbe_old/_asset/package_no_verified/Cargo.toml
+++ /dev/null
@@ -1,8 +0,0 @@
-[package]
-name = "willbe_no_verified_package"
-version = "0.1.0"
-edition = "2021"
-
-# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
-
-[dependencies]
diff --git a/module/blank/willbe_old/tests/willbe_old/_asset/package_no_verified/src/lib.rs b/module/blank/willbe_old/tests/willbe_old/_asset/package_no_verified/src/lib.rs
deleted file mode 100644
index 20cb385493..0000000000
--- a/module/blank/willbe_old/tests/willbe_old/_asset/package_no_verified/src/lib.rs
+++ /dev/null
@@ -1,8 +0,0 @@
-#[cfg(test)]
-mod tests {
-  #[test]
-  fn failed()
-  {
-    assert!( false );
-  }
-}
diff --git a/module/blank/willbe_old/tests/willbe_old/_asset/package_no_verified/src/main.rs b/module/blank/willbe_old/tests/willbe_old/_asset/package_no_verified/src/main.rs
deleted file mode 100644
index 80a1832bfa..0000000000
--- a/module/blank/willbe_old/tests/willbe_old/_asset/package_no_verified/src/main.rs
+++ /dev/null
@@ -1,3 +0,0 @@
-fn main() {
-  println!("Hello, world!");
-}
diff --git a/module/blank/willbe_old/tests/willbe_old/_asset/workspace_with_deps/Cargo.toml b/module/blank/willbe_old/tests/willbe_old/_asset/workspace_with_deps/Cargo.toml
deleted file mode 100644
index ad7fb73a88..0000000000
--- a/module/blank/willbe_old/tests/willbe_old/_asset/workspace_with_deps/Cargo.toml
+++ /dev/null
@@ -1,8 +0,0 @@
-[workspace]
-resolver = "2"
-members = [
-  "module/*",
-]
-exclude = [
-  "*",
-]
diff --git a/module/blank/willbe_old/tests/willbe_old/_asset/workspace_with_deps/module/module1/Cargo.toml b/module/blank/willbe_old/tests/willbe_old/_asset/workspace_with_deps/module/module1/Cargo.toml
deleted file mode 100644
index a183e1b93a..0000000000
--- a/module/blank/willbe_old/tests/willbe_old/_asset/workspace_with_deps/module/module1/Cargo.toml
+++ /dev/null
@@ -1,8 +0,0 @@
-[package]
-name = "willbe_with_deps_module1"
-version = "0.1.0"
-edition = "2021"
-
-# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
-
-[dependencies]
diff --git a/module/blank/willbe_old/tests/willbe_old/_asset/workspace_with_deps/module/module1/src/lib.rs b/module/blank/willbe_old/tests/willbe_old/_asset/workspace_with_deps/module/module1/src/lib.rs
deleted file mode 100644
index 3b9acffd5a..0000000000
--- a/module/blank/willbe_old/tests/willbe_old/_asset/workspace_with_deps/module/module1/src/lib.rs
+++ /dev/null
@@ -1,14 +0,0 @@
-pub fn add(left: usize, right: usize) -> usize {
-  left + right
-}
-
-#[cfg(test)]
-mod tests {
-  use super::*;
-
-  #[test]
-  fn it_works() {
-    let result = add(2, 2);
-    assert_eq!(result, 4);
-  }
-}
diff --git a/module/blank/willbe_old/tests/willbe_old/_asset/workspace_with_deps/module/module2/Cargo.toml b/module/blank/willbe_old/tests/willbe_old/_asset/workspace_with_deps/module/module2/Cargo.toml
deleted file mode 100644
index e362e58a66..0000000000
--- a/module/blank/willbe_old/tests/willbe_old/_asset/workspace_with_deps/module/module2/Cargo.toml
+++ /dev/null
@@ -1,9 +0,0 @@
-[package]
-name = "willbe_with_deps_module2"
-version = "0.1.0"
-edition = "2021"
-
-# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
-
-[dependencies]
-willbe_with_deps_module1 = { version = "*", path = "../module1" }
\ No newline at end of file
diff --git a/module/blank/willbe_old/tests/willbe_old/_asset/workspace_with_deps/module/module2/src/lib.rs b/module/blank/willbe_old/tests/willbe_old/_asset/workspace_with_deps/module/module2/src/lib.rs
deleted file mode 100644
index 3b9acffd5a..0000000000
--- a/module/blank/willbe_old/tests/willbe_old/_asset/workspace_with_deps/module/module2/src/lib.rs
+++ /dev/null
@@ -1,14 +0,0 @@
-pub fn add(left: usize, right: usize) -> usize {
-  left + right
-}
-
-#[cfg(test)]
-mod tests {
-  use super::*;
-
-  #[test]
-  fn it_works() {
-    let result = add(2, 2);
-    assert_eq!(result, 4);
-  }
-}
diff --git a/module/blank/willbe_old/tests/willbe_old/_asset/workspace_with_deps/module/module3/Cargo.toml b/module/blank/willbe_old/tests/willbe_old/_asset/workspace_with_deps/module/module3/Cargo.toml
deleted file mode 100644
index f0302e1626..0000000000
--- a/module/blank/willbe_old/tests/willbe_old/_asset/workspace_with_deps/module/module3/Cargo.toml
+++ /dev/null
@@ -1,9 +0,0 @@
-[package]
-name = "willbe_with_deps_module3"
-version = "0.1.0"
-edition = "2021"
-
-# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
-
-[dependencies]
-willbe_with_deps_module2 = { version = "*", path = "../module2" }
\ No newline at end of file
diff --git a/module/blank/willbe_old/tests/willbe_old/_asset/workspace_with_deps/module/module3/src/lib.rs b/module/blank/willbe_old/tests/willbe_old/_asset/workspace_with_deps/module/module3/src/lib.rs
deleted file mode 100644
index 3b9acffd5a..0000000000
--- a/module/blank/willbe_old/tests/willbe_old/_asset/workspace_with_deps/module/module3/src/lib.rs
+++ /dev/null
@@ -1,14 +0,0 @@
-pub fn add(left: usize, right: usize) -> usize {
-  left + right
-}
-
-#[cfg(test)]
-mod tests {
-  use super::*;
-
-  #[test]
-  fn it_works() {
-    let result = add(2, 2);
-    assert_eq!(result, 4);
-  }
-}
diff --git a/module/blank/willbe_old/tests/willbe_old/_asset/workspaces/Cargo.toml b/module/blank/willbe_old/tests/willbe_old/_asset/workspaces/Cargo.toml
deleted file mode 100644
index c5fc8a2bc2..0000000000
--- a/module/blank/willbe_old/tests/willbe_old/_asset/workspaces/Cargo.toml
+++ /dev/null
@@ -1,9 +0,0 @@
-[workspace]
-resolver = "2"
-members = [
-  "workspace1",
-  "workspace2",
-]
-exclude = [
-  "*",
-]
diff --git a/module/blank/willbe_old/tests/willbe_old/_asset/workspaces/workspace1/Cargo.toml b/module/blank/willbe_old/tests/willbe_old/_asset/workspaces/workspace1/Cargo.toml
deleted file mode 100644
index ad7fb73a88..0000000000
--- a/module/blank/willbe_old/tests/willbe_old/_asset/workspaces/workspace1/Cargo.toml
+++ /dev/null
@@ -1,8 +0,0 @@
-[workspace]
-resolver = "2"
-members = [
-  "module/*",
-]
-exclude = [
-  "*",
-]
diff --git a/module/blank/willbe_old/tests/willbe_old/_asset/workspaces/workspace1/module/module1/Cargo.toml b/module/blank/willbe_old/tests/willbe_old/_asset/workspaces/workspace1/module/module1/Cargo.toml
deleted file mode 100644
index ca345d6e39..0000000000
--- a/module/blank/willbe_old/tests/willbe_old/_asset/workspaces/workspace1/module/module1/Cargo.toml
+++ /dev/null
@@ -1,8 +0,0 @@
-[package]
-name = "willbe_workspace1_module1"
-version = "0.1.0"
-edition = "2021"
-
-# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
-
-[dependencies]
diff --git a/module/blank/willbe_old/tests/willbe_old/_asset/workspaces/workspace1/module/module1/src/lib.rs b/module/blank/willbe_old/tests/willbe_old/_asset/workspaces/workspace1/module/module1/src/lib.rs
deleted file mode 100644
index 3b9acffd5a..0000000000
--- a/module/blank/willbe_old/tests/willbe_old/_asset/workspaces/workspace1/module/module1/src/lib.rs
+++ /dev/null
@@ -1,14 +0,0 @@
-pub fn add(left: usize, right: usize) -> usize {
-  left + right
-}
-
-#[cfg(test)]
-mod tests {
-  use super::*;
-
-  #[test]
-  fn it_works() {
-    let result = add(2, 2);
-    assert_eq!(result, 4);
-  }
-}
diff --git a/module/blank/willbe_old/tests/willbe_old/_asset/workspaces/workspace1/module/module2/Cargo.toml b/module/blank/willbe_old/tests/willbe_old/_asset/workspaces/workspace1/module/module2/Cargo.toml
deleted file mode 100644
index d7de79e725..0000000000
--- a/module/blank/willbe_old/tests/willbe_old/_asset/workspaces/workspace1/module/module2/Cargo.toml
+++ /dev/null
@@ -1,8 +0,0 @@
-[package]
-name = "willbe_workspace1_module2"
-version = "0.1.0"
-edition = "2021"
-
-# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
-
-[dependencies]
\ No newline at end of file
diff --git a/module/blank/willbe_old/tests/willbe_old/_asset/workspaces/workspace1/module/module2/src/lib.rs b/module/blank/willbe_old/tests/willbe_old/_asset/workspaces/workspace1/module/module2/src/lib.rs
deleted file mode 100644
index 3b9acffd5a..0000000000
--- a/module/blank/willbe_old/tests/willbe_old/_asset/workspaces/workspace1/module/module2/src/lib.rs
+++ /dev/null
@@ -1,14 +0,0 @@
-pub fn add(left: usize, right: usize) -> usize {
-  left + right
-}
-
-#[cfg(test)]
-mod tests {
-  use super::*;
-
-  #[test]
-  fn it_works() {
-    let result = add(2, 2);
-    assert_eq!(result, 4);
-  }
-}
diff --git a/module/blank/willbe_old/tests/willbe_old/_asset/workspaces/workspace2/Cargo.toml b/module/blank/willbe_old/tests/willbe_old/_asset/workspaces/workspace2/Cargo.toml
deleted file mode 100644
index ad7fb73a88..0000000000
--- a/module/blank/willbe_old/tests/willbe_old/_asset/workspaces/workspace2/Cargo.toml
+++ /dev/null
@@ -1,8 +0,0 @@
-[workspace]
-resolver = "2"
-members = [
-  "module/*",
-]
-exclude = [
-  "*",
-]
diff --git a/module/blank/willbe_old/tests/willbe_old/_asset/workspaces/workspace2/module/module3/Cargo.toml b/module/blank/willbe_old/tests/willbe_old/_asset/workspaces/workspace2/module/module3/Cargo.toml
deleted file mode 100644
index 1e5b37708b..0000000000
--- a/module/blank/willbe_old/tests/willbe_old/_asset/workspaces/workspace2/module/module3/Cargo.toml
+++ /dev/null
@@ -1,8 +0,0 @@
-[package]
-name = "willbe_workspace2_module3"
-version = "0.1.0"
-edition = "2021"
-
-# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
-
-[dependencies]
diff --git a/module/blank/willbe_old/tests/willbe_old/_asset/workspaces/workspace2/module/module3/src/lib.rs b/module/blank/willbe_old/tests/willbe_old/_asset/workspaces/workspace2/module/module3/src/lib.rs
deleted file mode 100644
index 3b9acffd5a..0000000000
--- a/module/blank/willbe_old/tests/willbe_old/_asset/workspaces/workspace2/module/module3/src/lib.rs
+++ /dev/null
@@ -1,14 +0,0 @@
-pub fn add(left: usize, right: usize) -> usize {
-  left + right
-}
-
-#[cfg(test)]
-mod tests {
-  use super::*;
-
-  #[test]
-  fn it_works() {
-    let result = add(2, 2);
-    assert_eq!(result, 4);
-  }
-}
diff --git a/module/blank/willbe_old/tests/willbe_old/_asset/workspaces/workspace2/module/module4/Cargo.toml b/module/blank/willbe_old/tests/willbe_old/_asset/workspaces/workspace2/module/module4/Cargo.toml
deleted file mode 100644
index ce7cc9e559..0000000000
--- a/module/blank/willbe_old/tests/willbe_old/_asset/workspaces/workspace2/module/module4/Cargo.toml
+++ /dev/null
@@ -1,8 +0,0 @@
-[package]
-name = "willbe_workspace2_module4"
-version = "0.1.0"
-edition = "2021"
-
-# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
-
-[dependencies]
diff --git a/module/blank/willbe_old/tests/willbe_old/_asset/workspaces/workspace2/module/module4/src/lib.rs b/module/blank/willbe_old/tests/willbe_old/_asset/workspaces/workspace2/module/module4/src/lib.rs
deleted file mode 100644
index 3b9acffd5a..0000000000
--- a/module/blank/willbe_old/tests/willbe_old/_asset/workspaces/workspace2/module/module4/src/lib.rs
+++ /dev/null
@@ -1,14 +0,0 @@
-pub fn add(left: usize, right: usize) -> usize {
-  left + right
-}
-
-#[cfg(test)]
-mod tests {
-  use super::*;
-
-  #[test]
-  fn it_works() {
-    let result = add(2, 2);
-    assert_eq!(result, 4);
-  }
-}
diff --git a/module/blank/willbe_old/tests/willbe_old/_asset/workspaces/workspace2/module/module5/Cargo.toml b/module/blank/willbe_old/tests/willbe_old/_asset/workspaces/workspace2/module/module5/Cargo.toml
deleted file mode 100644
index ca174d8156..0000000000
--- a/module/blank/willbe_old/tests/willbe_old/_asset/workspaces/workspace2/module/module5/Cargo.toml
+++ /dev/null
@@ -1,8 +0,0 @@
-[package]
-name = "willbe_workspace2_module5"
-version = "0.1.0"
-edition = "2021"
-
-# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
-
-[dependencies]
diff --git a/module/blank/willbe_old/tests/willbe_old/_asset/workspaces/workspace2/module/module5/src/lib.rs b/module/blank/willbe_old/tests/willbe_old/_asset/workspaces/workspace2/module/module5/src/lib.rs
deleted file mode 100644
index 3b9acffd5a..0000000000
--- a/module/blank/willbe_old/tests/willbe_old/_asset/workspaces/workspace2/module/module5/src/lib.rs
+++ /dev/null
@@ -1,14 +0,0 @@
-pub fn add(left: usize, right: usize) -> usize {
-  left + right
-}
-
-#[cfg(test)]
-mod tests {
-  use super::*;
-
-  #[test]
-  fn it_works() {
-    let result = add(2, 2);
-    assert_eq!(result, 4);
-  }
-}
diff --git a/module/blank/willbe_old/tests/willbe_old/tests/from.rs b/module/blank/willbe_old/tests/willbe_old/tests/from.rs
deleted file mode 100644
index 0b3a81d171..0000000000
--- a/module/blank/willbe_old/tests/willbe_old/tests/from.rs
+++ /dev/null
@@ -1,38 +0,0 @@
-use super::*;
-
-#[ test ]
-fn from_empty_asset()
-{
-  let asset = Asset::from( PathBuf::from( ASSET_PATH ).join( "empty" ) );
-  let path = asset.path_buf();
-
-  let package = Package::try_from( path.to_owned() );
-  assert!( package.is_err() );
-
-  let workspace = Workspace::try_from( path.to_owned() );
-  assert!( workspace.is_err() );
-}
-
-#[ test ]
-fn package_from_path()
-{
-  let asset = Asset::from( PathBuf::from( ASSET_PATH ).join( "package" ) );
-  let path = asset.path_buf();
-
-  let package = Package::try_from( path.to_owned() );
-
-  assert!( package.is_ok() );
-  assert_eq!( *path, *package.unwrap().path() );
-}
-
-#[ test ]
-fn workspace_from_path()
-{
-  let package_asset = Asset::from( PathBuf::from( ASSET_PATH ).join( "package" ) );
-  let package_path = package_asset.path_buf();
-  assert!( Workspace::try_from( package_path.to_owned() ).is_err() );
-
-  let workspace_asset = Asset::from( PathBuf::from( ASSET_PATH ).join( "workspaces/workspace1" ) );
-  let workspace_path = workspace_asset.path_buf();
-  assert!( Workspace::try_from( workspace_path.to_owned() ).is_ok() );
-}
diff --git a/module/blank/willbe_old/tests/willbe_old/tests/integration/each.rs b/module/blank/willbe_old/tests/willbe_old/tests/integration/each.rs
deleted file mode 100644
index 21ede7825a..0000000000
--- a/module/blank/willbe_old/tests/willbe_old/tests/integration/each.rs
+++ /dev/null
@@ -1,130 +0,0 @@
-use super::*;
-
-#[ test ]
-fn many_workspaces_each_info() -> Result< (), Box< dyn std::error::Error > >
-{
-  let mut cmd = Command::cargo_bin( MODULE_NAME )?;
-  let package_asset = Asset::from( PathBuf::from( ASSET_PATH ).join( "workspaces" ) ).copied();
-  let package_path = package_asset.path_buf();
-
-  cmd.current_dir( package_path );
-  cmd.arg( ".each .crate.info" );
-
-  cmd
-  .assert()
-  .success()
-  .stdout
-  (
-    predicate::str::contains( "Name: \"willbe_workspace1_module1\"" ).count( 1 )
-    .and
-    (
-      predicate::str::contains( "Name: \"willbe_workspace1_module2\"" ).count( 1 )
-    )
-    .and
-    (
-      predicate::str::contains( "Name: \"willbe_workspace2_module3\"" ).count( 1 )
-    )
-    .and
-    (
-      predicate::str::contains( "Name: \"willbe_workspace2_module4\"" ).count( 1 )
-    )
-    .and
-    (
-      predicate::str::contains( "Name: \"willbe_workspace2_module5\"" ).count( 1 )
-    )
-  );
-
-  Ok( () )
-}
-
-#[ test ]
-fn workspace_each_info() -> Result< (), Box< dyn std::error::Error > >
-{
-  let mut cmd = Command::cargo_bin( MODULE_NAME )?;
-  let package_asset = Asset::from( PathBuf::from( ASSET_PATH ).join( "workspace_with_deps" ) ).copied();
-  let package_path = package_asset.path_buf();
-
-  cmd.current_dir( package_path );
-  cmd.arg( ".each .crate.info" );
-
-  cmd
-  .assert()
-  .success()
-  .stdout
-  (
-    predicate::str::contains( "Name: \"willbe_with_deps_module1\"" ).count( 1 )
-    .and
-    (
-      predicate::str::contains( "Name: \"willbe_with_deps_module2\"" ).count( 1 )
-    )
-    .and
-    (
-      predicate::str::contains( "Name: \"willbe_with_deps_module3\"" ).count( 1 )
-    )
-  );
-
-  Ok( () )
-}
-
-#[ test ]
-fn single_package_each_info() -> Result< (), Box< dyn std::error::Error > >
-{
-  let mut cmd = Command::cargo_bin( MODULE_NAME )?;
-  let package_asset = Asset::from( PathBuf::from( ASSET_PATH ).join( "package" ) ).copied();
-  let package_path = package_asset.path_buf();
-
-  cmd.current_dir( package_path );
-  cmd.arg( ".each .crate.info" );
-
-  cmd
-  .assert()
-  .success()
-  .stdout
-  (
-    predicate::str::contains( "Name: \"willbe_verified_package\"" ).count( 1 )
-  );
-
-  Ok( () )
-}
-
-#[ test ]
-fn empty_path_each_info() -> Result< (), Box< dyn std::error::Error > >
-{
-  let mut cmd = Command::cargo_bin( MODULE_NAME )?;
-  let package_asset = Asset::from( PathBuf::from( ASSET_PATH ).join( "empty" ) ).copied();
-  let package_path = package_asset.path_buf();
-
-  cmd.current_dir( package_path );
-  cmd.arg( ".each .crate.info" );
-
-  cmd
-  .assert()
-  .success()
-  .stdout
-  (
-    predicate::str::contains( "Any package was found at current directory" )
-  );
-
-  Ok( () )
-}
-
-#[ test ]
-fn another_command_after_each() -> Result< (), Box< dyn std::error::Error > >
-{
-  let mut cmd = Command::cargo_bin( MODULE_NAME )?;
-  let package_asset = Asset::from( PathBuf::from( ASSET_PATH ).join( "package" ) ).copied();
-  let package_path = package_asset.path_buf();
-
-  cmd.current_dir( package_path );
-  cmd.arg( ".each .crate.info .end .crate.info" );
-
-  cmd
-  .assert()
-  .success()
-  .stdout
-  (
-    predicate::str::contains( "Name: \"willbe_verified_package\"" ).count( 2 )
-  );
-
-  Ok( () )
-}
diff --git a/module/blank/willbe_old/tests/willbe_old/tests/integration/info.rs b/module/blank/willbe_old/tests/willbe_old/tests/integration/info.rs
deleted file mode 100644
index f9957e9942..0000000000
--- a/module/blank/willbe_old/tests/willbe_old/tests/integration/info.rs
+++ /dev/null
@@ -1,78 +0,0 @@
-use super::*;
-
-#[ test ]
-fn package_info() -> Result< (), Box< dyn std::error::Error > >
-{
-  let mut cmd = Command::cargo_bin( MODULE_NAME )?;
-  let package_asset = Asset::from( PathBuf::from( ASSET_PATH ).join( "package" ) ).copied();
-  let package_path = package_asset.path_buf();
-
-  cmd.current_dir( package_path );
-  cmd.arg( ".crate.info" );
-
-  cmd
-  .assert()
-  .success()
-  .stdout
-  (
-    predicate::str::contains( "Name: \"willbe_verified_package\"" )
-    .and
-    (
-      predicate::str::contains( "Version: \"0.1.0\"" )
-    )
-    .and
-    (
-      predicate::str::contains( "Description: \"Not found\"" )
-    )
-    .and
-    (
-      predicate::str::contains( "Documentation: \"Documentation text\"" )
-    )
-    .and
-    (
-      predicate::str::contains( "License: \"MIT\"" )
-    )
-    .and
-    (
-      predicate::str::contains( "Dependencies: []" )
-    )
-  );
-
-  Ok( () )
-}
-
-#[ test ]
-fn workspace_path_info() -> Result< (), Box< dyn std::error::Error > >
-{
-  let mut cmd = Command::cargo_bin( MODULE_NAME )?;
-  let package_asset = Asset::from( PathBuf::from( ASSET_PATH ).join( "workspaces/workspace1" ) ).copied();
-  let package_path = package_asset.path_buf();
-
-  cmd.current_dir( package_path );
-  cmd.arg( ".crate.info" );
-
-  cmd
-  .assert()
-  .failure()
-  .stderr( predicate::str::contains( "Package not found at current directory" ) );
-
-  Ok( () )
-}
-
-#[ test ]
-fn empty_path_info() -> Result< (), Box< dyn std::error::Error > > 
-{
-  let mut cmd = Command::cargo_bin( MODULE_NAME )?;
-  let package_asset = Asset::from( PathBuf::from( ASSET_PATH ).join( "empty" ) ).copied();
-  let package_path = package_asset.path_buf();
-
-  cmd.current_dir( package_path );
-  cmd.arg( ".crate.info" );
-
-  cmd
-  .assert()
-  .failure()
-  .stderr( predicate::str::contains( "Package not found at current directory" ) );
-
-  Ok( () )
-}
diff --git a/module/blank/willbe_old/tests/willbe_old/tests/integration/mod.rs b/module/blank/willbe_old/tests/willbe_old/tests/integration/mod.rs
deleted file mode 100644
index 6ac91b348b..0000000000
--- a/module/blank/willbe_old/tests/willbe_old/tests/integration/mod.rs
+++ /dev/null
@@ -1,8 +0,0 @@
-use super::*;
-use assert_cmd::Command;
-use predicates::prelude::*;
-
-const MODULE_NAME : &str = "willbe_old";
-
-mod each;
-mod info;
diff --git a/module/blank/willbe_old/tests/willbe_old/tests/iterator.rs b/module/blank/willbe_old/tests/willbe_old/tests/iterator.rs
deleted file mode 100644
index 38354cbc40..0000000000
--- a/module/blank/willbe_old/tests/willbe_old/tests/iterator.rs
+++ /dev/null
@@ -1,149 +0,0 @@
-use super::*;
-
-#[ test ]
-fn over_workspace()
-{
-  use std::collections::HashSet;
-
-  let workspace_asset = Asset::from( PathBuf::from( ASSET_PATH ).join( "workspaces/workspace1" ) );
-  let workspace_path = workspace_asset.path_buf();
-  let workspace = Workspace::try_from( workspace_path.to_owned() ).unwrap();
-  // `workspace.packages()` and `workspace.packages_iterate().collect::< Vec< _ > >()` is the same
-  let packages = workspace.packages();
-
-  let expected = HashSet::from([ "willbe_workspace1_module1".to_owned(), "willbe_workspace1_module2".to_owned() ]);
-
-  assert_eq!( expected.len(), packages.len() );
-  assert_eq!
-  (
-    expected,
-    packages.iter().cloned()
-    .filter_map( | p |
-    {
-      PackageMetadata::try_from( p ).ok()
-    })
-    .map( | meta | meta.name().to_owned() )
-    .collect::< HashSet< _ > >()
-  );
-}
-
-#[ test ]
-fn over_workspaces_iterator()
-{
-  use std::collections::HashSet;
-
-  let assets = vec!
-  [
-    Asset::from( PathBuf::from( ASSET_PATH ).join( "workspaces/workspace1" ) ),
-    Asset::from( PathBuf::from( ASSET_PATH ).join( "workspaces/workspace2" ) ),
-  ];
-  let workspaces = assets.iter()
-  .map( | asset | Workspace::try_from( asset.path_buf().to_owned() ) )
-  .filter_map( Result::ok )
-  .collect::< Vec< _ > >();
-
-  let packages = workspaces_packages_iterate( workspaces.into_iter() )
-  .collect::< Vec< _ > >();
-
-  let expected = HashSet::from(
-  [
-    "willbe_workspace1_module1".to_owned(),
-    "willbe_workspace1_module2".to_owned(),
-
-    "willbe_workspace2_module3".to_owned(),
-    "willbe_workspace2_module4".to_owned(),
-    "willbe_workspace2_module5".to_owned(),
-  ]);
-
-  assert_eq!( expected.len(), packages.len() );
-  assert_eq!
-  (
-    expected,
-    packages.iter().cloned()
-    .filter_map( | p |
-    {
-      PackageMetadata::try_from( p ).ok()
-    })
-    .map( | meta | meta.name().to_owned() )
-    .collect::< HashSet< _ > >()
-  );
-}
-
-#[ test ]
-fn over_empty_path()
-{
-  let empty_asset = Asset::from( PathBuf::from( ASSET_PATH ).join( "empty" ) );
-  let empty_path = empty_asset.path_buf();
-  let packages = packages_iterate( empty_path.to_owned() ).collect::< Vec< _ > >();
-
-  assert!( packages.is_empty() );
-}
-
-#[ test ]
-fn over_single_package_path()
-{
-  let package_asset = Asset::from( PathBuf::from( ASSET_PATH ).join( "package" ) ).copied();
-  let package_path = package_asset.path_buf();
-  let package = packages_iterate( package_path.to_owned() ).collect::< Vec< _ > >();
-
-  assert_eq!( 1, package.len() );
-  assert_eq!( "willbe_verified_package", PackageMetadata::try_from( package[ 0 ].clone() ).unwrap().all().name.as_str() );
-}
-
-#[ test ]
-fn over_single_workspace_path()
-{
-  use std::collections::HashSet;
-
-  let workspace_asset = Asset::from( PathBuf::from( ASSET_PATH ).join( "workspaces/workspace1" ) ).copied();
-  let workspace_path = workspace_asset.path_buf();
-  let packages = packages_iterate( workspace_path.to_owned() ).collect::< Vec< _ > >();
-
-  let expected = HashSet::from([ "willbe_workspace1_module1".to_owned(), "willbe_workspace1_module2".to_owned() ]);
-
-  assert_eq!( expected.len(), packages.len() );
-  assert_eq!
-  (
-    expected,
-    packages.iter().cloned()
-    .filter_map( | p |
-    {
-      PackageMetadata::try_from( p ).ok()
-    })
-    .map( | meta | meta.name().to_owned() )
-    .collect::< HashSet< _ > >()
-  );
-}
-
-#[ test ]
-fn over_workspaces_root_path()
-{
-  use std::collections::HashSet;
-
-  let many_workspaces_asset = Asset::from( PathBuf::from( ASSET_PATH ).join( "workspaces" ) ).copied();
-  let many_workspaces_path = many_workspaces_asset.path_buf();
-  let packages = packages_iterate( many_workspaces_path.to_owned() ).collect::< Vec< _ > >();
-
-  let expected = HashSet::from(
-  [
-    "willbe_workspace1_module1".to_owned(),
-    "willbe_workspace1_module2".to_owned(),
-
-    "willbe_workspace2_module3".to_owned(),
-    "willbe_workspace2_module4".to_owned(),
-    "willbe_workspace2_module5".to_owned(),
-  ]);
-
-  assert_eq!( expected.len(), packages.len() );
-  assert_eq!
-  (
-    expected,
-    packages.iter().cloned()
-    .filter_map( | p |
-    {
-      PackageMetadata::try_from( p ).ok()
-    })
-    .map( | meta | meta.name().to_owned() )
-    .collect::< HashSet< _ > >()
-  );
-}
diff --git a/module/blank/willbe_old/tests/willbe_old/tests/metadata.rs b/module/blank/willbe_old/tests/willbe_old/tests/metadata.rs
deleted file mode 100644
index efd11d457c..0000000000
--- a/module/blank/willbe_old/tests/willbe_old/tests/metadata.rs
+++ /dev/null
@@ -1,24 +0,0 @@
-use super::*;
-
-#[ test ]
-fn try_get_from_empty_asset()
-{
-  let empty_asset = Asset::from( PathBuf::from( ASSET_PATH ).join( "empty" ) ).copied();
-  let empty_asset_path = empty_asset.path_buf();
-
-  let meta = PackageMetadata::try_from( empty_asset_path.to_owned() );
-
-  assert!( meta.is_err() );
-}
-
-#[ test ]
-fn get_info()
-{
-  let package_asset = Asset::from( PathBuf::from( ASSET_PATH ).join( "package" ) ).copied();
-  let package_path = package_asset.path_buf();
-
-  let meta = PackageMetadata::try_from( package_path.to_owned() ).unwrap();
-
-  assert!( !meta.name().is_empty() );
-  assert!( !meta.version().is_empty() );
-}
diff --git a/module/blank/willbe_old/tests/willbe_old/tests/mod.rs b/module/blank/willbe_old/tests/willbe_old/tests/mod.rs
deleted file mode 100644
index 20e46e0375..0000000000
--- a/module/blank/willbe_old/tests/willbe_old/tests/mod.rs
+++ /dev/null
@@ -1,11 +0,0 @@
-use super::*;
-use utility::*;
-
-const ASSET_PATH : &str = concat!( env!("CARGO_MANIFEST_DIR"), "/tests/willbe_old/_asset" );
-
-mod integration;
-mod ordering;
-mod from;
-mod iterator;
-mod verification;
-mod metadata;
diff --git a/module/blank/willbe_old/tests/willbe_old/tests/ordering/mod.rs b/module/blank/willbe_old/tests/willbe_old/tests/ordering/mod.rs
deleted file mode 100644
index 683c5f15eb..0000000000
--- a/module/blank/willbe_old/tests/willbe_old/tests/ordering/mod.rs
+++ /dev/null
@@ -1,6 +0,0 @@
-use super::*;
-
-//? Write test for iteration over path has no reason because it delegates everything to another functions
-
-mod workspace;
-mod through_workspaces;
diff --git a/module/blank/willbe_old/tests/willbe_old/tests/ordering/through_workspaces.rs b/module/blank/willbe_old/tests/willbe_old/tests/ordering/through_workspaces.rs
deleted file mode 100644
index 58ab7788a4..0000000000
--- a/module/blank/willbe_old/tests/willbe_old/tests/ordering/through_workspaces.rs
+++ /dev/null
@@ -1,74 +0,0 @@
-use super::*;
-
-#[ test ]
-fn alphabetical()
-{
-  let workspace_asset = Asset::from( PathBuf::from( ASSET_PATH ).join( "workspaces/workspace1" ) ).copied();
-  let workspace_path = workspace_asset.path_buf();
-  let first_workspace = Workspace::try_from( workspace_path.to_owned() ).unwrap();
-
-  let workspace_asset = Asset::from( PathBuf::from( ASSET_PATH ).join( "workspaces/workspace2" ) ).copied();
-  let workspace_path = workspace_asset.path_buf();
-  let second_workspace = Workspace::try_from( workspace_path.to_owned() ).unwrap();
-
-  let source = 
-  [
-    &second_workspace, // module3, module4, module 5
-    &first_workspace,   // module1, module2
-  ];
-
-  let expected =
-  [
-    "willbe_workspace1_module1",
-    "willbe_workspace1_module2",
-
-    "willbe_workspace2_module3",
-    "willbe_workspace2_module4",
-    "willbe_workspace2_module5"
-  ];
-
-  assert_eq!
-  (
-    expected.iter().map( | m | m.to_string() ).collect::< Vec< _ > >(),
-    workspaces_packages_iterate( source.into_iter().cloned() )
-
-    .ordered_iter( OrderStrategy::Alphabetical )
-
-    .filter_map( | p | PackageMetadata::try_from( p ).ok() )
-    .map( | p | p.name().to_owned() )
-    .collect::< Vec< _ > >()
-  );
-}
-
-#[ test ]
-fn random()
-{
-  let workspace_asset = Asset::from( PathBuf::from( ASSET_PATH ).join( "workspaces/workspace1" ) ).copied();
-  let workspace_path = workspace_asset.path_buf();
-  let first_workspace = Workspace::try_from( workspace_path.to_owned() ).unwrap();
-
-  let workspace_asset = Asset::from( PathBuf::from( ASSET_PATH ).join( "workspaces/workspace2" ) ).copied();
-  let workspace_path = workspace_asset.path_buf();
-  let second_workspace = Workspace::try_from( workspace_path.to_owned() ).unwrap();
-
-  let source = 
-  [
-    &second_workspace, // module3, module4, module 5
-    &first_workspace,   // module1, module2
-  ];
-
-  dbg!
-  (
-    workspaces_packages_iterate( source.into_iter().cloned() )
-
-    .ordered( OrderStrategy::Random )
-
-    .iter().cloned()
-    .filter_map( | p | PackageMetadata::try_from( p ).ok() )
-    .map( | p | p.name().to_owned() )
-    .collect::< Vec< _ > >()
-  );
-
-  // TODO: make some check. Eg: source is not equal to ordered, but... It may be equal because random
-  assert!( true );
-}
diff --git a/module/blank/willbe_old/tests/willbe_old/tests/ordering/workspace.rs b/module/blank/willbe_old/tests/willbe_old/tests/ordering/workspace.rs
deleted file mode 100644
index 644fef1118..0000000000
--- a/module/blank/willbe_old/tests/willbe_old/tests/ordering/workspace.rs
+++ /dev/null
@@ -1,103 +0,0 @@
-use super::*;
-
-#[ test ]
-fn alphabetical()
-{
-  let package_asset = Asset::from( PathBuf::from( ASSET_PATH ).join( "workspaces/workspace1/module/module1" ) ).copied();
-  let package_path = package_asset.path_buf();
-  let first_package = Package::try_from( package_path.to_owned() ).unwrap();
-
-  let package_asset = Asset::from( PathBuf::from( ASSET_PATH ).join( "workspaces/workspace1/module/module2" ) ).copied();
-  let package_path = package_asset.path_buf();
-  let second_package = Package::try_from( package_path.to_owned() ).unwrap();
-
-  let package_asset = Asset::from( PathBuf::from( ASSET_PATH ).join( "workspaces/workspace2/module/module3" ) ).copied();
-  let package_path = package_asset.path_buf();
-  let third_package = Package::try_from( package_path.to_owned() ).unwrap();
-
-  let source =
-  [
-    &second_package,  // module2
-    &first_package,   // module1
-    &third_package,   // module3
-  ];
-
-  let expected = vec![ &first_package, &second_package, &third_package ];
-
-  assert_eq!
-  (
-    expected.iter().map( | p | p.path().to_owned() ).collect::< Vec< _ > >(),
-    source.into_iter().cloned()
-
-    .ordered_iter( OrderStrategy::Alphabetical )
-
-    .map( | p | p.path().to_owned() ).collect::< Vec< _ > >()
-  );
-}
-
-#[ test ]
-fn topological()
-{
-  let workspace_asset = Asset::from( PathBuf::from( ASSET_PATH ).join( "workspace_with_deps" ) ).copied();
-  let workspace_path = workspace_asset.path_buf();
-  let first_package = Package::try_from( workspace_path.to_owned().join( "module/module1" ) ).unwrap();
-  let second_package = Package::try_from( workspace_path.to_owned().join( "module/module2" ) ).unwrap();
-  let third_package = Package::try_from( workspace_path.to_owned().join( "module/module3" ) ).unwrap();
-
-  let source =
-  [
-    &third_package,   // module3 dependent on module2
-    &first_package,   // module1
-    &second_package,  // module2 dependent on module1
-  ];
-
-  let expected = vec![ &first_package, &second_package, &third_package ];
-
-  assert_eq!
-  (
-    expected.iter().map( | p | p.path().to_owned() ).collect::< Vec< _ > >(),
-    source.into_iter().cloned()
-
-    .ordered_iter( OrderStrategy::Topological )
-
-    .map( | p | p.path().to_owned() ).collect::< Vec< _ > >()
-  );
-}
-
-#[ test ]
-fn random()
-{
-  let package_asset = Asset::from( PathBuf::from( ASSET_PATH ).join( "workspaces/workspace1/module/module1" ) ).copied();
-  let package_path = package_asset.path_buf();
-  let first_package = Package::try_from( package_path.to_owned() ).unwrap();
-
-  let package_asset = Asset::from( PathBuf::from( ASSET_PATH ).join( "workspaces/workspace1/module/module2" ) ).copied();
-  let package_path = package_asset.path_buf();
-  let second_package = Package::try_from( package_path.to_owned() ).unwrap();
-
-  let package_asset = Asset::from( PathBuf::from( ASSET_PATH ).join( "workspaces/workspace2/module/module3" ) ).copied();
-  let package_path = package_asset.path_buf();
-  let third_package = Package::try_from( package_path.to_owned() ).unwrap();
-
-  let source =
-  [
-    &second_package,  // module2
-    &first_package,   // module1
-    &third_package,   // module3
-  ];
-
-  dbg!
-  (
-    source.into_iter().cloned()
-
-    .ordered( OrderStrategy::Random )
-
-    .iter().cloned()
-    .filter_map( | p | PackageMetadata::try_from( p ).ok() )
-    .map( | p | p.name().to_owned() )
-    .collect::< Vec< _ > >()
-  );
-
-  // TODO: make some check. Eg: source is not equal to ordered, but... It may be equal because random
-  assert!( true );
-}
diff --git a/module/blank/willbe_old/tests/willbe_old/tests/verification.rs b/module/blank/willbe_old/tests/willbe_old/tests/verification.rs
deleted file mode 100644
index 091a678ed3..0000000000
--- a/module/blank/willbe_old/tests/willbe_old/tests/verification.rs
+++ /dev/null
@@ -1,26 +0,0 @@
-use super::*;
-
-#[ test ]
-fn verified()
-{
-  let asset = Asset::from( PathBuf::from( ASSET_PATH ).join( "package" ) ).copied();
-  let path = asset.path_buf();
-
-  let meta = PackageMetadata::try_from( path.to_owned() ).unwrap();
-
-  assert!( meta.check_all() );
-}
-
-#[ test ]
-fn no_verified()
-{
-  let asset = Asset::from( PathBuf::from( ASSET_PATH ).join( "package_no_verified" ) ).copied();
-  let path = asset.path_buf();
-
-  let meta = PackageMetadata::try_from( path.to_owned() ).unwrap();
-
-  assert!( !meta.has_license() );
-  assert!( !meta.has_readme() );
-  assert!( !meta.has_documentation() );
-  assert!( !meta.is_tests_passed() );
-}
diff --git a/module/blank/willbe_old/tests/willbe_old/utility.rs b/module/blank/willbe_old/tests/willbe_old/utility.rs
deleted file mode 100644
index 9b5a83b0ea..0000000000
--- a/module/blank/willbe_old/tests/willbe_old/utility.rs
+++ /dev/null
@@ -1,71 +0,0 @@
-use std::{ io, fs };
-use std::path::Path;
-
-pub use std::path::PathBuf;
-
-#[ derive( Debug ) ]
-pub struct Asset
-{
-  remove_after_use : bool,
-  path : PathBuf,
-}
-
-impl From< PathBuf > for Asset
-{
-  fn from( path : PathBuf ) -> Self
-  {
-    Self{ remove_after_use : false, path }
-  }
-}
-
-impl Asset
-{
-  pub fn path_buf( &self ) -> &PathBuf
-  {
-    &self.path
-  }
-
-  pub fn copied( mut self ) -> Self
-  {
-    let tmp_dir = tempfile::tempdir().unwrap();
-
-    Self::copy_dir_all( &self.path, &tmp_dir ).unwrap();
-    self.path = tmp_dir.into_path();
-    self.remove_after_use = true;
-
-    self
-  }
-}
-
-impl Asset
-{
-  fn copy_dir_all( src : impl AsRef< Path >, dst : impl AsRef< Path > ) -> io::Result< () >
-  {
-    fs::create_dir_all(&dst)?;
-    for entry in fs::read_dir(src)?
-    {
-      let entry = entry?;
-      let ty = entry.file_type()?;
-      if ty.is_dir()
-      {
-        Asset::copy_dir_all( entry.path(), dst.as_ref().join( entry.file_name() ) )?;
-      } else
-      {
-        fs::copy( entry.path(), dst.as_ref().join( entry.file_name() ) )?;
-      }
-    }
-    Ok( () )
-  }
-}
-
-impl Drop for Asset
-{
-  fn drop( &mut self )
-  {
-    if self.remove_after_use
-    {
-      fs::remove_dir_all( &self.path )
-      .expect( &format!( "Can not delete \"{}\"", &self.path.display() ) )
-    }
-  }
-}
diff --git a/module/blank/willbe_old/tests/willbe_old/willbe_test.rs b/module/blank/willbe_old/tests/willbe_old/willbe_test.rs
deleted file mode 100644
index 2e70508245..0000000000
--- a/module/blank/willbe_old/tests/willbe_old/willbe_test.rs
+++ /dev/null
@@ -1,7 +0,0 @@
-use willbe_old::*;
-
-#[ cfg( not( feature = "no_std" ) ) ]
-mod utility;
-
-#[ cfg( not( feature = "no_std" ) ) ]
-mod tests;
diff --git a/module/blank/wlang/Cargo.toml b/module/blank/wlang/Cargo.toml
index 828d17a7c3..0b207714df 100644
--- a/module/blank/wlang/Cargo.toml
+++ b/module/blank/wlang/Cargo.toml
@@ -22,7 +22,7 @@ workspace = true
 [package.metadata.docs.rs]
 features = [ "full" ]
 all-features = false
-# exclude = [ "/tests", "/examples", "-*" ]
+
 include = [
   "/rust/impl/_blank",
   "/Cargo.toml",
diff --git a/module/blank/wlang/src/standard_lib.rs b/module/blank/wlang/src/standard_lib.rs
index 656b3eb36e..0814be4ffc 100644
--- a/module/blank/wlang/src/standard_lib.rs
+++ b/module/blank/wlang/src/standard_lib.rs
@@ -36,8 +36,10 @@ pub mod orphan
 }
 
 /// Exposed namespace of the module.
+#[ allow( unused_imports ) ]
 pub mod exposed
 {
+  use super::*;
 }
 
 /// Prelude to use essentials: `use my_module::prelude::*`.
diff --git a/module/core/clone_dyn/Readme.md b/module/core/clone_dyn/Readme.md
index a5fece766e..51f5e9d170 100644
--- a/module/core/clone_dyn/Readme.md
+++ b/module/core/clone_dyn/Readme.md
@@ -79,6 +79,8 @@ The main function demonstrates the overall usage by creating a vector, obtaining
   use clone_dyn::{ clone_dyn, CloneDyn };
 
   /// Trait that encapsulates an iterator with specific characteristics, tailored for your needs.
+  // Uncomment to see what macro expand into
+  // #[ clone_dyn( debug ) ]
   #[ clone_dyn ]
   pub trait IterTrait< 'a, T >
   where
diff --git a/module/core/clone_dyn/src/lib.rs b/module/core/clone_dyn/src/lib.rs
index 251186abd6..a930d8f296 100644
--- a/module/core/clone_dyn/src/lib.rs
+++ b/module/core/clone_dyn/src/lib.rs
@@ -53,8 +53,10 @@ pub mod orphan
 
 /// Exposed namespace of the module.
 #[ cfg( feature = "enabled" ) ]
+#[ allow( unused_imports ) ]
 pub mod exposed
 {
+  use super::*;
   #[ doc( inline ) ]
   #[ allow( unused_imports ) ]
   pub use super::prelude::*;
diff --git a/module/core/clone_dyn_meta/Cargo.toml b/module/core/clone_dyn_meta/Cargo.toml
index e8b060725b..8865a2022a 100644
--- a/module/core/clone_dyn_meta/Cargo.toml
+++ b/module/core/clone_dyn_meta/Cargo.toml
@@ -23,7 +23,7 @@ workspace = true
 [package.metadata.docs.rs]
 features = [ "full" ]
 all-features = false
-# exclude = [ "/tests", "/examples", "-*" ]
+
 
 [lib]
 proc-macro = true
@@ -34,7 +34,7 @@ full = [ "enabled" ]
 enabled = [ "macro_tools/enabled", "former_types/enabled" ]
 
 [dependencies]
-macro_tools = { workspace = true } # qqq : xxx : optimize set of features
+macro_tools = { workspace = true, features = [ "attr", "diag", "generic_params", "punctuated", "phantom", "item_struct"] } # qqq : xxx : optimize set of features
 former_types = { workspace = true, features = [ "types_component_assign" ] }
 # xxx : incapsulate into macro_tools
 const_format = { version = "0.2.32" }
diff --git a/module/core/clone_dyn_types/src/lib.rs b/module/core/clone_dyn_types/src/lib.rs
index a6c60f2824..ea2cf45be3 100644
--- a/module/core/clone_dyn_types/src/lib.rs
+++ b/module/core/clone_dyn_types/src/lib.rs
@@ -235,8 +235,10 @@ pub mod orphan
 
 /// Exposed namespace of the module.
 #[ cfg( feature = "enabled" ) ]
+#[ allow( unused_imports ) ]
 pub mod exposed
 {
+  use super::*;
   #[ doc( inline ) ]
   #[ allow( unused_imports ) ]
   pub use super::prelude::*;
diff --git a/module/core/collection_tools/Readme.md b/module/core/collection_tools/Readme.md
index 1fed2e48ad..39073acc98 100644
--- a/module/core/collection_tools/Readme.md
+++ b/module/core/collection_tools/Readme.md
@@ -75,7 +75,7 @@ When implementing a `no_std` environment with the `use_alloc` feature in your Ru
 
 You can do
 
-<!-- // zzz : aaa : rid off `#[ cfg( not( feature = "use_alloc" ) ) ]` -- Rid of by not relying on std -->
+<!-- // zzz : aaa : rid of `#[ cfg( not( feature = "use_alloc" ) ) ]` -- Rid of by not relying on std -->
 ```rust
 # #[ cfg( feature = "enabled" ) ]
 # #[ cfg( any( feature = "use_alloc", not( feature = "no_std" ) ) ) ]
diff --git a/module/core/collection_tools/examples/collection_tools_trivial.rs b/module/core/collection_tools/examples/collection_tools_trivial.rs
index b817a50c84..8a11bb85bf 100644
--- a/module/core/collection_tools/examples/collection_tools_trivial.rs
+++ b/module/core/collection_tools/examples/collection_tools_trivial.rs
@@ -27,7 +27,7 @@
 )))]
 fn main(){}
 
-// zzz : aaa : rid off `#[ cfg( not( feature = "use_alloc" ) ) ]` -- Rid of by not relying on std
+// zzz : aaa : rid of `#[ cfg( not( feature = "use_alloc" ) ) ]` -- Rid of by not relying on std
 // #[ cfg( not( feature = "use_alloc" ) ) ]
 #[ cfg( all( feature = "enabled", feature = "collection_constructors" ) ) ]
 #[ cfg( any( not( feature = "no_std" ), feature = "use_alloc" ) ) ]
diff --git a/module/core/collection_tools/src/lib.rs b/module/core/collection_tools/src/lib.rs
index 6171c0e365..e49bd87f31 100644
--- a/module/core/collection_tools/src/lib.rs
+++ b/module/core/collection_tools/src/lib.rs
@@ -53,8 +53,10 @@ pub mod orphan
 
 /// Exposed namespace of the module.
 #[ cfg( feature = "enabled" ) ]
+#[ allow( unused_imports ) ]
 pub mod exposed
 {
+  use super::*;
 
   #[ doc( inline ) ]
   #[ allow( unused_imports ) ]
diff --git a/module/core/data_type/Cargo.toml b/module/core/data_type/Cargo.toml
index cbb30c67f3..c727c2cca7 100644
--- a/module/core/data_type/Cargo.toml
+++ b/module/core/data_type/Cargo.toml
@@ -55,7 +55,7 @@ use_alloc = [ "no_std" ]
 enabled = []
 
 # dt_prelude = [ "collection_tools/reexports" ]
-dt_prelude = [] # rid off maybe?
+dt_prelude = [] # rid of maybe?
 dt_interval = [ "interval_adapter/enabled" ]
 dt_collections = [ "collection_tools/enabled" ]
 dt_either = [ "either" ]
diff --git a/module/core/data_type/src/dt.rs b/module/core/data_type/src/dt.rs
index 9fb884985f..3bb1802b81 100644
--- a/module/core/data_type/src/dt.rs
+++ b/module/core/data_type/src/dt.rs
@@ -24,8 +24,10 @@ pub mod orphan
 }
 
 /// Exposed namespace of the module.
+#[ allow( unused_imports ) ]
 pub mod exposed
 {
+  use super::*;
 
   #[ doc( inline ) ]
   #[ allow( unused_imports ) ]
diff --git a/module/core/data_type/src/lib.rs b/module/core/data_type/src/lib.rs
index 2ee15e40a1..622b7f82db 100644
--- a/module/core/data_type/src/lib.rs
+++ b/module/core/data_type/src/lib.rs
@@ -18,7 +18,7 @@ pub mod dependency
   #[ cfg( feature = "either" ) ]
   pub use ::either;
   // #[ cfg( feature = "type_constructor" ) ]
-  // pub use ::type_constructor; // xxx : rid off
+  // pub use ::type_constructor; // xxx : rid of
   #[ cfg( feature = "dt_interval" ) ]
   pub use ::interval_adapter;
   #[ cfg( feature = "dt_collection" ) ]
@@ -49,8 +49,10 @@ pub mod orphan
 }
 
 /// Exposed namespace of the module.
+#[ allow( unused_imports ) ]
 pub mod exposed
 {
+  use super::*;
 
   #[ doc( inline ) ]
   #[ allow( unused_imports ) ]
diff --git a/module/core/derive_tools/Cargo.toml b/module/core/derive_tools/Cargo.toml
index 905ef0bcca..2d724361e8 100644
--- a/module/core/derive_tools/Cargo.toml
+++ b/module/core/derive_tools/Cargo.toml
@@ -25,7 +25,7 @@ workspace = true
 [package.metadata.docs.rs]
 features = [ "full" ]
 all-features = false
-# exclude = [ "/tests", "/examples", "-*" ]
+
 
 
 [features]
diff --git a/module/core/derive_tools/src/lib.rs b/module/core/derive_tools/src/lib.rs
index 8cec034b59..303e909350 100644
--- a/module/core/derive_tools/src/lib.rs
+++ b/module/core/derive_tools/src/lib.rs
@@ -149,8 +149,10 @@ pub mod orphan
 
 /// Exposed namespace of the module.
 #[ cfg( feature = "enabled" ) ]
+#[ allow( unused_imports ) ]
 pub mod exposed
 {
+  use super::*;
   #[ doc( inline ) ]
   #[ allow( unused_imports ) ]
   pub use super::prelude::*;
diff --git a/module/core/derive_tools/tests/inc/mod.rs b/module/core/derive_tools/tests/inc/mod.rs
index 105aca981e..c0817b4d86 100644
--- a/module/core/derive_tools/tests/inc/mod.rs
+++ b/module/core/derive_tools/tests/inc/mod.rs
@@ -17,16 +17,16 @@ mod variadic_from_test;
 mod all_manual_test;
 #[ cfg
 (
-	all
-	(
-		feature = "derive_as_mut",
-		feature = "derive_as_ref",
-		feature = "derive_deref",
-		feature = "derive_deref_mut",
-		feature = "derive_from",
-		feature = "derive_inner_from",
-    feature = "derive_phantom",
-	)
+  all
+  (
+    feature = "derive_as_mut",
+    feature = "derive_as_ref",
+    feature = "derive_deref",
+    feature = "derive_deref_mut",
+    feature = "derive_from",
+    feature = "derive_inner_from",
+    feature = "derive_phantom"
+  )
 )]
 mod all_test;
 
@@ -162,8 +162,8 @@ mod deref_mut_tests
 #[ path = "new" ]
 mod new_tests
 {
-	#[ allow( unused_imports ) ]
-	use super::*;
+  #[ allow( unused_imports ) ]
+  use super::*;
 
   // qqq : for each branch add generic test
 
@@ -171,14 +171,14 @@ mod new_tests
 
   mod basic_manual_test;
   mod basic_test;
-	mod unit_manual_test;
-	mod unit_test;
-	mod named_manual_test;
-	mod named_test;
-	mod multiple_named_manual_test;
-	mod multiple_named_test;
-	mod multiple_unnamed_manual_test;
-	// mod multiple_unnamed_test;
+  mod unit_manual_test;
+  mod unit_test;
+  mod named_manual_test;
+  mod named_test;
+  mod multiple_named_manual_test;
+  mod multiple_named_test;
+  mod multiple_unnamed_manual_test;
+  // mod multiple_unnamed_test;
   // xxx : continue
 
   //
@@ -189,8 +189,8 @@ mod new_tests
 #[ path = "from" ]
 mod from_tests
 {
-	#[ allow( unused_imports ) ]
-	use super::*;
+  #[ allow( unused_imports ) ]
+  use super::*;
 
   // qqq : for each branch add generic test
 
@@ -201,34 +201,34 @@ mod from_tests
 
   //
 
-	mod named_test;
-	mod named_manual_test;
+  mod named_test;
+  mod named_manual_test;
 
-	mod multiple_named_manual_test;
-	mod multiple_unnamed_manual_test;
-	mod unit_manual_test;
-	mod multiple_named_test;
-	mod unit_test;
-	mod multiple_unnamed_test;
+  mod multiple_named_manual_test;
+  mod multiple_unnamed_manual_test;
+  mod unit_manual_test;
+  mod multiple_named_test;
+  mod unit_test;
+  mod multiple_unnamed_test;
 
-	mod variants_manual;
-	mod variants_derive;
+  mod variants_manual;
+  mod variants_derive;
 
-	mod variants_duplicates_all_off;
-	mod variants_duplicates_some_off;
-	mod variants_duplicates_some_off_default_off;
+  mod variants_duplicates_all_off;
+  mod variants_duplicates_some_off;
+  mod variants_duplicates_some_off_default_off;
 
-	mod variants_generics;
-	mod variants_generics_where;
-	mod variants_collisions;
+  mod variants_generics;
+  mod variants_generics_where;
+  mod variants_collisions;
 }
 
 #[ cfg( feature = "derive_inner_from" ) ]
 #[ path = "inner_from" ]
 mod inner_from_tests
 {
-	#[ allow( unused_imports ) ]
-	use super::*;
+  #[ allow( unused_imports ) ]
+  use super::*;
 
   //
 
@@ -237,14 +237,14 @@ mod inner_from_tests
 
   //
 
-	mod unit_test;
-	mod named_manual_test;
-	mod multiple_named_manual_test;
-	mod unit_manual_test;
-	mod named_test;
-	mod multiple_named_test;
-	mod multiple_unnamed_manual_test;
-	mod multiple_unnamed_test;
+  mod unit_test;
+  mod named_manual_test;
+  mod multiple_named_manual_test;
+  mod unit_manual_test;
+  mod named_test;
+  mod multiple_named_test;
+  mod multiple_unnamed_manual_test;
+  mod multiple_unnamed_test;
 
 }
 
diff --git a/module/core/derive_tools_meta/Cargo.toml b/module/core/derive_tools_meta/Cargo.toml
index ce8da61ae6..fc4959be4a 100644
--- a/module/core/derive_tools_meta/Cargo.toml
+++ b/module/core/derive_tools_meta/Cargo.toml
@@ -24,8 +24,6 @@ workspace = true
 features = [ "full" ]
 all-features = false
 
-# exclude = [ "/tests", "/examples", "-*" ]
-
 [lib]
 proc-macro = true
 
@@ -68,10 +66,11 @@ derive_phantom = []
 
 [dependencies]
 # zzz : qqq : optimize features set
-macro_tools = { workspace = true, features = [ "full" ] }
-iter_tools = { workspace = true, features = [ "full" ] }
+macro_tools = { workspace = true, features = [ "attr", "attr_prop", "container_kind", "diag", "generic_args", "typ", "derive", "generic_params", "name", "struct_like", "quantifier" ] }
+iter_tools = { workspace = true, features = [] }
 former_types = { workspace = true, features = [ "types_component_assign" ] }
 const_format = { version = "0.2.32" }
+# xxx2 : continue
 
 [dev-dependencies]
 test_tools = { workspace = true }
diff --git a/module/core/derive_tools_meta/src/derive.rs b/module/core/derive_tools_meta/src/derive.rs
index 1cce024835..e86b79ff3c 100644
--- a/module/core/derive_tools_meta/src/derive.rs
+++ b/module/core/derive_tools_meta/src/derive.rs
@@ -5,7 +5,6 @@
 
 #[ allow( unused_imports ) ]
 use macro_tools::prelude::*;
-// pub use macro_tools::{ Result, Many };
 pub use iter_tools as iter;
 
 #[ cfg( feature = "derive_as_mut" ) ]
diff --git a/module/core/derive_tools_meta/src/derive/from.rs b/module/core/derive_tools_meta/src/derive/from.rs
index 1e503d8480..314683d6d2 100644
--- a/module/core/derive_tools_meta/src/derive/from.rs
+++ b/module/core/derive_tools_meta/src/derive/from.rs
@@ -362,7 +362,7 @@ fn generate_multiple_fields_named< 'a >
     qt! { #field_name : src.#index }
   });
 
-  // xxx : qqq : rid off collects
+  // xxx : qqq : rid of collects
   // let field_types : Vec< _ > = field_types.collect();
   let field_types2 = field_types.clone();
   qt!
diff --git a/module/core/diagnostics_tools/Cargo.toml b/module/core/diagnostics_tools/Cargo.toml
index 5053a7402c..c2b7d7e994 100644
--- a/module/core/diagnostics_tools/Cargo.toml
+++ b/module/core/diagnostics_tools/Cargo.toml
@@ -24,7 +24,7 @@ workspace = true
 features = [ "full" ]
 all-features = false
 
-# exclude = [ "/tests", "/examples", "-*" ]
+
 
 [features]
 default = [
diff --git a/module/core/diagnostics_tools/src/diag/cta.rs b/module/core/diagnostics_tools/src/diag/cta.rs
index 60fc685938..914efc57aa 100644
--- a/module/core/diagnostics_tools/src/diag/cta.rs
+++ b/module/core/diagnostics_tools/src/diag/cta.rs
@@ -65,8 +65,10 @@ pub mod orphan
 }
 
 /// Exposed namespace of the module.
+#[ allow( unused_imports ) ]
 pub mod exposed
 {
+  use super::*;
   #[ doc( inline ) ]
   #[ allow( unused_imports ) ]
   pub use super::prelude::*;
diff --git a/module/core/diagnostics_tools/src/diag/layout.rs b/module/core/diagnostics_tools/src/diag/layout.rs
index 174ed9bc0e..898fafc5f5 100644
--- a/module/core/diagnostics_tools/src/diag/layout.rs
+++ b/module/core/diagnostics_tools/src/diag/layout.rs
@@ -105,8 +105,10 @@ pub mod orphan
 }
 
 /// Exposed namespace of the module.
+#[ allow( unused_imports ) ]
 pub mod exposed
 {
+  use super::*;
   #[ doc( inline ) ]
   #[ allow( unused_imports ) ]
   pub use super::prelude::*;
diff --git a/module/core/diagnostics_tools/src/diag/mod.rs b/module/core/diagnostics_tools/src/diag/mod.rs
index 821b020beb..7b66a16e2d 100644
--- a/module/core/diagnostics_tools/src/diag/mod.rs
+++ b/module/core/diagnostics_tools/src/diag/mod.rs
@@ -46,8 +46,10 @@ pub mod orphan
 }
 
 /// Exposed namespace of the module.
+#[ allow( unused_imports ) ]
 pub mod exposed
 {
+  use super::*;
   #[ doc( inline ) ]
   #[ allow( unused_imports ) ]
   pub use super::prelude::*;
diff --git a/module/core/diagnostics_tools/src/diag/rta.rs b/module/core/diagnostics_tools/src/diag/rta.rs
index 38b9b5a0f3..0ea56a2425 100644
--- a/module/core/diagnostics_tools/src/diag/rta.rs
+++ b/module/core/diagnostics_tools/src/diag/rta.rs
@@ -248,8 +248,10 @@ pub mod orphan
 }
 
 /// Exposed namespace of the module.
+#[ allow( unused_imports ) ]
 pub mod exposed
 {
+  use super::*;
   #[ doc( inline ) ]
   #[ allow( unused_imports ) ]
   pub use super::prelude::*;
diff --git a/module/core/diagnostics_tools/src/lib.rs b/module/core/diagnostics_tools/src/lib.rs
index cce36f97b7..43d15c537f 100644
--- a/module/core/diagnostics_tools/src/lib.rs
+++ b/module/core/diagnostics_tools/src/lib.rs
@@ -45,8 +45,10 @@ pub mod orphan
 
 /// Exposed namespace of the module.
 #[ cfg( feature = "enabled" ) ]
+#[ allow( unused_imports ) ]
 pub mod exposed
 {
+  use super::*;
   #[ doc( inline ) ]
   #[ allow( unused_imports ) ]
   pub use super::prelude::*;
diff --git a/module/core/error_tools/Cargo.toml b/module/core/error_tools/Cargo.toml
index 1ef5cccee8..e7a87b3379 100644
--- a/module/core/error_tools/Cargo.toml
+++ b/module/core/error_tools/Cargo.toml
@@ -25,27 +25,25 @@ workspace = true
 features = [ "full" ]
 all-features = false
 
-# exclude = [ "/tests", "/examples", "-*" ]
+
 
 # = features
 
 [features]
 default = [
   "enabled",
-  "error_for_lib",
-  "error_for_app",
+  "error_typed",
+  "error_untyped",
 ]
 full = [
-  "enabled",
-  "error_for_lib",
-  "error_for_app",
+  "default",
 ]
 no_std = []
 use_alloc = [ "no_std" ]
 enabled = []
 
-error_for_lib = [ "thiserror" ]
-error_for_app = [ "anyhow" ]
+error_typed = [ "thiserror" ]
+error_untyped = [ "anyhow" ]
 
 # = entry
 
diff --git a/module/core/error_tools/src/assert.rs b/module/core/error_tools/src/assert.rs
index 0fe7bcf1f6..6735ba23ca 100644
--- a/module/core/error_tools/src/assert.rs
+++ b/module/core/error_tools/src/assert.rs
@@ -135,8 +135,10 @@ pub mod orphan
 }
 
 /// Exposed namespace of the module.
+#[ allow( unused_imports ) ]
 pub mod exposed
 {
+  use super::*;
   #[ doc( inline ) ]
   #[ allow( unused_imports ) ]
   pub use super::prelude::*;
diff --git a/module/core/error_tools/src/error.rs b/module/core/error_tools/src/error.rs
index 0b8fa734ba..53fe212f86 100644
--- a/module/core/error_tools/src/error.rs
+++ b/module/core/error_tools/src/error.rs
@@ -135,8 +135,10 @@ pub mod orphan
 }
 
 /// Exposed namespace of the module.
+#[ allow( unused_imports ) ]
 pub mod exposed
 {
+  use super::*;
   #[ doc( inline ) ]
   #[ allow( unused_imports ) ]
   pub use super::prelude::*;
@@ -150,3 +152,4 @@ pub mod prelude
   pub use super::private::ErrorInterface;
   pub use super::private::BasicError;
 }
+// xxx : review
\ No newline at end of file
diff --git a/module/core/error_tools/src/lib.rs b/module/core/error_tools/src/lib.rs
index b672032358..9263d383bc 100644
--- a/module/core/error_tools/src/lib.rs
+++ b/module/core/error_tools/src/lib.rs
@@ -21,36 +21,25 @@ pub mod dependency
 
   #[ doc( inline ) ]
   #[ allow( unused_imports ) ]
-  #[ cfg( feature = "error_for_lib" ) ]
+  #[ cfg( feature = "error_typed" ) ]
   pub use ::thiserror;
 
   #[ doc( inline ) ]
   #[ allow( unused_imports ) ]
-  #[ cfg( feature = "error_for_app" ) ]
+  #[ cfg( feature = "error_untyped" ) ]
   pub use ::anyhow;
 
 }
 
 #[ cfg( feature = "enabled" ) ]
-/// Exceptions handling mechanism for libs.
-pub mod for_lib
-{
-  #[ doc( inline ) ]
-  #[ allow( unused_imports ) ]
-  #[ cfg( feature = "error_for_lib" ) ]
-  pub use ::thiserror::*;
-}
+#[ cfg( feature = "error_typed" ) ]
+/// Typed exceptions handling mechanism.
+pub mod typed;
 
 #[ cfg( feature = "enabled" ) ]
-// qqq : cover by simple test /* aaa : Dmytro : added trivial test routine `basic` */
-/// Exceptions handling mechanism for apps.
-pub mod for_app
-{
-  #[ doc( inline ) ]
-  #[ allow( unused_imports ) ]
-  #[ cfg( feature = "error_for_app" ) ]
-  pub use ::anyhow::*;
-}
+#[ cfg( feature = "error_untyped" ) ]
+/// Untyped exceptions handling mechanism.
+pub mod untyped;
 
 #[ cfg( feature = "enabled" ) ]
 #[ doc( inline ) ]
@@ -61,9 +50,28 @@ pub use protected::*;
 #[ cfg( feature = "enabled" ) ]
 pub mod protected
 {
+  #[ allow( unused_imports ) ]
+  use super::*;
+
   #[ doc( inline ) ]
   #[ allow( unused_imports ) ]
-  pub use super::orphan::*;
+  pub use assert::orphan::*;
+
+  #[ cfg( not( feature = "no_std" ) ) ]
+  #[ doc( inline ) ]
+  #[ allow( unused_imports ) ]
+  pub use error::orphan::*;
+
+  #[ cfg( feature = "error_untyped" ) ]
+  #[ doc( inline ) ]
+  #[ allow( unused_imports ) ]
+  pub use untyped::orphan::*;
+
+  #[ cfg( feature = "error_typed" ) ]
+  #[ doc( inline ) ]
+  #[ allow( unused_imports ) ]
+  pub use typed::orphan::*;
+
 }
 
 /// Shared with parent namespace of the module
@@ -75,26 +83,37 @@ pub mod orphan
   #[ allow( unused_imports ) ]
   pub use super::exposed::*;
 
-  #[ cfg( feature = "error_for_app" ) ]
-  pub use super::for_app::Result;
-
 }
 
 /// Exposed namespace of the module.
 #[ cfg( feature = "enabled" ) ]
+#[ allow( unused_imports ) ]
 pub mod exposed
 {
+  use super::*;
+
   #[ doc( inline ) ]
   #[ allow( unused_imports ) ]
-  pub use super::prelude::*;
+  pub use prelude::*;
+
   #[ doc( inline ) ]
   #[ allow( unused_imports ) ]
-  pub use super::assert::exposed::*;
+  pub use assert::exposed::*;
 
   #[ cfg( not( feature = "no_std" ) ) ]
   #[ doc( inline ) ]
   #[ allow( unused_imports ) ]
-  pub use super::error::exposed::*;
+  pub use error::exposed::*;
+
+  #[ cfg( feature = "error_untyped" ) ]
+  #[ doc( inline ) ]
+  #[ allow( unused_imports ) ]
+  pub use untyped::exposed::*;
+
+  #[ cfg( feature = "error_typed" ) ]
+  #[ doc( inline ) ]
+  #[ allow( unused_imports ) ]
+  pub use typed::exposed::*;
 
 }
 
@@ -102,4 +121,26 @@ pub mod exposed
 #[ cfg( feature = "enabled" ) ]
 pub mod prelude
 {
+  #[ allow( unused_imports ) ]
+  use super::*;
+
+  #[ doc( inline ) ]
+  #[ allow( unused_imports ) ]
+  pub use assert::prelude::*;
+
+  #[ cfg( not( feature = "no_std" ) ) ]
+  #[ doc( inline ) ]
+  #[ allow( unused_imports ) ]
+  pub use error::prelude::*;
+
+  #[ cfg( feature = "error_untyped" ) ]
+  #[ doc( inline ) ]
+  #[ allow( unused_imports ) ]
+  pub use untyped::prelude::*;
+
+  #[ cfg( feature = "error_typed" ) ]
+  #[ doc( inline ) ]
+  #[ allow( unused_imports ) ]
+  pub use typed::prelude::*;
+
 }
diff --git a/module/core/error_tools/src/typed.rs b/module/core/error_tools/src/typed.rs
new file mode 100644
index 0000000000..2e36bcaa5c
--- /dev/null
+++ b/module/core/error_tools/src/typed.rs
@@ -0,0 +1,60 @@
+/// Internal namespace.
+pub( crate ) mod private
+{
+
+}
+
+#[ doc( inline ) ]
+#[ allow( unused_imports ) ]
+pub use protected::*;
+
+/// Protected namespace of the module.
+pub mod protected
+{
+  #[ doc( inline ) ]
+  #[ allow( unused_imports ) ]
+  pub use super::orphan::*;
+}
+
+/// Shared with parent namespace of the module
+pub mod orphan
+{
+  pub use super::super::typed;
+  pub use super::super::typed as for_lib;
+
+  #[ doc( inline ) ]
+  #[ allow( unused_imports ) ]
+  pub use super::exposed::*;
+
+  #[ doc( inline ) ]
+  #[ allow( unused_imports ) ]
+  pub use ::thiserror::*;
+  // xxx : qqq : be specific
+
+}
+
+/// Exposed namespace of the module.
+#[ allow( unused_imports ) ]
+pub mod exposed
+{
+  use super::*;
+
+  #[ doc( inline ) ]
+  #[ allow( unused_imports ) ]
+  pub use super::prelude::*;
+
+  // #[ doc( inline ) ]
+  // #[ allow( unused_imports ) ]
+  // pub use ::thiserror::prelude::*;
+
+}
+
+/// Prelude to use essentials: `use my_module::prelude::*`.
+pub mod prelude
+{
+
+  #[ doc( inline ) ]
+  #[ allow( unused_imports ) ]
+  pub use thiserror;
+
+}
\ No newline at end of file
diff --git a/module/core/error_tools/src/untyped.rs b/module/core/error_tools/src/untyped.rs
new file mode 100644
index 0000000000..9c00619bc3
--- /dev/null
+++ b/module/core/error_tools/src/untyped.rs
@@ -0,0 +1,60 @@
+/// Internal namespace.
+pub( crate ) mod private
+{
+
+}
+
+#[ doc( inline ) ]
+#[ allow( unused_imports ) ]
+pub use protected::*;
+
+/// Protected namespace of the module.
+pub mod protected
+{
+  #[ doc( inline ) ]
+  #[ allow( unused_imports ) ]
+  pub use super::orphan::*;
+}
+
+/// Shared with parent namespace of the module
+pub mod orphan
+{
+  pub use super::super::untyped;
+  pub use super::super::untyped as for_app;
+
+  #[ doc( inline ) ]
+  #[ allow( unused_imports ) ]
+  pub use super::exposed::*;
+
+  #[ doc( inline ) ]
+  #[ allow( unused_imports ) ]
+  pub use ::anyhow::*;
+
+  // xxx : qqq : be specific
+
+}
+
+/// Exposed namespace of the module.
+#[ allow( unused_imports ) ]
+pub mod exposed
+{
+  use super::*;
+
+  #[ doc( inline ) ]
+  #[ allow( unused_imports ) ]
+  pub use super::prelude::*;
+
+  #[ doc( inline ) ]
+  #[ allow( unused_imports ) ]
+  pub use ::anyhow::Result;
+
+  // #[ doc( inline ) ]
+  // #[ allow( unused_imports ) ]
+  // pub use ::anyhow::prelude::*;
+
+}
+
+/// Prelude to use essentials: `use my_module::prelude::*`.
+pub mod prelude
+{
+}
\ No newline at end of file
diff --git a/module/core/error_tools/tests/inc/for_app_test.rs b/module/core/error_tools/tests/inc/for_app_test.rs
index e2eb7601f6..b76e52a16b 100644
--- a/module/core/error_tools/tests/inc/for_app_test.rs
+++ b/module/core/error_tools/tests/inc/for_app_test.rs
@@ -3,7 +3,7 @@ use super::*;
 
 //
 
-#[ cfg( feature = "error_for_app" ) ]
+#[ cfg( feature = "error_untyped" ) ]
 tests_impls!
 {
   fn basic()
@@ -19,7 +19,7 @@ tests_impls!
 
 //
 
-#[ cfg( feature = "error_for_app" ) ]
+#[ cfg( feature = "error_untyped" ) ]
 tests_index!
 {
   basic,
diff --git a/module/core/for_each/Cargo.toml b/module/core/for_each/Cargo.toml
index 4632085ca1..877ccbe184 100644
--- a/module/core/for_each/Cargo.toml
+++ b/module/core/for_each/Cargo.toml
@@ -24,7 +24,7 @@ workspace = true
 features = [ "full" ]
 all-features = false
 
-# exclude = [ "/tests", "/examples", "-*" ]
+
 # include = [
 #   "/rust/impl/meta/for_each",
 #   "/Cargo.toml",
diff --git a/module/core/for_each/src/lib.rs b/module/core/for_each/src/lib.rs
index c12e9a7513..a9acaba19f 100644
--- a/module/core/for_each/src/lib.rs
+++ b/module/core/for_each/src/lib.rs
@@ -494,8 +494,10 @@ pub mod orphan
 
 /// Exposed namespace of the module.
 #[ cfg( feature = "enabled" ) ]
+#[ allow( unused_imports ) ]
 pub mod exposed
 {
+  use super::*;
   #[ doc( inline ) ]
   #[ allow( unused_imports ) ]
   pub use super::prelude::*;
diff --git a/module/core/format_tools/Cargo.toml b/module/core/format_tools/Cargo.toml
index f3a45c9d8f..e13c738f11 100644
--- a/module/core/format_tools/Cargo.toml
+++ b/module/core/format_tools/Cargo.toml
@@ -22,7 +22,7 @@ workspace = true
 [package.metadata.docs.rs]
 features = [ "full" ]
 all-features = false
-# exclude = [ "/tests", "/examples", "-*" ]
+
 
 [features]
 
diff --git a/module/core/format_tools/src/format.rs b/module/core/format_tools/src/format.rs
index 845cfd33d2..b97f82657c 100644
--- a/module/core/format_tools/src/format.rs
+++ b/module/core/format_tools/src/format.rs
@@ -15,6 +15,8 @@ pub mod as_table;
 pub mod print;
 pub mod table;
 
+// xxx2 : continue
+
 #[ doc( inline ) ]
 #[ allow( unused_imports ) ]
 pub use protected::*;
@@ -55,8 +57,10 @@ pub mod orphan
 }
 
 /// Exposed namespace of the module.
+#[ allow( unused_imports ) ]
 pub mod exposed
 {
+  use super::*;
 
   #[ doc( inline ) ]
   #[ allow( unused_imports ) ]
diff --git a/module/core/format_tools/src/format/as_table.rs b/module/core/format_tools/src/format/as_table.rs
index cc6892a2c8..02e1b53c82 100644
--- a/module/core/format_tools/src/format/as_table.rs
+++ b/module/core/format_tools/src/format/as_table.rs
@@ -204,8 +204,10 @@ pub mod orphan
 }
 
 /// Exposed namespace of the module.
+#[ allow( unused_imports ) ]
 pub mod exposed
 {
+  use super::*;
 
   #[ doc( inline ) ]
   #[ allow( unused_imports ) ]
diff --git a/module/core/format_tools/src/format/print.rs b/module/core/format_tools/src/format/print.rs
index 72c6e7a53f..f39f63bc81 100644
--- a/module/core/format_tools/src/format/print.rs
+++ b/module/core/format_tools/src/format/print.rs
@@ -238,8 +238,10 @@ pub mod orphan
 }
 
 /// Exposed namespace of the module.
+#[ allow( unused_imports ) ]
 pub mod exposed
 {
+  use super::*;
 
   #[ doc( inline ) ]
   #[ allow( unused_imports ) ]
diff --git a/module/core/format_tools/src/format/table.rs b/module/core/format_tools/src/format/table.rs
index c847586e41..0b6f48b630 100644
--- a/module/core/format_tools/src/format/table.rs
+++ b/module/core/format_tools/src/format/table.rs
@@ -184,8 +184,10 @@ pub mod orphan
 }
 
 /// Exposed namespace of the module.
+#[ allow( unused_imports ) ]
 pub mod exposed
 {
+  use super::*;
 
   #[ doc( inline ) ]
   #[ allow( unused_imports ) ]
diff --git a/module/core/format_tools/src/format/to_string.rs b/module/core/format_tools/src/format/to_string.rs
index 7b6dad85b3..148f2a099d 100644
--- a/module/core/format_tools/src/format/to_string.rs
+++ b/module/core/format_tools/src/format/to_string.rs
@@ -79,8 +79,10 @@ pub mod orphan
 }
 
 /// Exposed namespace of the module.
+#[ allow( unused_imports ) ]
 pub mod exposed
 {
+  use super::*;
   #[ doc( inline ) ]
   #[ allow( unused_imports ) ]
   pub use super::private::
diff --git a/module/core/format_tools/src/format/to_string_with_fallback.rs b/module/core/format_tools/src/format/to_string_with_fallback.rs
index 0d551b2a82..cee18104a7 100644
--- a/module/core/format_tools/src/format/to_string_with_fallback.rs
+++ b/module/core/format_tools/src/format/to_string_with_fallback.rs
@@ -152,8 +152,10 @@ pub mod orphan
 }
 
 /// Exposed namespace of the module.
+#[ allow( unused_imports ) ]
 pub mod exposed
 {
+  use super::*;
   #[ doc( inline ) ]
   #[ allow( unused_imports ) ]
   pub use super::private::
diff --git a/module/core/format_tools/src/format/wrapper.rs b/module/core/format_tools/src/format/wrapper.rs
index 4cd134650f..36acb18449 100644
--- a/module/core/format_tools/src/format/wrapper.rs
+++ b/module/core/format_tools/src/format/wrapper.rs
@@ -31,8 +31,10 @@ pub mod orphan
 }
 
 /// Exposed namespace of the module.
+#[ allow( unused_imports ) ]
 pub mod exposed
 {
+  use super::*;
   #[ doc( inline ) ]
   #[ allow( unused_imports ) ]
   pub use super::
diff --git a/module/core/format_tools/src/lib.rs b/module/core/format_tools/src/lib.rs
index af0ae3ae89..a33026fccc 100644
--- a/module/core/format_tools/src/lib.rs
+++ b/module/core/format_tools/src/lib.rs
@@ -46,8 +46,10 @@ pub mod orphan
 
 /// Exposed namespace of the module.
 #[ cfg( feature = "enabled" ) ]
+#[ allow( unused_imports ) ]
 pub mod exposed
 {
+  use super::*;
 
   #[ doc( inline ) ]
   #[ allow( unused_imports ) ]
diff --git a/module/core/former/Cargo.toml b/module/core/former/Cargo.toml
index ca855af42a..8393ef382f 100644
--- a/module/core/former/Cargo.toml
+++ b/module/core/former/Cargo.toml
@@ -29,7 +29,6 @@ all-features = false
 no_std = [ "former_types/no_std", "collection_tools/no_std" ]
 use_alloc = [ "no_std", "former_types/use_alloc", "collection_tools/use_alloc" ]
 
-
 # no_std = [ "collection_tools/no_std" ]
 # use_alloc = [ "no_std", "collection_tools/use_alloc" ]
 
@@ -41,6 +40,8 @@ default = [
   "derive_component_assign",
   "derive_components_assign",
   "derive_from_components",
+  "types_former",
+  "types_component_assign",
 ]
 full = [
   "enabled",
@@ -50,16 +51,20 @@ full = [
   "derive_component_assign",
   "derive_components_assign",
   "derive_from_components",
+  "types_former",
+  "types_component_assign",
 ]
 enabled = [ "former_meta/enabled", "former_types/enabled" ]
 
-derive_former = [ "former_meta/derive_former", "former_types/derive_former" ]
-derive_components = [ "former_meta/derive_components", "former_types/types_components" ]
-derive_component_assign = [ "derive_components", "former_meta/derive_component_assign", "former_types/types_component_assign" ]
-derive_components_assign = [ "derive_components", "derive_component_assign", "former_meta/derive_components_assign" ]
-derive_component_from = [ "derive_components", "former_meta/derive_component_from" ]
-derive_from_components = [ "derive_components", "former_meta/derive_from_components" ]
+derive_former = [ "former_meta/derive_former", "types_former" ]
+derive_components = [ "former_meta/derive_components", "derive_component_assign", "derive_components_assign", "derive_component_from", "derive_from_components" ]
+derive_component_assign = [ "former_meta/derive_component_assign", "types_component_assign" ]
+derive_components_assign = [ "derive_component_assign", "former_meta/derive_components_assign" ]
+derive_component_from = [ "former_meta/derive_component_from" ]
+derive_from_components = [ "former_meta/derive_from_components" ]
 
+types_former = [ "former_types/types_former" ]
+types_component_assign = [ "former_types/types_component_assign" ]
 
 [dependencies]
 former_meta = { workspace = true }
diff --git a/module/core/former/src/lib.rs b/module/core/former/src/lib.rs
index 2eb4e674d2..7d5b86817e 100644
--- a/module/core/former/src/lib.rs
+++ b/module/core/former/src/lib.rs
@@ -4,34 +4,6 @@
 #![ doc( html_root_url = "https://docs.rs/former/latest/former/" ) ]
 #![ doc = include_str!( concat!( env!( "CARGO_MANIFEST_DIR" ), "/", "Readme.md" ) ) ]
 
-// /// Axiomatic things.
-// #[ cfg( feature = "enabled" ) ]
-// #[ cfg( feature = "derive_former" ) ]
-// mod axiomatic;
-// /// Forming process.
-// #[ cfg( feature = "enabled" ) ]
-// #[ cfg( feature = "derive_former" ) ]
-// mod definition;
-// /// Forming process.
-// #[ cfg( feature = "enabled" ) ]
-// #[ cfg( feature = "derive_former" ) ]
-// mod forming;
-// /// Storage.
-// #[ cfg( feature = "enabled" ) ]
-// #[ cfg( feature = "derive_former" ) ]
-// mod storage;
-//
-// /// Interface for collections.
-// #[ cfg( feature = "enabled" ) ]
-// #[ cfg( any( not( feature = "no_std" ), feature = "use_alloc" ) ) ]
-// #[ cfg( feature = "derive_former" ) ]
-// mod collection;
-//
-// /// Component-based forming.
-// #[ cfg( feature = "enabled" ) ]
-// #[ cfg( any( feature = "derive_component_from", feature = "derive_component_assign" ) ) ]
-// mod component;
-
 /// Namespace with dependencies.
 #[ cfg( feature = "enabled" ) ]
 pub mod dependency
@@ -68,8 +40,10 @@ pub mod orphan
 
 /// Exposed namespace of the module.
 #[ cfg( feature = "enabled" ) ]
+#[ allow( unused_imports ) ]
 pub mod exposed
 {
+  use super::*;
 
   #[ doc( inline ) ]
   #[ allow( unused_imports ) ]
@@ -83,23 +57,6 @@ pub mod exposed
   #[ allow( unused_imports ) ]
   pub use former_types::exposed::*;
 
-//   #[ doc( inline ) ]
-//   #[ allow( unused_imports ) ]
-//   #[ cfg( feature = "derive_former" ) ]
-//   pub use super::
-//   {
-//     axiomatic::*,
-//     definition::*,
-//     forming::*,
-//     storage::*,
-//   };
-//
-//   #[ doc( inline ) ]
-//   #[ allow( unused_imports ) ]
-//   #[ cfg( any( not( feature = "no_std" ), feature = "use_alloc" ) ) ]
-//   #[ cfg( feature = "derive_former" ) ]
-//   pub use super::collection::*;
-
 }
 
 /// Prelude to use essentials: `use my_module::prelude::*`.
@@ -107,11 +64,6 @@ pub mod exposed
 pub mod prelude
 {
 
-  // #[ doc( inline ) ]
-  // #[ allow( unused_imports ) ]
-  // #[ cfg( any( feature = "derive_component_from", feature = "derive_component_assign" ) ) ]
-  // pub use super::component::*;
-
   #[ doc( inline ) ]
   #[ allow( unused_imports ) ]
   pub use former_types::prelude::*;
diff --git a/module/core/former/tests/inc/components_tests/component_assign.rs b/module/core/former/tests/inc/components_tests/component_assign.rs
index 546cb3852b..cf02ef8935 100644
--- a/module/core/former/tests/inc/components_tests/component_assign.rs
+++ b/module/core/former/tests/inc/components_tests/component_assign.rs
@@ -3,6 +3,7 @@ use super::*;
 #[ allow( unused_imports ) ]
 use former::Assign;
 
+//
 
 #[ derive( Default, PartialEq, Debug, former::Assign ) ]
 // #[ debug ]
diff --git a/module/core/former/tests/inc/components_tests/only_test/component_assign.rs b/module/core/former/tests/inc/components_tests/only_test/component_assign.rs
index 0adb4ed674..0da82e46a7 100644
--- a/module/core/former/tests/inc/components_tests/only_test/component_assign.rs
+++ b/module/core/former/tests/inc/components_tests/only_test/component_assign.rs
@@ -9,4 +9,11 @@ fn component_assign()
   got.assign( "John" );
   assert_eq!( got, Person { age : 13, name : "John".to_string() } );
 
+  let mut got : Person = Default::default();
+  got = got
+  .impute( 13 )
+  .impute( "John" )
+  ;
+  assert_eq!( got, Person { age : 13, name : "John".to_string() } );
+
 }
diff --git a/module/core/former/tests/inc/former_tests/name_collision_former_hashmap_without_parameter.rs b/module/core/former/tests/inc/former_tests/name_collision_former_hashmap_without_parameter.rs
index 31df1f43e6..a1396f3ba2 100644
--- a/module/core/former/tests/inc/former_tests/name_collision_former_hashmap_without_parameter.rs
+++ b/module/core/former/tests/inc/former_tests/name_collision_former_hashmap_without_parameter.rs
@@ -1,3 +1,5 @@
+#![ allow( dead_code ) ]
+
 use super::*;
 use the_module::Former;
 
diff --git a/module/core/former/tests/inc/former_tests/name_collision_former_vector_without_parameter.rs b/module/core/former/tests/inc/former_tests/name_collision_former_vector_without_parameter.rs
index c79d0e8ba3..605bf9f4f4 100644
--- a/module/core/former/tests/inc/former_tests/name_collision_former_vector_without_parameter.rs
+++ b/module/core/former/tests/inc/former_tests/name_collision_former_vector_without_parameter.rs
@@ -1,3 +1,5 @@
+#![ allow( dead_code ) ]
+
 use super::*;
 use the_module::Former;
 
diff --git a/module/core/former/tests/inc/former_tests/name_collisions.rs b/module/core/former/tests/inc/former_tests/name_collisions.rs
index e23adcdd45..2dba7ce21f 100644
--- a/module/core/former/tests/inc/former_tests/name_collisions.rs
+++ b/module/core/former/tests/inc/former_tests/name_collisions.rs
@@ -1,3 +1,5 @@
+#![ allow( dead_code ) ]
+
 #[ allow( unused_imports ) ]
 use super::*;
 
diff --git a/module/core/former_meta/Cargo.toml b/module/core/former_meta/Cargo.toml
index 32b6323ecc..a6d39e082c 100644
--- a/module/core/former_meta/Cargo.toml
+++ b/module/core/former_meta/Cargo.toml
@@ -47,11 +47,11 @@ full = [
 enabled = [ "macro_tools/enabled", "iter_tools/enabled", "former_types/enabled" ]
 
 derive_former = [ "convert_case" ]
-derive_components = []
+derive_components = [ "derive_component_assign", "derive_components_assign", "derive_component_from", "derive_from_components" ]
 derive_component_assign = []
-derive_components_assign = [ "derive_components", "derive_component_assign", "convert_case" ]
-derive_component_from = [ "derive_components" ]
-derive_from_components = [ "derive_components" ]
+derive_components_assign = [ "derive_component_assign", "convert_case" ]
+derive_component_from = []
+derive_from_components = []
 
 [lib]
 proc-macro = true
diff --git a/module/core/former_types/Cargo.toml b/module/core/former_types/Cargo.toml
index 371a31a76a..35d239aa9f 100644
--- a/module/core/former_types/Cargo.toml
+++ b/module/core/former_types/Cargo.toml
@@ -30,21 +30,18 @@ use_alloc = [ "no_std", "collection_tools/use_alloc" ]
 
 default = [
   "enabled",
-  "derive_former",
-  "types_components",
+  "types_former",
   "types_component_assign",
 ]
 full = [
   "enabled",
-  "derive_former",
-  "types_components",
+  "types_former",
   "types_component_assign",
 ]
 enabled = [ "collection_tools/enabled" ]
 
-derive_former = []
-types_components = []
-types_component_assign = [ "types_components" ]
+types_former = []
+types_component_assign = []
 
 
 [dependencies]
diff --git a/module/core/former_types/Readme.md b/module/core/former_types/Readme.md
index ac57ecfc04..30e14aaf08 100644
--- a/module/core/former_types/Readme.md
+++ b/module/core/former_types/Readme.md
@@ -17,10 +17,10 @@ and implements the `Assign` trait for its fields. It shows how to use these impl
 instance using different types that can be converted into the required types.
 
 ```rust
-#[ cfg( any( not( feature = "derive_former" ), not( feature = "enabled" ) ) ) ]
+#[ cfg( any( not( feature = "types_former" ), not( feature = "enabled" ) ) ) ]
 fn main() {}
 
-#[ cfg( all( feature = "derive_former", feature = "enabled" ) ) ]
+#[ cfg( all( feature = "types_former", feature = "enabled" ) ) ]
 fn main()
 {
   use former_types::Assign;
diff --git a/module/core/former_types/examples/former_types_trivial.rs b/module/core/former_types/examples/former_types_trivial.rs
index c379293640..41c937b73a 100644
--- a/module/core/former_types/examples/former_types_trivial.rs
+++ b/module/core/former_types/examples/former_types_trivial.rs
@@ -20,10 +20,10 @@
 //!   - `got.assign( "John" )`: Assigns the string `"John"` to the `name` field.
 //!
 
-#[ cfg( any( not( feature = "derive_former" ), not( feature = "enabled" ) ) ) ]
+#[ cfg( any( not( feature = "types_former" ), not( feature = "enabled" ) ) ) ]
 fn main() {}
 
-#[ cfg( all( feature = "derive_former", feature = "enabled" ) ) ]
+#[ cfg( all( feature = "types_former", feature = "enabled" ) ) ]
 fn main()
 {
   use former_types::Assign;
diff --git a/module/core/former_types/src/collection.rs b/module/core/former_types/src/collection.rs
index eac724c018..f59ca28d52 100644
--- a/module/core/former_types/src/collection.rs
+++ b/module/core/former_types/src/collection.rs
@@ -534,8 +534,10 @@ pub mod orphan
 }
 
 /// Exposed namespace of the module.
+#[ allow( unused_imports ) ]
 pub mod exposed
 {
+  use super::*;
 
   #[ doc( inline ) ]
   #[ allow( unused_imports ) ]
diff --git a/module/core/former_types/src/collection/binary_heap.rs b/module/core/former_types/src/collection/binary_heap.rs
index 6652fe0c4e..ae76f5e4f8 100644
--- a/module/core/former_types/src/collection/binary_heap.rs
+++ b/module/core/former_types/src/collection/binary_heap.rs
@@ -125,8 +125,7 @@ where
 /// Holds the generic parameters for the `BinaryHeapDefinition`.
 ///
 /// This struct acts as a companion to `BinaryHeapDefinition`, providing a concrete definition of types used
-/// in the formation process. It is crucial for linking the type parameters with the operational mechanics
-/// of the formation and ensuring type safety and correctness throughout the formation lifecycle.
+/// in the formation process.
 ///
 /// # Type Parameters
 ///
diff --git a/module/core/former_types/src/component.rs b/module/core/former_types/src/component.rs
index 21398497d8..9e846e2673 100644
--- a/module/core/former_types/src/component.rs
+++ b/module/core/former_types/src/component.rs
@@ -47,6 +47,18 @@ where
   /// This method takes ownership of the given value (`component`), which is of type `IntoT`.
   /// `component` is then converted into type `T` and set as the component of the object.
   fn assign( &mut self, component : IntoT );
+
+  /// Sets or replaces the component on the object with the given value.
+  /// Unlike function (`assing`) function (`impute`) also consumes self and return it what is useful for builder pattern.
+  #[ inline( always ) ]
+  fn impute( mut self, component : IntoT ) -> Self
+  where
+    Self : Sized,
+  {
+    self.assign( component );
+    self
+  }
+
 }
 
 /// Extension trait to provide a method for setting a component on an `Option<Self>`
diff --git a/module/core/former_types/src/lib.rs b/module/core/former_types/src/lib.rs
index 51cfc78eab..018dde3ed7 100644
--- a/module/core/former_types/src/lib.rs
+++ b/module/core/former_types/src/lib.rs
@@ -6,25 +6,25 @@
 
 /// Axiomatic things.
 #[ cfg( feature = "enabled" ) ]
-#[ cfg( feature = "derive_former" ) ]
+#[ cfg( feature = "types_former" ) ]
 mod axiomatic;
 /// Definition of former.
 #[ cfg( feature = "enabled" ) ]
-#[ cfg( feature = "derive_former" ) ]
+#[ cfg( feature = "types_former" ) ]
 mod definition;
 /// Forming process.
 #[ cfg( feature = "enabled" ) ]
-#[ cfg( feature = "derive_former" ) ]
+#[ cfg( feature = "types_former" ) ]
 mod forming;
 /// Storage.
 #[ cfg( feature = "enabled" ) ]
-#[ cfg( feature = "derive_former" ) ]
+#[ cfg( feature = "types_former" ) ]
 mod storage;
 
 /// Interface for collections.
 #[ cfg( feature = "enabled" ) ]
 #[ cfg( any( not( feature = "no_std" ), feature = "use_alloc" ) ) ]
-#[ cfg( feature = "derive_former" ) ]
+#[ cfg( feature = "types_former" ) ]
 mod collection;
 
 /// Component-based forming.
@@ -64,8 +64,10 @@ pub mod orphan
 
 /// Exposed namespace of the module.
 #[ cfg( feature = "enabled" ) ]
+#[ allow( unused_imports ) ]
 pub mod exposed
 {
+  use super::*;
 
   #[ doc( inline ) ]
   #[ allow( unused_imports ) ]
@@ -73,7 +75,7 @@ pub mod exposed
 
   #[ doc( inline ) ]
   #[ allow( unused_imports ) ]
-  #[ cfg( feature = "derive_former" ) ]
+  #[ cfg( feature = "types_former" ) ]
   pub use super::
   {
     axiomatic::*,
@@ -85,7 +87,7 @@ pub mod exposed
   #[ doc( inline ) ]
   #[ allow( unused_imports ) ]
   #[ cfg( any( not( feature = "no_std" ), feature = "use_alloc" ) ) ]
-  #[ cfg( feature = "derive_former" ) ]
+  #[ cfg( feature = "types_former" ) ]
   pub use super::collection::*;
 
 }
diff --git a/module/core/former_types/tests/inc/mod.rs b/module/core/former_types/tests/inc/mod.rs
index 59fea4b027..79269a3c6f 100644
--- a/module/core/former_types/tests/inc/mod.rs
+++ b/module/core/former_types/tests/inc/mod.rs
@@ -3,7 +3,7 @@
 #[ allow( unused_imports ) ]
 use super::*;
 
-#[ cfg( feature = "derive_former" ) ]
+#[ cfg( feature = "types_former" ) ]
 #[ path = "../../../former/tests/inc/former_tests" ]
 mod former_tests
 {
@@ -27,7 +27,6 @@ mod former_tests
 
 }
 
-#[ cfg( feature = "types_components" ) ]
 #[ path = "../../../former/tests/inc/components_tests" ]
 mod components_tests
 {
diff --git a/module/core/fs_tools/src/fs/fs.rs b/module/core/fs_tools/src/fs/fs.rs
index eb6f6508de..98da9a36dc 100644
--- a/module/core/fs_tools/src/fs/fs.rs
+++ b/module/core/fs_tools/src/fs/fs.rs
@@ -73,8 +73,10 @@ pub mod orphan
 }
 
 /// Exposed namespace of the module.
+#[ allow( unused_imports ) ]
 pub mod exposed
 {
+  use super::*;
   #[ doc( inline ) ]
   #[ allow( unused_imports ) ]
   pub use super::prelude::*;
diff --git a/module/core/fs_tools/src/fs/lib.rs b/module/core/fs_tools/src/fs/lib.rs
index 1789116600..a4f7f72697 100644
--- a/module/core/fs_tools/src/fs/lib.rs
+++ b/module/core/fs_tools/src/fs/lib.rs
@@ -38,8 +38,10 @@ pub mod orphan
 }
 
 /// Exposed namespace of the module.
+#[ allow( unused_imports ) ]
 pub mod exposed
 {
+  use super::*;
   #[ doc( inline ) ]
   #[ allow( unused_imports ) ]
   pub use super::prelude::*;
diff --git a/module/core/implements/Cargo.toml b/module/core/implements/Cargo.toml
index 77f0b3ac2d..44a51ad680 100644
--- a/module/core/implements/Cargo.toml
+++ b/module/core/implements/Cargo.toml
@@ -24,7 +24,7 @@ workspace = true
 features = [ "full" ]
 all-features = false
 
-# exclude = [ "/tests", "/examples", "-*" ]
+
 
 [features]
 default = [ "enabled" ]
diff --git a/module/core/implements/src/lib.rs b/module/core/implements/src/lib.rs
index 92cdcaa96e..2472c1e0a2 100644
--- a/module/core/implements/src/lib.rs
+++ b/module/core/implements/src/lib.rs
@@ -94,8 +94,10 @@ pub mod orphan
 
 /// Exposed namespace of the module.
 #[ cfg( feature = "enabled" ) ]
+#[ allow( unused_imports ) ]
 pub mod exposed
 {
+  use super::*;
   #[ doc( inline ) ]
   #[ allow( unused_imports ) ]
   pub use super::prelude::*;
diff --git a/module/core/impls_index/src/impls_index/func.rs b/module/core/impls_index/src/impls_index/func.rs
index cf9bed4e69..33da44bbcb 100644
--- a/module/core/impls_index/src/impls_index/func.rs
+++ b/module/core/impls_index/src/impls_index/func.rs
@@ -233,8 +233,10 @@ pub( crate ) mod private
 }
 
 /// Exposed namespace of the module.
+#[ allow( unused_imports ) ]
 pub mod exposed
 {
+  use super::*;
   #[ doc( inline ) ]
   #[ allow( unused_imports ) ]
   pub use super::prelude::*;
diff --git a/module/core/impls_index/src/impls_index/impls.rs b/module/core/impls_index/src/impls_index/impls.rs
index 2d07e37d9c..ac34c9f5f1 100644
--- a/module/core/impls_index/src/impls_index/impls.rs
+++ b/module/core/impls_index/src/impls_index/impls.rs
@@ -376,8 +376,10 @@ pub( crate ) mod private
 }
 
 /// Exposed namespace of the module.
+#[ allow( unused_imports ) ]
 pub mod exposed
 {
+  use super::*;
   #[ doc( inline ) ]
   #[ allow( unused_imports ) ]
   pub use super::prelude::*;
diff --git a/module/core/impls_index/src/impls_index/mod.rs b/module/core/impls_index/src/impls_index/mod.rs
index 3fa0ed3c93..236dd9f083 100644
--- a/module/core/impls_index/src/impls_index/mod.rs
+++ b/module/core/impls_index/src/impls_index/mod.rs
@@ -42,8 +42,10 @@ pub mod orphan
 }
 
 /// Exposed namespace of the module.
+#[ allow( unused_imports ) ]
 pub mod exposed
 {
+  use super::*;
   #[ doc( inline ) ]
   #[ allow( unused_imports ) ]
   pub use super::prelude::*;
diff --git a/module/core/impls_index/src/lib.rs b/module/core/impls_index/src/lib.rs
index f70d8cc177..ad03bdb776 100644
--- a/module/core/impls_index/src/lib.rs
+++ b/module/core/impls_index/src/lib.rs
@@ -44,8 +44,10 @@ pub mod orphan
 
 /// Exposed namespace of the module.
 #[ cfg( feature = "enabled" ) ]
+#[ allow( unused_imports ) ]
 pub mod exposed
 {
+  use super::*;
   #[ doc( inline ) ]
   #[ allow( unused_imports ) ]
   pub use super::prelude::*;
diff --git a/module/core/impls_index_meta/Cargo.toml b/module/core/impls_index_meta/Cargo.toml
index d3b1c21a9f..562eff0f95 100644
--- a/module/core/impls_index_meta/Cargo.toml
+++ b/module/core/impls_index_meta/Cargo.toml
@@ -23,7 +23,7 @@ workspace = true
 [package.metadata.docs.rs]
 features = [ "full" ]
 all-features = false
-# exclude = [ "/tests", "/examples", "-*" ]
+
 
 [features]
 default = [ "enabled" ]
diff --git a/module/core/include_md/Cargo.toml b/module/core/include_md/Cargo.toml
index 410d16c21b..ad29aa3f81 100644
--- a/module/core/include_md/Cargo.toml
+++ b/module/core/include_md/Cargo.toml
@@ -24,7 +24,7 @@ workspace = true
 features = [ "full" ]
 all-features = false
 
-# exclude = [ "/tests", "/examples", "-*" ]
+
 include = [
   "/rust/impl/_blank",
   "/Cargo.toml",
diff --git a/module/core/include_md/src/_blank/standard_lib.rs b/module/core/include_md/src/_blank/standard_lib.rs
index d335841385..95cfbde4da 100644
--- a/module/core/include_md/src/_blank/standard_lib.rs
+++ b/module/core/include_md/src/_blank/standard_lib.rs
@@ -42,8 +42,10 @@ pub mod orphan
 }
 
 /// Exposed namespace of the module.
+#[ allow( unused_imports ) ]
 pub mod exposed
 {
+  use super::*;
 }
 
 
diff --git a/module/core/inspect_type/Cargo.toml b/module/core/inspect_type/Cargo.toml
index 8c55f439ac..c5055f1110 100644
--- a/module/core/inspect_type/Cargo.toml
+++ b/module/core/inspect_type/Cargo.toml
@@ -24,7 +24,7 @@ workspace = true
 features = [ "full" ]
 all-features = false
 
-# exclude = [ "/tests", "/examples", "-*" ]
+
 
 [features]
 default = [ "enabled" ]
diff --git a/module/core/inspect_type/src/lib.rs b/module/core/inspect_type/src/lib.rs
index b0e8da7f37..17cfd16a0a 100644
--- a/module/core/inspect_type/src/lib.rs
+++ b/module/core/inspect_type/src/lib.rs
@@ -84,8 +84,10 @@ pub mod orphan
 }
 
 /// Exposed namespace of the module.
+#[ allow( unused_imports ) ]
 pub mod exposed
 {
+  use super::*;
   #[ doc( inline ) ]
   #[ allow( unused_imports ) ]
   pub use super::prelude::*;
diff --git a/module/core/interval_adapter/Cargo.toml b/module/core/interval_adapter/Cargo.toml
index f08b7f12a0..49ac72262d 100644
--- a/module/core/interval_adapter/Cargo.toml
+++ b/module/core/interval_adapter/Cargo.toml
@@ -24,7 +24,7 @@ workspace = true
 features = [ "full" ]
 all-features = false
 
-# exclude = [ "/tests", "/examples", "-*" ]
+
 
 [features]
 default = [ "enabled" ]
diff --git a/module/core/interval_adapter/src/lib.rs b/module/core/interval_adapter/src/lib.rs
index 8391104eda..e43040b817 100644
--- a/module/core/interval_adapter/src/lib.rs
+++ b/module/core/interval_adapter/src/lib.rs
@@ -611,8 +611,10 @@ pub mod orphan
 
 /// Exposed namespace of the module.
 #[ cfg( feature = "enabled" ) ]
+#[ allow( unused_imports ) ]
 pub mod exposed
 {
+  use super::*;
   #[ doc( inline ) ]
   #[ allow( unused_imports ) ]
   pub use super::prelude::*;
diff --git a/module/core/is_slice/Cargo.toml b/module/core/is_slice/Cargo.toml
index b3cb822caa..afcff35d65 100644
--- a/module/core/is_slice/Cargo.toml
+++ b/module/core/is_slice/Cargo.toml
@@ -24,7 +24,7 @@ workspace = true
 features = [ "full" ]
 all-features = false
 
-# exclude = [ "/tests", "/examples", "-*" ]
+
 
 [features]
 default = [ "enabled" ]
diff --git a/module/core/is_slice/src/lib.rs b/module/core/is_slice/src/lib.rs
index eea3ea5978..a17856812a 100644
--- a/module/core/is_slice/src/lib.rs
+++ b/module/core/is_slice/src/lib.rs
@@ -96,8 +96,10 @@ pub mod orphan
 
 /// Exposed namespace of the module.
 #[ cfg( feature = "enabled" ) ]
+#[ allow( unused_imports ) ]
 pub mod exposed
 {
+  use super::*;
   #[ doc( inline ) ]
   #[ allow( unused_imports ) ]
   pub use super::prelude::*;
diff --git a/module/core/iter_tools/Cargo.toml b/module/core/iter_tools/Cargo.toml
index 0675b432e9..8e288271af 100644
--- a/module/core/iter_tools/Cargo.toml
+++ b/module/core/iter_tools/Cargo.toml
@@ -24,18 +24,23 @@ workspace = true
 features = [ "full" ]
 all-features = false
 
-# exclude = [ "/tests", "/examples", "-*" ]
+
 
 [features]
 default = [ "enabled" ]
 full = [ "enabled" ]
 no_std = []
 use_alloc = [ "itertools/use_alloc" ]
-enabled = []
+enabled = [ "clone_dyn_types/enabled" ]
 
 [dependencies]
+
+# external
 itertools = { version = "~0.11.0", features = [ "use_std" ] }
 # qqq : update
 
+# internal
+clone_dyn_types = { workspace = true, features = [] }
+
 [dev-dependencies]
 test_tools = { workspace = true }
diff --git a/module/core/iter_tools/src/iter.rs b/module/core/iter_tools/src/iter.rs
index 3a9218186f..28990645b5 100644
--- a/module/core/iter_tools/src/iter.rs
+++ b/module/core/iter_tools/src/iter.rs
@@ -4,23 +4,151 @@ pub( crate ) mod private
 {
   use ::itertools::process_results;
 
-  // fn collect_results< I, T, E >( iter : I ) -> core::result::Result< Vec< T >, E >
-  // where
-  //   I : Iterator< Item = core::result::Result< T, E > > + Clone,
-  //   E : core::fmt::Debug,
-  // {
-  //   for e in iter.clone()
-  //   {
-  //     if e.is_err()
-  //     {
-  //       e?;
-  //     }
-  //   }
-  //   Ok( iter.map( | e | e.unwrap() ).collect() )
-  // }
+  use clone_dyn_types::CloneDyn;
+
+  /// Trait that encapsulates an iterator with specific characteristics and implemetning `CloneDyn`.
+  ///
+  /// The `_IterTrait` trait is designed to represent iterators that may yield references to items ( `&'a T` ).
+  /// These iterators must also implement the `ExactSizeIterator` and `DoubleEndedIterator` traits.
+  /// This combination ensures that the iterator can:
+  /// - Provide an exact size hint ( `ExactSizeIterator` ),
+  /// - Be traversed from both ends ( `DoubleEndedIterator` ).
+  ///
+  /// Additionally, the iterator must implement the `CloneDyn` trait, which allows cloning of trait objects.
+  ///
+  /// # Example
+  /// ```rust
+  /// use iter_tools::_IterTrait;
+  ///
+  /// // Example struct that implements Iterator, ExactSizeIterator, DoubleEndedIterator, and CloneDyn.
+  /// #[ derive( Clone ) ]
+  /// struct MyIterator
+  /// {
+  ///   // internal fields
+  /// }
+  ///
+  /// impl Iterator for MyIterator
+  /// {
+  ///   type Item = i32;
+  ///
+  ///   fn next( &mut self ) -> Option< Self::Item >
+  ///   {
+  ///     // implementation
+  ///     Some( 1 )
+  ///   }
+  /// }
+  ///
+  /// impl ExactSizeIterator for MyIterator
+  /// {
+  ///   fn len( &self ) -> usize
+  ///   {
+  ///     // implementation
+  ///     1
+  ///   }
+  /// }
+  ///
+  /// impl DoubleEndedIterator for MyIterator
+  /// {
+  ///   fn next_back( &mut self ) -> Option< Self::Item >
+  ///   {
+  ///     // implementation
+  ///     Some( 1 )
+  ///   }
+  /// }
+  ///
+  /// ```
+
+  pub trait _IterTrait< 'a, T >
+  where
+    T : 'a,
+    Self : Iterator< Item = T > + ExactSizeIterator< Item = T > + DoubleEndedIterator,
+    Self : CloneDyn,
+  {
+  }
+
+  impl< 'a, T, I > _IterTrait< 'a, T > for I
+  where
+    T : 'a,
+    Self : Iterator< Item = T > + ExactSizeIterator< Item = T > + DoubleEndedIterator,
+    Self : CloneDyn,
+  {
+  }
+
+  /// Trait that encapsulates a clonable iterator with specific characteristics, tailored for use with the `syn` crate.
+  ///
+  /// The `IterTrait` trait is designed to represent iterators that may yield references to items ( `&'a T` ) within the `syn` crate.
+  /// These iterators must also implement the `ExactSizeIterator`, `DoubleEndedIterator`, and `Clone` traits.
+  /// This combination ensures that the iterator can:
+  /// - Provide an exact size hint ( `ExactSizeIterator` ),
+  /// - Be traversed from both ends ( `DoubleEndedIterator` ),
+  /// - Be clonable ( `Clone` ).
+  ///
+  pub trait IterTrait< 'a, T >
+  where
+    T : 'a,
+    Self : _IterTrait< 'a, T > + Clone,
+  {
+  }
+
+  impl< 'a, T, I > IterTrait< 'a, T > for I
+  where
+    T : 'a,
+    Self : _IterTrait< 'a, T > + Clone,
+  {
+  }
+
+  /// Implement `Clone` for boxed `_IterTrait` trait objects.
+  ///
+  /// This allows cloning of boxed iterators that implement `_IterTrait`.
+  #[ allow( non_local_definitions ) ]
+  impl< 'c, T > Clone for Box< dyn _IterTrait< 'c, T > + 'c >
+  {
+    #[ inline ]
+    fn clone( &self ) -> Self
+    {
+      clone_dyn_types::clone_into_box( &**self )
+    }
+  }
+
+  #[ allow( non_local_definitions ) ]
+  impl< 'c, T > Clone for Box< dyn _IterTrait< 'c, T > + Send + 'c >
+  {
+    #[ inline ]
+    fn clone( &self ) -> Self
+    {
+      clone_dyn_types::clone_into_box( &**self )
+    }
+  }
+
+  #[ allow( non_local_definitions ) ]
+  impl< 'c, T > Clone for Box< dyn _IterTrait< 'c, T > + Sync + 'c >
+  {
+    #[ inline ]
+    fn clone( &self ) -> Self
+    {
+      clone_dyn_types::clone_into_box( &**self )
+    }
+  }
+
+  #[ allow( non_local_definitions ) ]
+  impl< 'c, T > Clone for Box< dyn _IterTrait< 'c, T > + Send + Sync + 'c >
+  {
+    #[ inline ]
+    fn clone( &self ) -> Self
+    {
+      clone_dyn_types::clone_into_box( &**self )
+    }
+  }
+
+  /// Type alias for boxed `_IterTrait` trait objects.
+  ///
+  /// Prefer `BoxedIter` over `impl _IterTrait` when using trait objects ( `dyn _IterTrait` ) because the concrete type in return is less restrictive than `impl _IterTrait`.
+  ///
+  pub type BoxedIter< 'a, T > = Box< dyn _IterTrait< 'a, T > + 'a >;
 
   /// Extension of iterator.
 
+  // xxx : review
   pub trait IterExt
   where
     Self : core::iter::Iterator,
@@ -29,11 +157,8 @@ pub( crate ) mod private
     fn map_result< F, RE, El >( self, f : F ) -> core::result::Result< Vec< El >, RE >
     where
       Self : Sized + Clone,
-      // Self : Sized,
       F : FnMut( < Self as core::iter::Iterator >::Item ) -> core::result::Result< El, RE >,
       RE : core::fmt::Debug,
-      // El : Clone,
-      // core::result::Result< El, RE > : Clone,
     ;
   }
 
@@ -46,16 +171,10 @@ pub( crate ) mod private
       Self : Sized + Clone,
       F : FnMut( < Self as core::iter::Iterator >::Item ) -> core::result::Result< El, RE >,
       RE : core::fmt::Debug,
-      // El : Clone,
-      // core::result::Result< El, RE > : Clone,
     {
       let vars_maybe = self.map( f );
       let vars : Vec< _ > = process_results( vars_maybe, | iter | iter.collect() )?;
-      // let vars = collect_results( vars_maybe.clone() )?;
       Ok( vars )
-      // let result : ( Vec< _ >, Vec< _ >, Vec< _ > )
-      // = vars.into_iter().multiunzip();
-      // Ok( result )
     }
   }
 
@@ -73,23 +192,18 @@ pub mod protected
   #[ doc( inline ) ]
   #[ allow( unused_imports ) ]
   pub use super::orphan::*;
+
 }
 
 /// Orphan namespace of the module.
 #[ cfg( feature = "enabled" ) ]
 pub mod orphan
 {
+
   #[ doc( inline ) ]
   #[ allow( unused_imports ) ]
   pub use super::exposed::*;
-}
 
-/// Exposed namespace of the module.
-pub mod exposed
-{
-  #[ doc( inline ) ]
-  #[ allow( unused_imports ) ]
-  pub use super::prelude::*;
 
   #[ doc( inline ) ]
   #[ allow( unused_imports ) ]
@@ -132,6 +246,7 @@ pub mod exposed
     unfold,
     // zip,
     zip_eq,
+    Itertools,
   };
 
   #[ cfg( not( feature = "no_std" ) ) ]
@@ -141,6 +256,27 @@ pub mod exposed
 
 }
 
+/// Exposed namespace of the module.
+#[ allow( unused_imports ) ]
+pub mod exposed
+{
+  use super::*;
+
+  #[ doc( inline ) ]
+  #[ allow( unused_imports ) ]
+  pub use super::prelude::*;
+
+  #[ doc( inline ) ]
+  #[ allow( unused_imports ) ]
+  pub use super::private::
+  {
+    _IterTrait,
+    IterTrait,
+    BoxedIter,
+  };
+
+}
+
 /// Prelude to use essentials: `use my_module::prelude::*`.
 pub mod prelude
 {
@@ -156,7 +292,6 @@ pub mod prelude
     MinMaxResult,
     Position,
     Itertools,
-    /*MultiUnzip,*/
     PeekingNext,
   };
 
diff --git a/module/core/iter_tools/src/lib.rs b/module/core/iter_tools/src/lib.rs
index 043285af78..a65398090b 100644
--- a/module/core/iter_tools/src/lib.rs
+++ b/module/core/iter_tools/src/lib.rs
@@ -2,14 +2,6 @@
 #![ doc( html_logo_url = "https://raw.githubusercontent.com/Wandalen/wTools/master/asset/img/logo_v3_trans_square.png" ) ]
 #![ doc( html_favicon_url = "https://raw.githubusercontent.com/Wandalen/wTools/alpha/asset/img/logo_v3_trans_square_icon_small_v2.ico" ) ]
 #![ doc( html_root_url = "https://docs.rs/iter_tools/latest/iter_tools/" ) ]
-// #![ deny( rust_2018_idioms ) ]
-// #![ deny( missing_debug_implementations ) ]
-// #![ deny( missing_docs ) ]
-
-//!
-//! Collection of general purpose tools to iterate. Currently it simply reexports itertools.
-//!
-
 #![ doc = include_str!( concat!( env!( "CARGO_MANIFEST_DIR" ), "/", "Readme.md" ) ) ]
 
 /// Core module.
@@ -32,12 +24,15 @@ pub use protected::*;
 #[ cfg( feature = "enabled" ) ]
 pub mod protected
 {
+
   #[ doc( inline ) ]
   #[ allow( unused_imports ) ]
   pub use super::orphan::*;
+
   #[ doc( inline ) ]
   #[ allow( unused_imports ) ]
   pub use super::iter::orphan::*;
+
 }
 
 /// Orphan namespace of the module.
@@ -51,8 +46,10 @@ pub mod orphan
 
 /// Exposed namespace of the module.
 #[ cfg( feature = "enabled" ) ]
+#[ allow( unused_imports ) ]
 pub mod exposed
 {
+  use super::*;
   #[ doc( inline ) ]
   #[ allow( unused_imports ) ]
   pub use super::prelude::*;
diff --git a/module/core/macro_tools/Cargo.toml b/module/core/macro_tools/Cargo.toml
index 5071cdb8d0..c0506c8eea 100644
--- a/module/core/macro_tools/Cargo.toml
+++ b/module/core/macro_tools/Cargo.toml
@@ -23,18 +23,69 @@ workspace = true
 [package.metadata.docs.rs]
 features = [ "full" ]
 all-features = false
-# exclude = [ "/tests", "/examples", "-*" ]
+
 
 [features]
-default = [ "enabled" ]
-full = [ "enabled" ]
+default = [
+  "enabled",
+  "attr",
+  "attr_prop",
+  "components",
+  "ct",
+  "container_kind",
+  "derive",
+  "diag",
+  "drop",
+  "equation",
+  "generic_args",
+  "generic_params",
+  "item",
+  "item_struct",
+  "name",
+  "kw",
+  "phantom",
+  "punctuated",
+  "quantifier",
+  "struct_like",
+  "tokens",
+  "typ",
+]
+full = [
+  "default",
+]
+
 enabled = [
   "former_types/enabled",
   "interval_adapter/enabled",
   "clone_dyn_types/enabled",
+  "iter_tools/enabled",
 ]
 
-# qqq : put all files under features: macro_attr, macro_container_kind, ...
+attr = [ "diag" ]
+attr_prop = [ "components" ]
+components = []
+ct = []
+container_kind = [ "typ" ]
+derive = []
+diag = []
+drop = []
+equation = []
+generic_args = []
+generic_params = []
+item = []
+item_struct = []
+iter = []
+name = []
+kw = []
+phantom = [ "item" ]
+punctuated = []
+quantifier = []
+struct_like = []
+tokens = []
+typ = []
+
+# qqq : zzz : put all files under features: macro_attr, macro_container_kind, ...
+# qqq : zzz : optimize features list
 
 [dependencies]
 
@@ -42,14 +93,13 @@ enabled = [
 proc-macro2 = { version = "~1.0.78", features = [] }
 quote = { version = "~1.0.35", features = [] }
 syn = { version = "~2.0.52", features = [ "full", "extra-traits" ] }
-
-# qqq : optimize features list
+const_format = { version = "0.2.32", features = [] }
 
 ## internal
 interval_adapter = { workspace = true, features = [] }
+iter_tools = { workspace = true, features = [] }
+clone_dyn_types = { workspace = true, features = [] }
 former_types = { workspace = true, features = [ "types_component_assign" ] }
-clone_dyn_types = { workspace = true, features = [] } # xxx : qqq : optimize features
 
 [dev-dependencies]
 test_tools = { workspace = true }
-const_format = { version = "0.2.32" }
diff --git a/module/core/macro_tools/Readme.md b/module/core/macro_tools/Readme.md
index 62e2e0013a..1121555152 100644
--- a/module/core/macro_tools/Readme.md
+++ b/module/core/macro_tools/Readme.md
@@ -89,6 +89,7 @@ fn main()
   use macro_tools::
   {
     attr,
+    ct,
     syn_err,
     return_syn_err,
     qt,
@@ -97,8 +98,8 @@ fn main()
     AttributePropertyComponent,
     AttributePropertyBoolean,
     AttributePropertySingletone,
+    Assign,
   };
-  use former_types::Assign;
 
   /// Represents the attributes of a struct. Aggregates all its attributes.
   #[ derive( Debug, Default ) ]
@@ -121,12 +122,11 @@ fn main()
       // Closure to generate an error message for unknown attributes.
       let error = | attr : & syn::Attribute | -> syn::Error
       {
-        let known_attributes = const_format::concatcp!
+        let known_attributes = ct::str::format!
         (
-          "Known attributes are: ",
+          "Known attributes are: {}, {}.",
           "debug",
-          ", ", AttributeMutator::KEYWORD,
-          "."
+          AttributeMutator::KEYWORD,
         );
         syn_err!
         (
@@ -241,12 +241,12 @@ fn main()
 
       let error = | ident : & syn::Ident | -> syn::Error
       {
-        let known = const_format::concatcp!
+        let known = ct::str::format!
         (
-          "Known entries of attribute ", AttributeMutator::KEYWORD, " are: ",
+          "Known entries of attribute {} are: {}, {}.",
+          AttributeMutator::KEYWORD,
           AttributePropertyCustom::KEYWORD,
-          ", ", AttributePropertyDebug::KEYWORD,
-          "."
+          AttributePropertyDebug::KEYWORD,
         );
         syn_err!
         (
diff --git a/module/core/macro_tools/examples/macro_tools_attr_prop.rs b/module/core/macro_tools/examples/macro_tools_attr_prop.rs
index 8a5f62d22c..3c18928fd1 100644
--- a/module/core/macro_tools/examples/macro_tools_attr_prop.rs
+++ b/module/core/macro_tools/examples/macro_tools_attr_prop.rs
@@ -34,6 +34,7 @@ fn main()
 
   use macro_tools::
   {
+    ct,
     syn_err,
     return_syn_err,
     qt,
@@ -42,8 +43,8 @@ fn main()
     AttributePropertyComponent,
     AttributePropertyBoolean,
     AttributePropertySingletone,
+    Assign,
   };
-  use former_types::Assign;
 
   /// Represents the attributes of a struct. Aggregates all its attributes.
   #[ derive( Debug, Default ) ]
@@ -66,12 +67,11 @@ fn main()
       // Closure to generate an error message for unknown attributes.
       let error = | attr : & syn::Attribute | -> syn::Error
       {
-        let known_attributes = const_format::concatcp!
+        let known_attributes = ct::str::format!
         (
-          "Known attributes are: ",
+          "Known attributes are: {}, {}.",
           "debug",
-          ", ", AttributeMutator::KEYWORD,
-          "."
+          AttributeMutator::KEYWORD,
         );
         syn_err!
         (
@@ -191,12 +191,12 @@ fn main()
 
       let error = | ident : & syn::Ident | -> syn::Error
       {
-        let known = const_format::concatcp!
+        let known = ct::str::format!
         (
-          "Known entries of attribute ", AttributeMutator::KEYWORD, " are: ",
+          "Known entries of attribute {} are: {}, {}.",
+          AttributeMutator::KEYWORD,
           AttributePropertyCustom::KEYWORD,
-          ", ", AttributePropertyDebug::KEYWORD,
-          "."
+          AttributePropertyDebug::KEYWORD,
         );
         syn_err!
         (
diff --git a/module/core/macro_tools/src/attr.rs b/module/core/macro_tools/src/attr.rs
index 4524ded53e..fb442d6133 100644
--- a/module/core/macro_tools/src/attr.rs
+++ b/module/core/macro_tools/src/attr.rs
@@ -50,7 +50,7 @@ pub( crate ) mod private
   /// ```
   ///
 
-  pub fn has_debug< 'a >( attrs : impl Iterator< Item = &'a syn::Attribute > ) -> Result< bool >
+  pub fn has_debug< 'a >( attrs : impl Iterator< Item = &'a syn::Attribute > ) -> syn::Result< bool >
   {
     for attr in attrs
     {
@@ -211,7 +211,7 @@ pub( crate ) mod private
   impl syn::parse::Parse
   for AttributesInner
   {
-    fn parse( input : ParseStream< '_ > ) -> Result< Self >
+    fn parse( input : ParseStream< '_ > ) -> syn::Result< Self >
     {
       // let mut result : Self = from!();
       let mut result : Self = Default::default();
@@ -286,7 +286,7 @@ pub( crate ) mod private
   impl syn::parse::Parse
   for AttributesOuter
   {
-    fn parse( input : ParseStream< '_ > ) -> Result< Self >
+    fn parse( input : ParseStream< '_ > ) -> syn::Result< Self >
     {
       let mut result : Self = Default::default();
       loop
@@ -335,7 +335,7 @@ pub( crate ) mod private
   /// # Example
   ///
   /// ```rust
-  /// use macro_tools::{ AttributeComponent, Result };
+  /// use macro_tools::{ AttributeComponent, syn::Result };
   /// use syn::{ Attribute, Error };
   ///
   /// struct MyComponent;
@@ -344,7 +344,7 @@ pub( crate ) mod private
   /// {
   ///   const KEYWORD : &'static str = "my_component";
   ///
-  ///   fn from_meta( attr : &Attribute ) -> Result<Self>
+  ///   fn from_meta( attr : &Attribute ) -> syn::Result<Self>
   ///   {
   ///     // Parsing logic here
   ///     // Return Ok(MyComponent) if parsing is successful
@@ -360,7 +360,7 @@ pub( crate ) mod private
   ///
   /// # Returns
   ///
-  /// A `Result` containing the constructed component if successful, or an error if the parsing fails.
+  /// A `syn::Result` containing the constructed component if successful, or an error if the parsing fails.
   ///
   pub trait AttributeComponent
   where
@@ -384,42 +384,9 @@ pub( crate ) mod private
     ///
     /// # Returns
     ///
-    /// A `Result` containing the constructed component if successful, or an error if the parsing fails.
-    fn from_meta( attr : &syn::Attribute ) -> Result< Self >;
-  }
-
-  /// Trait for properties of an attribute component that can be identified by a keyword.
-  ///
-  /// The `AttributePropertyComponent` trait defines the interface for attribute properties
-  /// that can be identified by a specific keyword. Implementors of this trait are required
-  /// to define a constant `KEYWORD` that identifies the type of the property.
-  ///
-  /// This trait is useful in scenarios where attributes may have multiple properties
-  /// that need to be parsed and handled separately. By defining a unique keyword for each property,
-  /// the parsing logic can accurately identify and process each property.
-  ///
-  /// # Example
-  ///
-  /// ```rust
-  /// use macro_tools::AttributePropertyComponent;
-  ///
-  /// struct MyProperty;
-  ///
-  /// impl AttributePropertyComponent for MyProperty
-  /// {
-  ///   const KEYWORD : &'static str = "my_property";
-  /// }
-  /// ```
-  ///
-  pub trait AttributePropertyComponent
-  where
-    Self : Sized,
-  {
-    /// The keyword that identifies the component.
-    ///
-    /// This constant is used to match the attribute to the corresponding property.
-    /// Each implementor of this trait must provide a unique keyword for its type.
-    const KEYWORD : &'static str;
+    /// A `syn::Result` containing the constructed component if successful, or an error if the parsing fails.
+    fn from_meta( attr : &syn::Attribute ) -> syn::Result< Self >;
+    // xxx : redo
   }
 
 }
@@ -453,9 +420,13 @@ pub mod orphan
 }
 
 /// Exposed namespace of the module.
+// xxx2 : continue
+#[ allow( unused_imports ) ]
 pub mod exposed
 {
-  pub use super::protected as attr;
+  use super::*;
+  pub use super::super::attr;
+
   #[ doc( inline ) ]
   #[ allow( unused_imports ) ]
   pub use super::prelude::*;
@@ -467,7 +438,7 @@ pub mod exposed
     AttributesOuter,
 
     AttributeComponent,
-    AttributePropertyComponent,
+    // AttributePropertyComponent,
   };
 }
 
diff --git a/module/core/macro_tools/src/attr_prop.rs b/module/core/macro_tools/src/attr_prop.rs
index 4e5020eff2..1942ea9e05 100644
--- a/module/core/macro_tools/src/attr_prop.rs
+++ b/module/core/macro_tools/src/attr_prop.rs
@@ -107,6 +107,40 @@ pub( crate ) mod private
 {
   // use crate::*;
 
+  /// Trait for properties of an attribute component that can be identified by a keyword.
+  ///
+  /// The `AttributePropertyComponent` trait defines the interface for attribute properties
+  /// that can be identified by a specific keyword. Implementors of this trait are required
+  /// to define a constant `KEYWORD` that identifies the type of the property.
+  ///
+  /// This trait is useful in scenarios where attributes may have multiple properties
+  /// that need to be parsed and handled separately. By defining a unique keyword for each property,
+  /// the parsing logic can accurately identify and process each property.
+  ///
+  /// # Example
+  ///
+  /// ```rust
+  /// use macro_tools::AttributePropertyComponent;
+  ///
+  /// struct MyProperty;
+  ///
+  /// impl AttributePropertyComponent for MyProperty
+  /// {
+  ///   const KEYWORD : &'static str = "my_property";
+  /// }
+  /// ```
+  ///
+  pub trait AttributePropertyComponent
+  where
+    Self : Sized,
+  {
+    /// The keyword that identifies the component.
+    ///
+    /// This constant is used to match the attribute to the corresponding property.
+    /// Each implementor of this trait must provide a unique keyword for its type.
+    const KEYWORD : &'static str;
+  }
+
 }
 
 #[ doc( inline ) ]
@@ -135,25 +169,35 @@ pub mod orphan
 }
 
 /// Exposed namespace of the module.
+#[ allow( unused_imports ) ]
 pub mod exposed
 {
-  pub use super::protected as attr_prop;
+  use super::*;
+  pub use super::super::attr_prop;
+
+  // pub use super::protected as attr_prop;
+
   #[ doc( inline ) ]
   #[ allow( unused_imports ) ]
   pub use super::prelude::*;
+
   #[ doc( inline ) ]
   #[ allow( unused_imports ) ]
   pub use super::
   {
 
+    private::AttributePropertyComponent,
+
     singletone::AttributePropertySingletone,
     singletone::AttributePropertySingletoneMarker,
     singletone_optional::AttributePropertyOptionalSingletone,
     singletone_optional::AttributePropertyOptionalSingletoneMarker,
+
     boolean::AttributePropertyBoolean,
     boolean::AttributePropertyBooleanMarker,
     boolean_optional::AttributePropertyOptionalBoolean,
     boolean_optional::AttributePropertyOptionalBooleanMarker,
+
     syn::AttributePropertySyn,
     syn::AttributePropertySynMarker,
     syn_optional::AttributePropertyOptionalSyn,
diff --git a/module/core/macro_tools/src/attr_prop/boolean.rs b/module/core/macro_tools/src/attr_prop/boolean.rs
index 4472b3ae42..fa786b990d 100644
--- a/module/core/macro_tools/src/attr_prop/boolean.rs
+++ b/module/core/macro_tools/src/attr_prop/boolean.rs
@@ -4,7 +4,7 @@
 //!
 
 use crate::*;
-use former_types::Assign;
+// use former_types::Assign;
 
 /// Default marker for `AttributePropertyBoolean`.
 /// Used if no marker is defined as parameter.
diff --git a/module/core/macro_tools/src/attr_prop/boolean_optional.rs b/module/core/macro_tools/src/attr_prop/boolean_optional.rs
index 680803f4c8..35f6f4f081 100644
--- a/module/core/macro_tools/src/attr_prop/boolean_optional.rs
+++ b/module/core/macro_tools/src/attr_prop/boolean_optional.rs
@@ -4,7 +4,8 @@
 //!
 
 use crate::*;
-use former_types::Assign;
+use components::Assign;
+//xxx
 
 /// Default marker for `AttributePropertyOptionalSingletone`.
 /// Used if no marker is defined as parameter.
diff --git a/module/core/macro_tools/src/attr_prop/singletone.rs b/module/core/macro_tools/src/attr_prop/singletone.rs
index 1d55d9ac7c..0e6970bdd0 100644
--- a/module/core/macro_tools/src/attr_prop/singletone.rs
+++ b/module/core/macro_tools/src/attr_prop/singletone.rs
@@ -12,7 +12,7 @@
 //! This is useful for attributes that need to enable or disable features or flags.
 
 use crate::*;
-use former_types::Assign;
+// use former_types::Assign;
 
 /// Default marker for `AttributePropertySingletone`.
 /// Used if no marker is defined as parameter.
diff --git a/module/core/macro_tools/src/attr_prop/singletone_optional.rs b/module/core/macro_tools/src/attr_prop/singletone_optional.rs
index 39c3dd9940..7d500cc94f 100644
--- a/module/core/macro_tools/src/attr_prop/singletone_optional.rs
+++ b/module/core/macro_tools/src/attr_prop/singletone_optional.rs
@@ -14,7 +14,7 @@
 //! This is useful for attributes that need to enable or disable features or flags.
 
 use crate::*;
-use former_types::Assign;
+// use former_types::Assign;
 
 /// Default marker for `AttributePropertyOptionalSingletone`.
 /// Used if no marker is defined as parameter.
diff --git a/module/core/macro_tools/src/attr_prop/syn.rs b/module/core/macro_tools/src/attr_prop/syn.rs
index c60a21cfdd..183ead1a3a 100644
--- a/module/core/macro_tools/src/attr_prop/syn.rs
+++ b/module/core/macro_tools/src/attr_prop/syn.rs
@@ -3,7 +3,7 @@
 //!
 
 use crate::*;
-use former_types::Assign;
+// use former_types::Assign;
 
 /// Default marker for `AttributePropertySyn`.
 /// Used if no marker is defined as parameter.
diff --git a/module/core/macro_tools/src/attr_prop/syn_optional.rs b/module/core/macro_tools/src/attr_prop/syn_optional.rs
index d595e9496a..4e5bba2783 100644
--- a/module/core/macro_tools/src/attr_prop/syn_optional.rs
+++ b/module/core/macro_tools/src/attr_prop/syn_optional.rs
@@ -3,7 +3,7 @@
 //!
 
 use crate::*;
-use former_types::Assign;
+// use former_types::Assign;
 
 /// Default marker for `AttributePropertyOptionalSyn`.
 /// Used if no marker is defined as parameter.
diff --git a/module/core/macro_tools/src/components.rs b/module/core/macro_tools/src/components.rs
new file mode 100644
index 0000000000..c4341873d2
--- /dev/null
+++ b/module/core/macro_tools/src/components.rs
@@ -0,0 +1,70 @@
+//!
+//! Compile-time const expressions.
+//!
+
+/// Internal namespace.
+pub( crate ) mod private
+{
+}
+
+/// Compile-time const expressions.
+#[ doc( inline ) ]
+#[ allow( unused_imports ) ]
+pub use protected::*;
+
+/// Protected namespace of the module.
+pub mod protected
+{
+  #[ doc( inline ) ]
+  #[ allow( unused_imports ) ]
+  pub use super::orphan::*;
+  #[ doc( inline ) ]
+  #[ allow( unused_imports ) ]
+  pub use super::private::
+  {
+  };
+  #[ doc( inline ) ]
+  #[ allow( unused_imports ) ]
+  pub use ::former_types::protected::*;
+}
+
+/// Orphan namespace of the module.
+pub mod orphan
+{
+  #[ doc( inline ) ]
+  #[ allow( unused_imports ) ]
+  pub use super::exposed::*;
+}
+
+/// Exposed namespace of the module.
+#[ allow( unused_imports ) ]
+pub mod exposed
+{
+  use super::*;
+  pub use super::super::components;
+
+  #[ doc( inline ) ]
+  #[ allow( unused_imports ) ]
+  pub use super::prelude::*;
+
+  #[ doc( inline ) ]
+  #[ allow( unused_imports ) ]
+  pub use ::former_types::exposed::*;
+
+  #[ doc( inline ) ]
+  #[ allow( unused_imports ) ]
+  pub use super::private::
+  {
+  };
+
+}
+
+/// Prelude to use essentials: `use my_module::prelude::*`.
+pub mod prelude
+{
+
+  #[ doc( inline ) ]
+  #[ allow( unused_imports ) ]
+  pub use ::former_types::prelude::*;
+
+}
diff --git a/module/core/macro_tools/src/container_kind.rs b/module/core/macro_tools/src/container_kind.rs
index a516594e47..8d0886a026 100644
--- a/module/core/macro_tools/src/container_kind.rs
+++ b/module/core/macro_tools/src/container_kind.rs
@@ -127,9 +127,13 @@ pub mod orphan
 }
 
 /// Exposed namespace of the module.
+#[ allow( unused_imports ) ]
 pub mod exposed
 {
-  pub use super::protected as container_kind;
+  use super::*;
+  pub use super::super::container_kind;
+
+  // pub use super::protected as container_kind;
 
   #[ doc( inline ) ]
   #[ allow( unused_imports ) ]
diff --git a/module/core/macro_tools/src/ct.rs b/module/core/macro_tools/src/ct.rs
new file mode 100644
index 0000000000..bb4420ad8b
--- /dev/null
+++ b/module/core/macro_tools/src/ct.rs
@@ -0,0 +1,63 @@
+//!
+//! Compile-time tools.
+//!
+
+/// Internal namespace.
+pub( crate ) mod private
+{
+}
+
+/// Compile-time const expressions for strings.
+pub mod str;
+
+/// Compile-time tools.
+#[ doc( inline ) ]
+#[ allow( unused_imports ) ]
+pub use protected::*;
+
+/// Protected namespace of the module.
+pub mod protected
+{
+  #[ doc( inline ) ]
+  #[ allow( unused_imports ) ]
+  pub use super::orphan::*;
+  #[ doc( inline ) ]
+  #[ allow( unused_imports ) ]
+  pub use super::private::
+  {
+  };
+  #[ doc( inline ) ]
+  #[ allow( unused_imports ) ]
+  pub use ::const_format::*;
+}
+
+/// Orphan namespace of the module.
+pub mod orphan
+{
+  #[ doc( inline ) ]
+  #[ allow( unused_imports ) ]
+  pub use super::exposed::*;
+}
+
+/// Exposed namespace of the module.
+#[ allow( unused_imports ) ]
+pub mod exposed
+{
+  use super::*;
+  pub use super::super::ct;
+
+  // pub use super::protected as ct;
+  #[ doc( inline ) ]
+  #[ allow( unused_imports ) ]
+  pub use super::prelude::*;
+  #[ doc( inline ) ]
+  #[ allow( unused_imports ) ]
+  pub use super::private::
+  {
+  };
+}
+
+/// Prelude to use essentials: `use my_module::prelude::*`.
+pub mod prelude
+{
+}
diff --git a/module/core/macro_tools/src/ct/str.rs b/module/core/macro_tools/src/ct/str.rs
new file mode 100644
index 0000000000..f0fd4271e2
--- /dev/null
+++ b/module/core/macro_tools/src/ct/str.rs
@@ -0,0 +1,8 @@
+
+#[ doc( inline ) ]
+#[ allow( unused_imports ) ]
+pub use ::const_format::
+{
+  concatcp as concat,
+  formatcp as format,
+};
diff --git a/module/core/macro_tools/src/derive.rs b/module/core/macro_tools/src/derive.rs
index 13db46db90..8d0ab26396 100644
--- a/module/core/macro_tools/src/derive.rs
+++ b/module/core/macro_tools/src/derive.rs
@@ -75,9 +75,11 @@ pub mod orphan
 }
 
 /// Exposed namespace of the module.
+#[ allow( unused_imports ) ]
 pub mod exposed
 {
-  pub use super::protected as derive;
+  use super::*;
+  pub use super::super::derive;
 
   #[ doc( inline ) ]
   #[ allow( unused_imports ) ]
diff --git a/module/core/macro_tools/src/diag.rs b/module/core/macro_tools/src/diag.rs
index 10a7e9e0a5..851c6d13b2 100644
--- a/module/core/macro_tools/src/diag.rs
+++ b/module/core/macro_tools/src/diag.rs
@@ -389,9 +389,11 @@ pub use protected::*;
 /// Protected namespace of the module.
 pub mod protected
 {
+
   #[ doc( inline ) ]
   #[ allow( unused_imports ) ]
   pub use super::orphan::*;
+
 }
 
 /// Parented namespace of the module.
@@ -400,12 +402,22 @@ pub mod orphan
   #[ doc( inline ) ]
   #[ allow( unused_imports ) ]
   pub use super::exposed::*;
+
+  #[ doc( inline ) ]
+  #[ allow( unused_imports ) ]
+  pub use super::private::
+  {
+    Result,
+  };
+
 }
 
 /// Exposed namespace of the module.
+#[ allow( unused_imports ) ]
 pub mod exposed
 {
-  pub use super::protected as diag;
+  use super::*;
+  pub use super::super::diag;
 
   #[ doc( inline ) ]
   #[ allow( unused_imports ) ]
@@ -415,7 +427,6 @@ pub mod exposed
   #[ allow( unused_imports ) ]
   pub use super::private::
   {
-    Result,
     indentation,
     report_format,
     report_print,
diff --git a/module/core/macro_tools/src/drop.rs b/module/core/macro_tools/src/drop.rs
index f6e5814e48..61268d454c 100644
--- a/module/core/macro_tools/src/drop.rs
+++ b/module/core/macro_tools/src/drop.rs
@@ -82,9 +82,12 @@ pub mod orphan
 }
 
 /// Exposed namespace of the module.
+#[ allow( unused_imports ) ]
 pub mod exposed
 {
-  pub use super::protected as drop;
+  use super::*;
+  pub use super::super::drop;
+
   #[ doc( inline ) ]
   #[ allow( unused_imports ) ]
   pub use super::prelude::*;
diff --git a/module/core/macro_tools/src/equation.rs b/module/core/macro_tools/src/equation.rs
index 36bab1ccab..2756bcf51f 100644
--- a/module/core/macro_tools/src/equation.rs
+++ b/module/core/macro_tools/src/equation.rs
@@ -140,9 +140,12 @@ pub mod orphan
 }
 
 /// Exposed namespace of the module.
+#[ allow( unused_imports ) ]
 pub mod exposed
 {
-  pub use super::protected as equation;
+  use super::*;
+  pub use super::super::equation;
+
   #[ doc( inline ) ]
   #[ allow( unused_imports ) ]
   pub use super::prelude::*;
diff --git a/module/core/macro_tools/src/generic_args.rs b/module/core/macro_tools/src/generic_args.rs
index a2a175989b..6d74a0a5ff 100644
--- a/module/core/macro_tools/src/generic_args.rs
+++ b/module/core/macro_tools/src/generic_args.rs
@@ -178,9 +178,12 @@ pub mod orphan
 }
 
 /// Exposed namespace of the module.
+#[ allow( unused_imports ) ]
 pub mod exposed
 {
-  pub use super::protected as generic_args;
+  use super::*;
+  pub use super::super::generic_args;
+
   #[ doc( inline ) ]
   #[ allow( unused_imports ) ]
   pub use super::
diff --git a/module/core/macro_tools/src/generic_params.rs b/module/core/macro_tools/src/generic_params.rs
index 3729237876..710aea054c 100644
--- a/module/core/macro_tools/src/generic_params.rs
+++ b/module/core/macro_tools/src/generic_params.rs
@@ -6,6 +6,8 @@
 pub( crate ) mod private
 {
   use crate::*;
+  use crate::IterTrait;
+  // use iter_tools::IterTrait;
 
   /// A `GenericsWithWhere` struct to handle the parsing of Rust generics with an explicit `where` clause.
   ///
@@ -542,9 +544,12 @@ pub mod orphan
 }
 
 /// Exposed namespace of the module.
+#[ allow( unused_imports ) ]
 pub mod exposed
 {
-  pub use super::protected as generic_params;
+  use super::*;
+  pub use super::super::generic_params;
+
   #[ doc( inline ) ]
   #[ allow( unused_imports ) ]
   pub use super::
diff --git a/module/core/macro_tools/src/item.rs b/module/core/macro_tools/src/item.rs
index 2bd19814b2..55e43aee78 100644
--- a/module/core/macro_tools/src/item.rs
+++ b/module/core/macro_tools/src/item.rs
@@ -86,7 +86,7 @@ pub( crate ) mod private
 #[ allow( unused_imports ) ]
 pub use protected::*;
 
-// qqq : zzz : make sure documentation look good. generate, review and fix every file
+// qqq : xxx : make sure documentation look good. generate, review and fix every file
 /// This module provides various utilities and namespaces for working with `syn::Item`, specifically focusing on
 /// ensuring syntactical correctness and managing different visibility levels within the code. It includes functions
 /// to manipulate the structure of items, handle different kinds of fields, and provide a structured approach to
@@ -118,10 +118,12 @@ pub mod orphan
 }
 
 /// Exposed namespace of the module.
+#[ allow( unused_imports ) ]
 pub mod exposed
 {
-  // pub use super::protected as item;
-  pub use super::protected as item;
+  use super::*;
+  pub use super::super::item;
+
   #[ doc( inline ) ]
   #[ allow( unused_imports ) ]
   pub use super::
diff --git a/module/core/macro_tools/src/item_struct.rs b/module/core/macro_tools/src/item_struct.rs
index f5a33a21c2..45ec77b724 100644
--- a/module/core/macro_tools/src/item_struct.rs
+++ b/module/core/macro_tools/src/item_struct.rs
@@ -6,10 +6,12 @@
 pub( crate ) mod private
 {
   use crate::*;
+  // use iter_tools::{ IterTrait, BoxedIter };
 
   /// Extracts the types of each field into a vector.
   pub fn field_types< 'a >( t : &'a syn::ItemStruct )
-  -> impl IterTrait< 'a, &'a syn::Type >
+  ->
+  impl IterTrait< 'a, &'a syn::Type >
   // -> std::iter::Map
   // <
   //   syn::punctuated::Iter< 'a, syn::Field >,
@@ -88,7 +90,6 @@ pub mod protected
   #[ allow( unused_imports ) ]
   pub use super::private::
   {
-    // fields_many,
     field_types,
     field_names,
     first_field_type,
@@ -105,9 +106,12 @@ pub mod orphan
 }
 
 /// Exposed namespace of the module.
+#[ allow( unused_imports ) ]
 pub mod exposed
 {
-  pub use super::protected as item_struct;
+  use super::*;
+  pub use super::super::item_struct;
+
   #[ doc( inline ) ]
   #[ allow( unused_imports ) ]
   pub use super::prelude::*;
diff --git a/module/core/macro_tools/src/iter.rs b/module/core/macro_tools/src/iter.rs
index f3553f773b..6b5e5851ce 100644
--- a/module/core/macro_tools/src/iter.rs
+++ b/module/core/macro_tools/src/iter.rs
@@ -1,158 +1,17 @@
 //!
-//! Iterators.
+//! Tailored iterator.
 //!
 
 /// Internal namespace.
 pub( crate ) mod private
 {
-  use clone_dyn_types::CloneDyn;
-
-  /// Trait that encapsulates an iterator with specific characteristics, tailored for use with the `syn` crate and implemetning `CloneDyn`.
-  ///
-  /// The `_IterTrait` trait is designed to represent iterators that may yield references to items ( `&'a T` ) within the `syn` crate.
-  /// These iterators must also implement the `ExactSizeIterator` and `DoubleEndedIterator` traits.
-  /// This combination ensures that the iterator can:
-  /// - Provide an exact size hint ( `ExactSizeIterator` ),
-  /// - Be traversed from both ends ( `DoubleEndedIterator` ).
-  ///
-  /// Additionally, the iterator must implement the `CloneDyn` trait, which allows cloning of trait objects.
-  ///
-  /// # Example
-  /// ```rust
-  /// use macro_tools::_IterTrait;
-  ///
-  /// // Example struct that implements Iterator, ExactSizeIterator, DoubleEndedIterator, and CloneDyn.
-  /// #[ derive( Clone ) ]
-  /// struct MyIterator
-  /// {
-  ///   // internal fields
-  /// }
-  ///
-  /// impl Iterator for MyIterator
-  /// {
-  ///   type Item = i32;
-  ///
-  ///   fn next( &mut self ) -> Option< Self::Item >
-  ///   {
-  ///     // implementation
-  ///     Some( 1 )
-  ///   }
-  /// }
-  ///
-  /// impl ExactSizeIterator for MyIterator
-  /// {
-  ///   fn len( &self ) -> usize
-  ///   {
-  ///     // implementation
-  ///     1
-  ///   }
-  /// }
-  ///
-  /// impl DoubleEndedIterator for MyIterator
-  /// {
-  ///   fn next_back( &mut self ) -> Option< Self::Item >
-  ///   {
-  ///     // implementation
-  ///     Some( 1 )
-  ///   }
-  /// }
-  ///
-  /// ```
-  pub trait _IterTrait< 'a, T >
-  where
-    T : 'a,
-    Self : Iterator< Item = T > + ExactSizeIterator< Item = T > + DoubleEndedIterator,
-    Self : CloneDyn,
-  {
-  }
-
-  impl< 'a, T, I > _IterTrait< 'a, T > for I
-  where
-    T : 'a,
-    Self : Iterator< Item = T > + ExactSizeIterator< Item = T > + DoubleEndedIterator,
-    Self : CloneDyn,
-  {
-  }
-
-  /// Implement `Clone` for boxed `_IterTrait` trait objects.
-  ///
-  /// This allows cloning of boxed iterators that implement `_IterTrait`.
-  #[ allow( non_local_definitions ) ]
-  impl< 'c, T > Clone for Box< dyn _IterTrait< 'c, T > + 'c >
-  {
-    #[ inline ]
-    fn clone( &self ) -> Self
-    {
-      clone_dyn_types::clone_into_box( &**self )
-    }
-  }
-
-  #[ allow( non_local_definitions ) ]
-  impl< 'c, T > Clone for Box< dyn _IterTrait< 'c, T > + Send + 'c >
-  {
-    #[ inline ]
-    fn clone( &self ) -> Self
-    {
-      clone_dyn_types::clone_into_box( &**self )
-    }
-  }
-
-  #[ allow( non_local_definitions ) ]
-  impl< 'c, T > Clone for Box< dyn _IterTrait< 'c, T > + Sync + 'c >
-  {
-    #[ inline ]
-    fn clone( &self ) -> Self
-    {
-      clone_dyn_types::clone_into_box( &**self )
-    }
-  }
-
-  #[ allow( non_local_definitions ) ]
-  impl< 'c, T > Clone for Box< dyn _IterTrait< 'c, T > + Send + Sync + 'c >
-  {
-    #[ inline ]
-    fn clone( &self ) -> Self
-    {
-      clone_dyn_types::clone_into_box( &**self )
-    }
-  }
-
-  /// Type alias for boxed `_IterTrait` trait objects.
-  ///
-  /// Prefer `BoxedIter` over `impl _IterTrait` when using trait objects ( `dyn _IterTrait` ) because the concrete type in return is less restrictive than `impl _IterTrait`.
-  ///
-  pub type BoxedIter< 'a, T > = Box< dyn _IterTrait< 'a, T > + 'a >;
-
-  /// Trait that encapsulates a clonable iterator with specific characteristics, tailored for use with the `syn` crate.
-  ///
-  /// The `IterTrait` trait is designed to represent iterators that may yield references to items ( `&'a T` ) within the `syn` crate.
-  /// These iterators must also implement the `ExactSizeIterator`, `DoubleEndedIterator`, and `Clone` traits.
-  /// This combination ensures that the iterator can:
-  /// - Provide an exact size hint ( `ExactSizeIterator` ),
-  /// - Be traversed from both ends ( `DoubleEndedIterator` ),
-  /// - Be clonable ( `Clone` ).
-  ///
-  pub trait IterTrait< 'a, T >
-  where
-    T : 'a,
-    Self : _IterTrait< 'a, T > + Clone,
-  {
-  }
-
-  impl< 'a, T, I > IterTrait< 'a, T > for I
-  where
-    T : 'a,
-    Self : _IterTrait< 'a, T > + Clone,
-  {
-  }
-
 }
 
 #[ doc( inline ) ]
 #[ allow( unused_imports ) ]
 pub use protected::*;
 
-/// Protected namespace of the module.
+/// Tailoted iterator.
 pub mod protected
 {
   #[ doc( inline ) ]
@@ -160,9 +19,7 @@ pub mod protected
   pub use super::orphan::*;
   #[ doc( inline ) ]
   #[ allow( unused_imports ) ]
-  pub use super::private::
-  {
-  };
+  pub use iter_tools::protected::*;
 }
 
 /// Orphan namespace of the module.
@@ -174,23 +31,28 @@ pub mod orphan
 }
 
 /// Exposed namespace of the module.
+#[ allow( unused_imports ) ]
 pub mod exposed
 {
-  pub use super::protected as iter;
+  use super::*;
+  // pub use super::super::iter;
+
   #[ doc( inline ) ]
   #[ allow( unused_imports ) ]
   pub use super::prelude::*;
+
   #[ doc( inline ) ]
   #[ allow( unused_imports ) ]
-  pub use super::private::
-  {
-    _IterTrait,
-    IterTrait,
-    BoxedIter,
-  };
+  pub use iter_tools::exposed::*;
+
 }
 
 /// Prelude to use essentials: `use my_module::prelude::*`.
 pub mod prelude
 {
+
+  #[ doc( inline ) ]
+  #[ allow( unused_imports ) ]
+  pub use iter_tools::prelude::*;
+
 }
diff --git a/module/core/macro_tools/src/kw.rs b/module/core/macro_tools/src/kw.rs
new file mode 100644
index 0000000000..f7eb1c9c05
--- /dev/null
+++ b/module/core/macro_tools/src/kw.rs
@@ -0,0 +1,69 @@
+//!
+//! Keywords
+//!
+
+/// Internal namespace.
+pub( crate ) mod private
+{
+  // use crate::*;
+
+  const KEYWORDS : &[ &str ] =
+  &[
+    "as", "break", "const", "continue", "crate", "else", "enum", "extern", "false", "fn",
+    "for", "if", "impl", "in", "let", "loop", "match", "mod", "move", "mut", "pub", "ref",
+    "return", "self", "Self", "static", "struct", "super", "trait", "true", "type", "unsafe",
+    "use", "where", "while", "async", "await", "dyn",
+  ];
+
+  // qqq : zzz : cover by tests
+  /// Check is string a keyword.
+  pub fn is( src : &str ) -> bool
+  {
+    KEYWORDS.contains( &src )
+  }
+
+}
+
+#[ doc( inline ) ]
+#[ allow( unused_imports ) ]
+pub use protected::*;
+
+/// Protected namespace of the module.
+pub mod protected
+{
+  #[ doc( inline ) ]
+  #[ allow( unused_imports ) ]
+  pub use super::orphan::*;
+}
+
+/// Orphan namespace of the module.
+pub mod orphan
+{
+  #[ doc( inline ) ]
+  #[ allow( unused_imports ) ]
+  pub use super::exposed::*;
+}
+
+/// Exposed namespace of the module.
+#[ allow( unused_imports ) ]
+pub mod exposed
+{
+  use super::*;
+  pub use super::super::kw;
+
+  #[ doc( inline ) ]
+  #[ allow( unused_imports ) ]
+  pub use super::prelude::*;
+  #[ doc( inline ) ]
+  #[ allow( unused_imports ) ]
+  pub use super::private::
+  {
+    is,
+  };
+}
+
+/// Prelude to use essentials: `use my_module::prelude::*`.
+pub mod prelude
+{
+}
+
diff --git a/module/core/macro_tools/src/lib.rs b/module/core/macro_tools/src/lib.rs
index 85bafc8eb4..6efba82cb5 100644
--- a/module/core/macro_tools/src/lib.rs
+++ b/module/core/macro_tools/src/lib.rs
@@ -20,44 +20,66 @@
 // exposed
 // Exposed namespace of the module.
 
-/// Modular files.
-#[ cfg( feature = "enabled" ) ]
-#[ path = "." ]
-mod file
-{
-  // use super::*;
-  pub mod attr;
-  pub mod attr_prop;
-  pub mod container_kind;
-  pub mod derive;
-  pub mod diag;
-  pub mod drop;
-  pub mod equation;
-  pub mod generic_args;
-  pub mod generic_params;
-  pub mod item;
-  pub mod item_struct;
-  pub mod iter;
-  pub mod name;
-  pub mod phantom;
-  pub mod punctuated;
-  pub mod quantifier;
-  pub mod struct_like;
-  pub mod tokens;
-  pub mod typ;
-}
+#[ cfg( all( feature = "enabled", feature = "attr" ) ) ]
+pub mod attr;
+#[ cfg( all( feature = "enabled", feature = "attr_prop" ) ) ]
+pub mod attr_prop;
+#[ cfg( all( feature = "enabled", feature = "components" ) ) ]
+pub mod components;
+#[ cfg( all( feature = "enabled", feature = "ct" ) ) ]
+pub mod ct;
+#[ cfg( all( feature = "enabled", feature = "container_kind" ) ) ]
+pub mod container_kind;
+#[ cfg( all( feature = "enabled", feature = "derive" ) ) ]
+pub mod derive;
+#[ cfg( all( feature = "enabled", feature = "diag" ) ) ]
+pub mod diag;
+#[ cfg( all( feature = "enabled", feature = "drop" ) ) ]
+pub mod drop;
+#[ cfg( all( feature = "enabled", feature = "equation" ) ) ]
+pub mod equation;
+#[ cfg( all( feature = "enabled", feature = "generic_args" ) ) ]
+pub mod generic_args;
+#[ cfg( all( feature = "enabled", feature = "generic_params" ) ) ]
+pub mod generic_params;
+#[ cfg( all( feature = "enabled", feature = "item" ) ) ]
+pub mod item;
+#[ cfg( all( feature = "enabled", feature = "item_struct" ) ) ]
+pub mod item_struct;
+#[ cfg( all( feature = "enabled", feature = "name" ) ) ]
+pub mod name;
+#[ cfg( all( feature = "enabled", feature = "kw" ) ) ]
+pub mod kw;
+#[ cfg( all( feature = "enabled", feature = "phantom" ) ) ]
+pub mod phantom;
+#[ cfg( all( feature = "enabled", feature = "punctuated" ) ) ]
+pub mod punctuated;
+#[ cfg( all( feature = "enabled", feature = "quantifier" ) ) ]
+pub mod quantifier;
+#[ cfg( all( feature = "enabled", feature = "struct_like" ) ) ]
+pub mod struct_like;
+#[ cfg( all( feature = "enabled", feature = "tokens" ) ) ]
+pub mod tokens;
+#[ cfg( all( feature = "enabled", feature = "typ" ) ) ]
+pub mod typ;
+
+#[ cfg( all( feature = "enabled" ) ) ]
+pub mod iter;
 
 ///
 /// Dependencies of the module.
 ///
 
 #[ cfg( feature = "enabled" ) ]
+#[ allow( unused_imports ) ]
 pub mod dependency
 {
   pub use ::syn;
   pub use ::quote;
   pub use ::proc_macro2;
   pub use ::interval_adapter;
+  pub use ::clone_dyn_types;
+  pub use ::former_types;
 }
 
 #[ doc( inline ) ]
@@ -65,110 +87,218 @@ pub mod dependency
 #[ cfg( feature = "enabled" ) ]
 pub use protected::*;
 
+// qqq : put every file of the first level under feature
+
 /// Protected namespace of the module.
 #[ cfg( feature = "enabled" ) ]
+#[ allow( unused_imports ) ]
 pub mod protected
 {
-  #[ doc( inline ) ]
-  #[ allow( unused_imports ) ]
-  pub use super::
+
+  mod _all
   {
-    orphan::*,
-  };
+    use super::super::*;
+    pub use orphan::*;
+
+    #[ cfg( feature = "attr" ) ]
+    pub use attr::orphan::*;
+    #[ cfg( feature = "attr_prop" ) ]
+    pub use attr_prop::orphan::*;
+    #[ cfg( feature = "components" ) ]
+    pub use components::orphan::*;
+    #[ cfg( feature = "container_kind" ) ]
+    pub use container_kind::orphan::*;
+    #[ cfg( feature = "ct" ) ]
+    pub use ct::orphan::*;
+    #[ cfg( feature = "derive" ) ]
+    pub use derive::orphan::*;
+    #[ cfg( feature = "diag" ) ]
+    pub use diag::orphan::*;
+    #[ cfg( feature = "drop" ) ]
+    pub use drop::orphan::*;
+    #[ cfg( feature = "equation" ) ]
+    pub use equation::orphan::*;
+    #[ cfg( feature = "generic_args" ) ]
+    pub use generic_args::orphan::*;
+    #[ cfg( feature = "generic_params" ) ]
+    pub use generic_params::orphan::*;
+    #[ cfg( feature = "item" ) ]
+    pub use item::orphan::*;
+    #[ cfg( feature = "item_struct" ) ]
+    pub use item_struct::orphan::*;
+    #[ cfg( feature = "name" ) ]
+    pub use name::orphan::*;
+    #[ cfg( feature = "kw" ) ]
+    pub use kw::orphan::*;
+    #[ cfg( feature = "phantom" ) ]
+    pub use phantom::orphan::*;
+    #[ cfg( feature = "punctuated" ) ]
+    pub use punctuated::orphan::*;
+    #[ cfg( feature = "quantifier" ) ]
+    pub use quantifier::orphan::*;
+    #[ cfg( feature = "struct_like" ) ]
+    pub use struct_like::orphan::*;
+    #[ cfg( feature = "tokens" ) ]
+    pub use tokens::orphan::*;
+    #[ cfg( feature = "typ" ) ]
+    pub use typ::orphan::*;
+
+    pub use iter::orphan::*;
+
+  }
+
   #[ doc( inline ) ]
-  #[ allow( unused_imports ) ]
-  pub use super::file::
-  {
-    attr::orphan::*,
-    attr_prop::orphan::*,
-    container_kind::orphan::*,
-    derive::orphan::*,
-    diag::orphan::*,
-    drop::orphan::*,
-    equation::orphan::*,
-    generic_args::orphan::*,
-    generic_params::orphan::*,
-    item::orphan::*,
-    item_struct::orphan::*,
-    iter::orphan::*,
-    name::orphan::*,
-    phantom::orphan::*,
-    punctuated::orphan::*,
-    quantifier::orphan::*,
-    struct_like::orphan::*,
-    tokens::orphan::*,
-    typ::orphan::*,
-  };
+  pub use _all::*;
+
 }
 
 /// Parented namespace of the module.
 #[ cfg( feature = "enabled" ) ]
+  #[ allow( unused_imports ) ]
 pub mod orphan
 {
+
+  // xxx : remove pub?
+  mod _all
+  {
+    use super::super::*;
+    pub use exposed::*;
+  }
+
   #[ doc( inline ) ]
-  #[ allow( unused_imports ) ]
-  pub use super::exposed::*;
+  pub use _all::*;
+
 }
 
 /// Exposed namespace of the module.
 #[ cfg( feature = "enabled" ) ]
+#[ allow( unused_imports ) ]
 pub mod exposed
 {
+  use super::*;
 
-  #[ doc( inline ) ]
-  #[ allow( unused_imports ) ]
-  pub use quote::
+  mod _all
   {
-    format_ident,
-    quote,
-    quote_spanned,
-  };
+    use super::super::*;
+    pub use prelude::*;
 
-  #[ doc( inline ) ]
-  #[ allow( unused_imports ) ]
-  pub use super::
-  {
-    prelude::*,
-  };
+    #[ cfg( feature = "attr" ) ]
+    pub use attr::exposed::*;
+    #[ cfg( feature = "attr_prop" ) ]
+    pub use attr_prop::exposed::*;
+    #[ cfg( feature = "components" ) ]
+    pub use components::exposed::*;
+    #[ cfg( feature = "container_kind" ) ]
+    pub use container_kind::exposed::*;
+    #[ cfg( feature = "ct" ) ]
+    pub use ct::exposed::*;
+    #[ cfg( feature = "derive" ) ]
+    pub use derive::exposed::*;
+    #[ cfg( feature = "diag" ) ]
+    pub use diag::exposed::*;
+    #[ cfg( feature = "drop" ) ]
+    pub use drop::exposed::*;
+    #[ cfg( feature = "equation" ) ]
+    pub use equation::exposed::*;
+    #[ cfg( feature = "generic_args" ) ]
+    pub use generic_args::exposed::*;
+    #[ cfg( feature = "generic_params" ) ]
+    pub use generic_params::exposed::*;
+    #[ cfg( feature = "item" ) ]
+    pub use item::exposed::*;
+    #[ cfg( feature = "item_struct" ) ]
+    pub use item_struct::exposed::*;
+    #[ cfg( feature = "name" ) ]
+    pub use name::exposed::*;
+    #[ cfg( feature = "kw" ) ]
+    pub use kw::exposed::*;
+    #[ cfg( feature = "phantom" ) ]
+    pub use phantom::exposed::*;
+    #[ cfg( feature = "punctuated" ) ]
+    pub use punctuated::exposed::*;
+    #[ cfg( feature = "quantifier" ) ]
+    pub use quantifier::exposed::*;
+    #[ cfg( feature = "struct_like" ) ]
+    pub use struct_like::exposed::*;
+    #[ cfg( feature = "tokens" ) ]
+    pub use tokens::exposed::*;
+    #[ cfg( feature = "typ" ) ]
+    pub use typ::exposed::*;
+
+    pub use iter::exposed::*;
+
+  }
 
   #[ doc( inline ) ]
-  #[ allow( unused_imports ) ]
-  pub use super::file::
-  {
-    attr::exposed::*,
-    attr_prop::exposed::*,
-    container_kind::exposed::*,
-    derive::orphan::*,
-    diag::exposed::*,
-    drop::exposed::*,
-    equation::exposed::*,
-    generic_args::exposed::*,
-    generic_params::exposed::*,
-    item::exposed::*,
-    item_struct::exposed::*,
-    iter::exposed::*,
-    name::exposed::*,
-    phantom::exposed::*,
-    punctuated::exposed::*,
-    quantifier::exposed::*,
-    struct_like::exposed::*,
-    tokens::exposed::*,
-    typ::exposed::*,
-  };
+  pub use _all::*;
 
 }
 
 /// Prelude to use essentials: `use my_module::prelude::*`.
 #[ cfg( feature = "enabled" ) ]
+#[ allow( unused_imports ) ]
 pub mod prelude
 {
 
+  mod _all
+  {
+    use super::super::*;
+    // pub use prelude::*;
+
+    #[ cfg( feature = "attr" ) ]
+    pub use attr::prelude::*;
+    #[ cfg( feature = "attr_prop" ) ]
+    pub use attr_prop::prelude::*;
+    #[ cfg( feature = "components" ) ]
+    pub use components::prelude::*;
+    #[ cfg( feature = "container_kind" ) ]
+    pub use container_kind::prelude::*;
+    #[ cfg( feature = "ct" ) ]
+    pub use ct::prelude::*;
+    #[ cfg( feature = "derive" ) ]
+    pub use derive::prelude::*;
+    #[ cfg( feature = "diag" ) ]
+    pub use diag::prelude::*;
+    #[ cfg( feature = "drop" ) ]
+    pub use drop::prelude::*;
+    #[ cfg( feature = "equation" ) ]
+    pub use equation::prelude::*;
+    #[ cfg( feature = "generic_args" ) ]
+    pub use generic_args::prelude::*;
+    #[ cfg( feature = "generic_params" ) ]
+    pub use generic_params::prelude::*;
+    #[ cfg( feature = "item" ) ]
+    pub use item::prelude::*;
+    #[ cfg( feature = "item_struct" ) ]
+    pub use item_struct::prelude::*;
+    #[ cfg( feature = "name" ) ]
+    pub use name::prelude::*;
+    #[ cfg( feature = "kw" ) ]
+    pub use kw::exposed::*;
+    #[ cfg( feature = "phantom" ) ]
+    pub use phantom::prelude::*;
+    #[ cfg( feature = "punctuated" ) ]
+    pub use punctuated::prelude::*;
+    #[ cfg( feature = "quantifier" ) ]
+    pub use quantifier::prelude::*;
+    #[ cfg( feature = "struct_like" ) ]
+    pub use struct_like::prelude::*;
+    #[ cfg( feature = "tokens" ) ]
+    pub use tokens::prelude::*;
+    #[ cfg( feature = "typ" ) ]
+    pub use typ::prelude::*;
+
+    pub use iter::prelude::*;
+
+  }
+
+  #[ doc( inline ) ]
+  pub use _all::*;
+
   #[ doc( inline ) ]
-  #[ allow( unused_imports ) ]
   pub use ::interval_adapter::prelude::*;
 
   #[ doc( inline ) ]
-  #[ allow( unused_imports ) ]
   pub use ::syn;
 
   #[ doc( inline ) ]
@@ -183,13 +313,15 @@ pub mod prelude
   #[ allow( unused_imports ) ]
   pub use ::quote::
   {
+    quote,
     quote as qt,
+    quote_spanned,
     format_ident,
   };
 
-  #[ doc( inline ) ]
-  #[ allow( unused_imports ) ]
-  pub use ::syn::spanned::Spanned;
+  // #[ doc( inline ) ]
+  // #[ allow( unused_imports ) ]
+  // pub use ::syn::spanned::Spanned;
 
   #[ doc( inline ) ]
   #[ allow( unused_imports ) ]
@@ -197,6 +329,7 @@ pub mod prelude
   {
     parse::ParseStream,
     Token,
+    spanned::Spanned,
     braced,
     bracketed,
     custom_keyword,
@@ -209,31 +342,6 @@ pub mod prelude
     parse_quote_spanned as parse_qt_spanned,
   };
 
-  #[ doc( inline ) ]
-  #[ allow( unused_imports ) ]
-  pub use super::file::
-  {
-    attr::prelude::*,
-    attr_prop::prelude::*,
-    container_kind::prelude::*,
-    derive::orphan::*,
-    diag::prelude::*,
-    drop::prelude::*,
-    equation::prelude::*,
-    generic_args::prelude::*,
-    generic_params::prelude::*,
-    item::prelude::*,
-    item_struct::prelude::*,
-    iter::prelude::*,
-    name::prelude::*,
-    phantom::prelude::*,
-    punctuated::prelude::*,
-    quantifier::prelude::*,
-    struct_like::prelude::*,
-    tokens::prelude::*,
-    typ::prelude::*,
-  };
-
 }
 
 // qqq : introduce features. make it smart. discuss list of features before implementing
diff --git a/module/core/macro_tools/src/name.rs b/module/core/macro_tools/src/name.rs
index b88fc03f0a..b7e33aa49d 100644
--- a/module/core/macro_tools/src/name.rs
+++ b/module/core/macro_tools/src/name.rs
@@ -245,9 +245,14 @@ pub mod orphan
 }
 
 /// Exposed namespace of the module.
+#[ allow( unused_imports ) ]
 pub mod exposed
 {
-  pub use super::protected as name;
+  use super::*;
+
+  pub use super::super::name;
+  // pub use super::protected as name;
+
   #[ doc( inline ) ]
   #[ allow( unused_imports ) ]
   pub use super::prelude::*;
diff --git a/module/core/macro_tools/src/phantom.rs b/module/core/macro_tools/src/phantom.rs
index 8f4a24900f..2e45c64928 100644
--- a/module/core/macro_tools/src/phantom.rs
+++ b/module/core/macro_tools/src/phantom.rs
@@ -229,9 +229,14 @@ pub mod orphan
 }
 
 /// Exposed namespace of the module.
+#[ allow( unused_imports ) ]
 pub mod exposed
 {
-  pub use super::protected as phantom;
+  use super::*;
+
+  pub use super::super::phantom;
+  // pub use super::protected as phantom;
+
   #[ doc( inline ) ]
   #[ allow( unused_imports ) ]
   pub use super::
diff --git a/module/core/macro_tools/src/punctuated.rs b/module/core/macro_tools/src/punctuated.rs
index 0eb1eb50dd..838e74cd5d 100644
--- a/module/core/macro_tools/src/punctuated.rs
+++ b/module/core/macro_tools/src/punctuated.rs
@@ -52,9 +52,14 @@ pub mod orphan
 }
 
 /// Exposed namespace of the module.
+#[ allow( unused_imports ) ]
 pub mod exposed
 {
-  pub use super::protected as punctuated;
+  use super::*;
+
+  pub use super::super::punctuated;
+  // pub use super::protected as punctuated;
+
   #[ doc( inline ) ]
   #[ allow( unused_imports ) ]
   pub use super::
diff --git a/module/core/macro_tools/src/quantifier.rs b/module/core/macro_tools/src/quantifier.rs
index 15901b7f89..0f81f9f0b3 100644
--- a/module/core/macro_tools/src/quantifier.rs
+++ b/module/core/macro_tools/src/quantifier.rs
@@ -75,7 +75,7 @@ pub( crate ) mod private
     T1 : Element + syn::parse::Parse,
     T2 : Element + syn::parse::Parse,
   {
-    fn parse( input : ParseStream< '_ > ) -> Result< Self >
+    fn parse( input : ParseStream< '_ > ) -> syn::Result< Self >
     {
       Ok( Self( input.parse()?, input.parse()? ) )
     }
@@ -195,7 +195,7 @@ pub( crate ) mod private
   where
     T : Element + syn::parse::Parse + AsMuchAsPossibleNoDelimiter,
   {
-    fn parse( input : syn::parse::ParseStream< '_ > ) -> Result< Self >
+    fn parse( input : syn::parse::ParseStream< '_ > ) -> syn::Result< Self >
     {
       let mut items = vec![];
       while !input.is_empty()
@@ -214,7 +214,7 @@ pub( crate ) mod private
 //   where
 //     T : Element + WhileDelimiter,
 //   {
-//     fn parse( input : syn::parse::ParseStream< '_ > ) -> Result< Self >
+//     fn parse( input : syn::parse::ParseStream< '_ > ) -> syn::Result< Self >
 //     {
 //       let mut result = Self::new();
 //       loop
@@ -245,7 +245,7 @@ pub( crate ) mod private
   impl syn::parse::Parse
   for Many< AttributesInner >
   {
-    fn parse( input : ParseStream< '_ > ) -> Result< Self >
+    fn parse( input : ParseStream< '_ > ) -> syn::Result< Self >
     {
       let mut result = Self::new();
       loop
@@ -264,7 +264,7 @@ pub( crate ) mod private
   impl syn::parse::Parse
   for Many< AttributesOuter >
   {
-    fn parse( input : ParseStream< '_ > ) -> Result< Self >
+    fn parse( input : ParseStream< '_ > ) -> syn::Result< Self >
     {
       let mut result = Self::new();
       loop
@@ -285,7 +285,7 @@ pub( crate ) mod private
   // impl syn::parse::Parse
   // for Many< syn::Item >
   // {
-  //   fn parse( input : syn::parse::ParseStream< '_ > ) -> Result< Self >
+  //   fn parse( input : syn::parse::ParseStream< '_ > ) -> syn::Result< Self >
   //   {
   //     let mut items = vec![];
   //     while !input.is_empty()
@@ -321,9 +321,14 @@ pub mod orphan
 }
 
 /// Exposed namespace of the module.
+#[ allow( unused_imports ) ]
 pub mod exposed
 {
-  pub use super::protected as quantifier;
+  use super::*;
+
+  pub use super::super::quantifier;
+  // pub use super::protected as quantifier;
+
   #[ doc( inline ) ]
   #[ allow( unused_imports ) ]
   pub use super::prelude::*;
diff --git a/module/core/macro_tools/src/struct_like.rs b/module/core/macro_tools/src/struct_like.rs
index 5a58f5df7d..b851049402 100644
--- a/module/core/macro_tools/src/struct_like.rs
+++ b/module/core/macro_tools/src/struct_like.rs
@@ -6,6 +6,7 @@
 pub( crate ) mod private
 {
   use crate::*;
+  // use iter_tools::{ IterTrait, BoxedIter };
   // use interval_adapter::BoundExt;
 
   /// Enum to encapsulate either a field from a struct or a variant from an enum.
@@ -465,9 +466,15 @@ pub mod orphan
 }
 
 /// Exposed namespace of the module.
+#[ allow( unused_imports ) ]
 pub mod exposed
 {
-  pub use super::protected as struct_like;
+  use super::*;
+
+  pub use super::super::struct_like;
+
+  // pub use super::protected as struct_like;
+
   #[ doc( inline ) ]
   #[ allow( unused_imports ) ]
   pub use super::prelude::*;
diff --git a/module/core/macro_tools/src/tokens.rs b/module/core/macro_tools/src/tokens.rs
index 7a09fc4689..48109a5b21 100644
--- a/module/core/macro_tools/src/tokens.rs
+++ b/module/core/macro_tools/src/tokens.rs
@@ -94,9 +94,14 @@ pub mod orphan
 }
 
 /// Exposed namespace of the module.
+#[ allow( unused_imports ) ]
 pub mod exposed
 {
-  pub use super::protected as tokens;
+  use super::*;
+
+  pub use super::super::tokens;
+  // pub use super::protected as tokens;
+
   #[ doc( inline ) ]
   #[ allow( unused_imports ) ]
   pub use super::prelude::*;
diff --git a/module/core/macro_tools/src/typ.rs b/module/core/macro_tools/src/typ.rs
index 609cc717e3..fce30e9aae 100644
--- a/module/core/macro_tools/src/typ.rs
+++ b/module/core/macro_tools/src/typ.rs
@@ -185,9 +185,15 @@ pub mod orphan
 }
 
 /// Exposed namespace of the module.
+#[ allow( unused_imports ) ]
 pub mod exposed
 {
-  pub use super::protected as typ;
+  use super::*;
+
+  pub use super::super::typ;
+
+  // pub use super::protected as typ;
+
   #[ doc( inline ) ]
   #[ allow( unused_imports ) ]
   pub use super::prelude::*;
diff --git a/module/core/macro_tools/tests/inc/attr_prop_test.rs b/module/core/macro_tools/tests/inc/attr_prop_test.rs
index e2fdb5ecb6..4621031b8a 100644
--- a/module/core/macro_tools/tests/inc/attr_prop_test.rs
+++ b/module/core/macro_tools/tests/inc/attr_prop_test.rs
@@ -4,6 +4,7 @@ use quote::ToTokens;
 #[ test ]
 fn attr_prop_test()
 {
+  use the_module::{ AttributePropertyComponent, AttributePropertyBoolean, AttributePropertyOptionalSingletone };
 
   #[ derive( Debug, Default, Clone, Copy ) ]
   pub struct DebugMarker;
@@ -11,10 +12,10 @@ fn attr_prop_test()
   #[ derive( Debug, Default, Clone, Copy ) ]
   pub struct EnabledMarker;
 
-  pub trait AttributePropertyComponent
-  {
-    const KEYWORD : &'static str;
-  }
+  // pub trait AttributePropertyComponent
+  // {
+  //   const KEYWORD : &'static str;
+  // }
 
   impl AttributePropertyComponent for DebugMarker
   {
@@ -104,6 +105,8 @@ fn attr_prop_test()
 #[ test ]
 fn attribute_property_enabled()
 {
+  use the_module::AttributePropertyOptionalSingletone;
+
   // Test default value
   let attr : AttributePropertyOptionalSingletone = Default::default();
   assert_eq!( attr.internal(), None );
diff --git a/module/core/macro_tools/tests/inc/attr_test.rs b/module/core/macro_tools/tests/inc/attr_test.rs
index dab489f65d..ff787e8f00 100644
--- a/module/core/macro_tools/tests/inc/attr_test.rs
+++ b/module/core/macro_tools/tests/inc/attr_test.rs
@@ -1,5 +1,6 @@
 
 use super::*;
+use the_module::{ attr, qt, Result };
 
 //
 
@@ -35,6 +36,7 @@ fn is_standard_edge_cases()
 #[ test ]
 fn attribute_component_from_meta()
 {
+  use the_module::AttributeComponent;
   struct MyComponent;
 
   impl AttributeComponent for MyComponent
@@ -74,3 +76,67 @@ fn attribute_component_from_meta()
   // Assert that the construction failed
   assert!( result.is_err() );
 }
+
+#[ test ]
+fn attribute_basic() -> Result< () >
+{
+  use macro_tools::syn::parse::Parser;
+
+  // test.case( "AttributesOuter" );
+  let code = qt!
+  {
+    #[ derive( Copy ) ]
+    #[ derive( Clone ) ]
+    #[ derive( Debug ) ]
+  };
+  let got = syn::parse2::< the_module::AttributesOuter >( code ).unwrap();
+  let exp = the_module::AttributesOuter::from( syn::Attribute::parse_outer.parse2( qt!
+  {
+    #[ derive( Copy ) ]
+    #[ derive( Clone ) ]
+    #[ derive( Debug ) ]
+  } )? );
+  a_id!( got, exp );
+
+  // test.case( "AttributesInner" );
+  let code = qt!
+  {
+    // #![ deny( missing_docs ) ]
+    #![ warn( something ) ]
+  };
+  let got = syn::parse2::< the_module::AttributesInner >( code ).unwrap();
+  let exp = the_module::AttributesInner::from( syn::Attribute::parse_inner.parse2( qt!
+  {
+    // #![ deny( missing_docs ) ]
+    #![ warn( something ) ]
+  } )? );
+  a_id!( got, exp );
+
+  // test.case( "AttributesInner" );
+  let code = qt!
+  {
+    #![ warn( missing_docs1 ) ]
+    #![ warn( missing_docs2 ) ]
+    #[ warn( something1 ) ]
+    #[ warn( something2 ) ]
+  };
+  let got = syn::parse2::< the_module::Pair< the_module::AttributesInner, the_module::AttributesOuter > >( code ).unwrap();
+  let exp = the_module::Pair::from
+  ((
+    the_module::AttributesInner::from( syn::Attribute::parse_inner.parse2( qt!
+    {
+      #![ warn( missing_docs1 ) ]
+      #![ warn( missing_docs2 ) ]
+    } )? ),
+    the_module::AttributesOuter::from( syn::Attribute::parse_outer.parse2( qt!
+    {
+      #[ warn( something1 ) ]
+      #[ warn( something2 ) ]
+    } )? ),
+  ));
+  a_id!( got, exp );
+
+  //
+
+  Ok( () )
+}
diff --git a/module/core/macro_tools/tests/inc/compile_time_test.rs b/module/core/macro_tools/tests/inc/compile_time_test.rs
new file mode 100644
index 0000000000..90e9dd7fca
--- /dev/null
+++ b/module/core/macro_tools/tests/inc/compile_time_test.rs
@@ -0,0 +1,40 @@
+
+use super::*;
+
+//
+
+#[ test ]
+fn concat()
+{
+  use the_module::ct;
+
+  const KEYWORD : &'static str = "keyword";
+  let got = ct::str::concat!
+  (
+    "Known attirbutes are : ",
+    KEYWORD,
+    ".",
+  );
+  let exp = "Known attirbutes are : keyword.";
+  a_id!( got, exp );
+
+}
+
+//
+
+#[ test ]
+fn format()
+{
+  use the_module::ct;
+
+  const KEYWORD : &'static str = "keyword";
+  let got = ct::str::format!
+  (
+    "Known attirbutes are : {}{}",
+    KEYWORD,
+    ".",
+  );
+  let exp = "Known attirbutes are : keyword.";
+  a_id!( got, exp );
+
+}
diff --git a/module/core/macro_tools/tests/inc/container_kind_test.rs b/module/core/macro_tools/tests/inc/container_kind_test.rs
index e6669410a1..b88fae9b22 100644
--- a/module/core/macro_tools/tests/inc/container_kind_test.rs
+++ b/module/core/macro_tools/tests/inc/container_kind_test.rs
@@ -1,5 +1,6 @@
 
 use super::*;
+use the_module::qt;
 
 //
 
diff --git a/module/core/macro_tools/tests/inc/derive_test.rs b/module/core/macro_tools/tests/inc/derive_test.rs
index bd36f417cf..9142c0cadd 100644
--- a/module/core/macro_tools/tests/inc/derive_test.rs
+++ b/module/core/macro_tools/tests/inc/derive_test.rs
@@ -6,7 +6,7 @@ use super::*;
 #[test]
 fn named_fields_with_named_fields()
 {
-  use syn::{parse_quote, punctuated::Punctuated, Field, token::Comma};
+  use syn::{ parse_quote, punctuated::Punctuated, Field, token::Comma };
   use the_module::derive;
 
   let ast: syn::DeriveInput = parse_quote!
diff --git a/module/core/macro_tools/tests/inc/diag_test.rs b/module/core/macro_tools/tests/inc/diag_test.rs
index e39db7d824..6ac8786a9b 100644
--- a/module/core/macro_tools/tests/inc/diag_test.rs
+++ b/module/core/macro_tools/tests/inc/diag_test.rs
@@ -1,5 +1,6 @@
 
 use super::*;
+use the_module::{ qt, tree_print };
 
 //
 
diff --git a/module/core/macro_tools/tests/inc/equation_test.rs b/module/core/macro_tools/tests/inc/equation_test.rs
index 735d8261fc..6ae0e9c806 100644
--- a/module/core/macro_tools/tests/inc/equation_test.rs
+++ b/module/core/macro_tools/tests/inc/equation_test.rs
@@ -1,5 +1,6 @@
 
 use super::*;
+use the_module::{ parse_quote, qt, code_to_str, tree_print, Result };
 
 //
 
@@ -10,6 +11,7 @@ tests_impls!
   fn equation_test() -> Result< () >
   {
     use syn::spanned::Spanned;
+    use the_module::equation;
 
     // test.case( "basic" );
     let input = qt!
@@ -77,6 +79,7 @@ tests_impls!
 
   fn equation_from_meta_test()
   {
+    use the_module::equation;
 
     let attr1 : syn::Attribute = syn::parse_quote!( #[ default( 31 ) ] );
     tree_print!( attr1 );
diff --git a/module/core/macro_tools/tests/inc/generic_args_test.rs b/module/core/macro_tools/tests/inc/generic_args_test.rs
index 8076737930..56cbe65c50 100644
--- a/module/core/macro_tools/tests/inc/generic_args_test.rs
+++ b/module/core/macro_tools/tests/inc/generic_args_test.rs
@@ -1,5 +1,6 @@
 
 use super::*;
+use the_module::parse_quote;
 
 //
 
diff --git a/module/core/macro_tools/tests/inc/generic_params_test.rs b/module/core/macro_tools/tests/inc/generic_params_test.rs
index 12e82142a9..18904d5d8f 100644
--- a/module/core/macro_tools/tests/inc/generic_params_test.rs
+++ b/module/core/macro_tools/tests/inc/generic_params_test.rs
@@ -1,5 +1,7 @@
 
 use super::*;
+use the_module::parse_quote;
+// xxx : move `parse_quote` under a namespace `typed`
 
 //
 
diff --git a/module/core/macro_tools/tests/inc/mod.rs b/module/core/macro_tools/tests/inc/mod.rs
index 9ed0a80bee..198ab61378 100644
--- a/module/core/macro_tools/tests/inc/mod.rs
+++ b/module/core/macro_tools/tests/inc/mod.rs
@@ -3,8 +3,6 @@
 use super::*;
 #[ allow( unused_imports ) ]
 use test_tools::exposed::*;
-#[ allow( unused_imports ) ]
-use the_module::protected::*;
 
 #[ allow( unused_imports ) ]
 #[ cfg( feature = "enabled" ) ]
@@ -17,6 +15,7 @@ mod if_enabled
   mod attr_test;
   mod attr_prop_test;
   mod basic_test;
+  mod compile_time_test;
   mod container_kind_test;
   mod derive_test;
   mod diag_test;
@@ -29,7 +28,6 @@ mod if_enabled
   mod phantom_test;
   mod quantifier_test;
   mod struct_like_test;
-  mod syntax_test;
   mod tokens_test;
   mod typ_test;
 
diff --git a/module/core/macro_tools/tests/inc/phantom_test.rs b/module/core/macro_tools/tests/inc/phantom_test.rs
index 44c3610e66..65ad2e653a 100644
--- a/module/core/macro_tools/tests/inc/phantom_test.rs
+++ b/module/core/macro_tools/tests/inc/phantom_test.rs
@@ -1,5 +1,6 @@
 
 use super::*;
+use the_module::{ tree_print };
 
 #[ test ]
 fn phantom_add_basic()
diff --git a/module/core/macro_tools/tests/inc/quantifier_test.rs b/module/core/macro_tools/tests/inc/quantifier_test.rs
index 5a6c59bcf3..a0e3a52ad8 100644
--- a/module/core/macro_tools/tests/inc/quantifier_test.rs
+++ b/module/core/macro_tools/tests/inc/quantifier_test.rs
@@ -1,5 +1,6 @@
 
 use super::*;
+use the_module::{ qt, Result };
 
 //
 
diff --git a/module/core/macro_tools/tests/inc/syntax_test.rs b/module/core/macro_tools/tests/inc/syntax_test.rs
deleted file mode 100644
index adddd1285d..0000000000
--- a/module/core/macro_tools/tests/inc/syntax_test.rs
+++ /dev/null
@@ -1,83 +0,0 @@
-
-use super::*;
-
-//
-
-tests_impls!
-{
-
-  //
-
-  fn attribute() -> Result< () >
-  {
-    use macro_tools::syn::parse::Parser;
-
-    // test.case( "AttributesOuter" );
-    let code = qt!
-    {
-      #[ derive( Copy ) ]
-      #[ derive( Clone ) ]
-      #[ derive( Debug ) ]
-    };
-    let got = syn::parse2::< the_module::AttributesOuter >( code ).unwrap();
-    let exp = the_module::AttributesOuter::from( syn::Attribute::parse_outer.parse2( qt!
-    {
-      #[ derive( Copy ) ]
-      #[ derive( Clone ) ]
-      #[ derive( Debug ) ]
-    } )? );
-    a_id!( got, exp );
-
-    // test.case( "AttributesInner" );
-    let code = qt!
-    {
-      // #![ deny( missing_docs ) ]
-      #![ warn( something ) ]
-    };
-    let got = syn::parse2::< the_module::AttributesInner >( code ).unwrap();
-    let exp = the_module::AttributesInner::from( syn::Attribute::parse_inner.parse2( qt!
-    {
-      // #![ deny( missing_docs ) ]
-      #![ warn( something ) ]
-    } )? );
-    a_id!( got, exp );
-
-    // test.case( "AttributesInner" );
-    let code = qt!
-    {
-      #![ warn( missing_docs1 ) ]
-      #![ warn( missing_docs2 ) ]
-      #[ warn( something1 ) ]
-      #[ warn( something2 ) ]
-    };
-    let got = syn::parse2::< the_module::Pair< the_module::AttributesInner, the_module::AttributesOuter > >( code ).unwrap();
-    let exp = the_module::Pair::from
-    ((
-      the_module::AttributesInner::from( syn::Attribute::parse_inner.parse2( qt!
-      {
-        #![ warn( missing_docs1 ) ]
-        #![ warn( missing_docs2 ) ]
-      } )? ),
-      the_module::AttributesOuter::from( syn::Attribute::parse_outer.parse2( qt!
-      {
-        #[ warn( something1 ) ]
-        #[ warn( something2 ) ]
-      } )? ),
-    ));
-    a_id!( got, exp );
-
-    //
-
-    Ok( () )
-  }
-
-  //
-
-}
-
-//
-
-tests_index!
-{
-  attribute,
-}
diff --git a/module/core/macro_tools/tests/inc/tokens_test.rs b/module/core/macro_tools/tests/inc/tokens_test.rs
index fcae746f5d..8e26e06d57 100644
--- a/module/core/macro_tools/tests/inc/tokens_test.rs
+++ b/module/core/macro_tools/tests/inc/tokens_test.rs
@@ -1,5 +1,6 @@
 
 use super::*;
+use the_module::{ tree_print };
 
 //
 
diff --git a/module/core/macro_tools/tests/inc/typ_Test.rs b/module/core/macro_tools/tests/inc/typ_test.rs
similarity index 94%
rename from module/core/macro_tools/tests/inc/typ_Test.rs
rename to module/core/macro_tools/tests/inc/typ_test.rs
index 174c2c243b..cd3a08a7a0 100644
--- a/module/core/macro_tools/tests/inc/typ_Test.rs
+++ b/module/core/macro_tools/tests/inc/typ_test.rs
@@ -1,5 +1,6 @@
 
 use super::*;
+use the_module::qt;
 
 //
 
@@ -7,7 +8,7 @@ use super::*;
 fn is_optional_with_option_type()
 {
   use syn::parse_str;
-  use macro_tools::typ::is_optional;
+  use the_module::typ::is_optional;
 
   let type_string = "Option<i32>";
   let parsed_type : syn::Type = parse_str( type_string ).expect( "Type should parse correctly" );
@@ -19,7 +20,7 @@ fn is_optional_with_option_type()
 fn is_optional_with_non_option_type()
 {
   use syn::parse_str;
-  use macro_tools::typ::is_optional;
+  use the_module::typ::is_optional;
 
   let type_string = "Vec<i32>";
   let parsed_type : syn::Type = parse_str( type_string ).expect( "Type should parse correctly" );
@@ -31,7 +32,7 @@ fn is_optional_with_non_option_type()
 fn is_optional_with_nested_option_type()
 {
   use syn::parse_str;
-  use macro_tools::typ::is_optional;
+  use the_module::typ::is_optional;
 
   let type_string = "Option<Option<i32>>";
   let parsed_type : syn::Type = parse_str( type_string ).expect( "Type should parse correctly" );
@@ -43,7 +44,7 @@ fn is_optional_with_nested_option_type()
 fn is_optional_with_similar_name_type()
 {
   use syn::parse_str;
-  use macro_tools::typ::is_optional;
+  use the_module::typ::is_optional;
 
   let type_string = "OptionalValue";
   let parsed_type : syn::Type = parse_str( type_string ).expect( "Type should parse correctly" );
@@ -55,7 +56,7 @@ fn is_optional_with_similar_name_type()
 fn is_optional_with_empty_input()
 {
   use syn::{ parse_str, Type };
-  use macro_tools::typ::is_optional;
+  use the_module::typ::is_optional;
 
   let type_string = "";
   let parsed_type_result = parse_str::< Type >( type_string );
@@ -69,7 +70,7 @@ fn is_optional_with_empty_input()
 fn parameter_first_with_multiple_generics()
 {
   use syn::{ parse_str, Type };
-  use macro_tools::typ::parameter_first;
+  use the_module::typ::parameter_first;
 
   let type_string = "Result<Option<i32>, Error>";
   let parsed_type : Type = parse_str( type_string ).expect( "Type should parse correctly" );
@@ -84,7 +85,7 @@ fn parameter_first_with_multiple_generics()
 fn parameter_first_with_no_generics()
 {
   use syn::{ parse_str, Type };
-  use macro_tools::typ::parameter_first;
+  use the_module::typ::parameter_first;
 
   let type_string = "i32";
   let parsed_type : Type = parse_str( type_string ).expect( "Type should parse correctly" );
@@ -101,7 +102,7 @@ fn parameter_first_with_no_generics()
 fn parameter_first_with_single_generic()
 {
   use syn::{ parse_str, Type };
-  use macro_tools::typ::parameter_first;
+  use the_module::typ::parameter_first;
 
   let type_string = "Vec< i32 >";
   let parsed_type : Type = parse_str( type_string ).expect( "Type should parse correctly" );
@@ -116,7 +117,7 @@ fn parameter_first_with_single_generic()
 fn parameter_first_with_deeply_nested_generics()
 {
   use syn::{ parse_str, Type };
-  use macro_tools::typ::parameter_first;
+  use the_module::typ::parameter_first;
 
   let type_string = "Vec< HashMap< String, Option< i32 >  > >";
   let parsed_type : Type = parse_str( type_string ).expect( "Type should parse correctly" );
diff --git a/module/core/mem_tools/Cargo.toml b/module/core/mem_tools/Cargo.toml
index 08bc56fc1a..fd90f9d727 100644
--- a/module/core/mem_tools/Cargo.toml
+++ b/module/core/mem_tools/Cargo.toml
@@ -24,7 +24,7 @@ workspace = true
 features = [ "full" ]
 all-features = false
 
-# exclude = [ "/tests", "/examples", "-*" ]
+
 include = [
   "/rust/impl/mem",
   "/Cargo.toml",
diff --git a/module/core/mem_tools/src/lib.rs b/module/core/mem_tools/src/lib.rs
index fffffc6fdd..6e02217854 100644
--- a/module/core/mem_tools/src/lib.rs
+++ b/module/core/mem_tools/src/lib.rs
@@ -51,8 +51,10 @@ pub mod orphan
 
 /// Exposed namespace of the module.
 #[ cfg( feature = "enabled" ) ]
+#[ allow( unused_imports ) ]
 pub mod exposed
 {
+  use super::*;
   #[ doc( inline ) ]
   #[ allow( unused_imports ) ]
   pub use super::prelude::*;
diff --git a/module/core/mem_tools/src/mem.rs b/module/core/mem_tools/src/mem.rs
index b0c7e199f5..37de32b6c1 100644
--- a/module/core/mem_tools/src/mem.rs
+++ b/module/core/mem_tools/src/mem.rs
@@ -95,8 +95,10 @@ pub mod orphan
 }
 
 /// Exposed namespace of the module.
+#[ allow( unused_imports ) ]
 pub mod exposed
 {
+  use super::*;
   #[ doc( inline ) ]
   #[ allow( unused_imports ) ]
   pub use super::prelude::*;
diff --git a/module/core/meta_tools/Cargo.toml b/module/core/meta_tools/Cargo.toml
index 1fc7ff399b..282db2f43f 100644
--- a/module/core/meta_tools/Cargo.toml
+++ b/module/core/meta_tools/Cargo.toml
@@ -24,7 +24,7 @@ workspace = true
 features = [ "full" ]
 all-features = false
 
-# exclude = [ "/tests", "/examples", "-*" ]
+
 
 [features]
 default = [
diff --git a/module/core/mod_interface/Cargo.toml b/module/core/mod_interface/Cargo.toml
index bc096312e0..2dbf5da6c3 100644
--- a/module/core/mod_interface/Cargo.toml
+++ b/module/core/mod_interface/Cargo.toml
@@ -23,7 +23,7 @@ workspace = true
 [package.metadata.docs.rs]
 features = [ "full" ]
 all-features = false
-# exclude = [ "/tests", "/examples", "-*" ]
+
 
 [features]
 default = [ "enabled" ]
diff --git a/module/core/mod_interface/Readme.md b/module/core/mod_interface/Readme.md
index 1115dea469..337053a260 100644
--- a/module/core/mod_interface/Readme.md
+++ b/module/core/mod_interface/Readme.md
@@ -114,8 +114,10 @@ pub mod orphan
 }
 
 /// Exposed namespace of the module.
+#[ allow( unused_imports ) ]
 pub mod exposed
 {
+  use super::*;
   pub use super::prelude::*;
   pub use super::inner::exposed::*;
 }
diff --git a/module/core/mod_interface/src/lib.rs b/module/core/mod_interface/src/lib.rs
index 582ad8e8c9..bccf35a07b 100644
--- a/module/core/mod_interface/src/lib.rs
+++ b/module/core/mod_interface/src/lib.rs
@@ -42,8 +42,10 @@ pub mod orphan
 
 /// Exposed namespace of the module.
 #[ cfg( feature = "enabled" ) ]
+#[ allow( unused_imports ) ]
 pub mod exposed
 {
+  use super::*;
   #[ doc( inline ) ]
   #[ allow( unused_imports ) ]
   pub use super::prelude::*;
diff --git a/module/core/mod_interface/tests/inc/derive/attr_debug/layer_a.rs b/module/core/mod_interface/tests/inc/derive/attr_debug/layer_a.rs
index f1e9f256fb..e0a06be337 100644
--- a/module/core/mod_interface/tests/inc/derive/attr_debug/layer_a.rs
+++ b/module/core/mod_interface/tests/inc/derive/attr_debug/layer_a.rs
@@ -35,8 +35,10 @@ pub mod orphan
 }
 
 /// Exposed namespace of the module.
+#[ allow( unused_imports ) ]
 pub mod exposed
 {
+  use super::*;
   #[ doc( inline ) ]
   #[ allow( unused_imports ) ]
   pub use super::prelude::*;
diff --git a/module/core/mod_interface/tests/inc/derive/layer/layer_a.rs b/module/core/mod_interface/tests/inc/derive/layer/layer_a.rs
index f1e9f256fb..e0a06be337 100644
--- a/module/core/mod_interface/tests/inc/derive/layer/layer_a.rs
+++ b/module/core/mod_interface/tests/inc/derive/layer/layer_a.rs
@@ -35,8 +35,10 @@ pub mod orphan
 }
 
 /// Exposed namespace of the module.
+#[ allow( unused_imports ) ]
 pub mod exposed
 {
+  use super::*;
   #[ doc( inline ) ]
   #[ allow( unused_imports ) ]
   pub use super::prelude::*;
diff --git a/module/core/mod_interface/tests/inc/derive/layer/layer_b.rs b/module/core/mod_interface/tests/inc/derive/layer/layer_b.rs
index 8051e73936..5367a38023 100644
--- a/module/core/mod_interface/tests/inc/derive/layer/layer_b.rs
+++ b/module/core/mod_interface/tests/inc/derive/layer/layer_b.rs
@@ -35,8 +35,10 @@ pub mod orphan
 }
 
 /// Exposed namespace of the module.
+#[ allow( unused_imports ) ]
 pub mod exposed
 {
+  use super::*;
   #[ doc( inline ) ]
   #[ allow( unused_imports ) ]
   pub use super::prelude::*;
diff --git a/module/core/mod_interface/tests/inc/derive/layer_bad_vis/layer_a.rs b/module/core/mod_interface/tests/inc/derive/layer_bad_vis/layer_a.rs
index f1e9f256fb..e0a06be337 100644
--- a/module/core/mod_interface/tests/inc/derive/layer_bad_vis/layer_a.rs
+++ b/module/core/mod_interface/tests/inc/derive/layer_bad_vis/layer_a.rs
@@ -35,8 +35,10 @@ pub mod orphan
 }
 
 /// Exposed namespace of the module.
+#[ allow( unused_imports ) ]
 pub mod exposed
 {
+  use super::*;
   #[ doc( inline ) ]
   #[ allow( unused_imports ) ]
   pub use super::prelude::*;
diff --git a/module/core/mod_interface/tests/inc/derive/layer_unknown_vis/layer_a.rs b/module/core/mod_interface/tests/inc/derive/layer_unknown_vis/layer_a.rs
index f1e9f256fb..e0a06be337 100644
--- a/module/core/mod_interface/tests/inc/derive/layer_unknown_vis/layer_a.rs
+++ b/module/core/mod_interface/tests/inc/derive/layer_unknown_vis/layer_a.rs
@@ -35,8 +35,10 @@ pub mod orphan
 }
 
 /// Exposed namespace of the module.
+#[ allow( unused_imports ) ]
 pub mod exposed
 {
+  use super::*;
   #[ doc( inline ) ]
   #[ allow( unused_imports ) ]
   pub use super::prelude::*;
diff --git a/module/core/mod_interface/tests/inc/derive/use_as/layer_x.rs b/module/core/mod_interface/tests/inc/derive/use_as/layer_x.rs
index f1e9f256fb..e0a06be337 100644
--- a/module/core/mod_interface/tests/inc/derive/use_as/layer_x.rs
+++ b/module/core/mod_interface/tests/inc/derive/use_as/layer_x.rs
@@ -35,8 +35,10 @@ pub mod orphan
 }
 
 /// Exposed namespace of the module.
+#[ allow( unused_imports ) ]
 pub mod exposed
 {
+  use super::*;
   #[ doc( inline ) ]
   #[ allow( unused_imports ) ]
   pub use super::prelude::*;
diff --git a/module/core/mod_interface/tests/inc/derive/use_as/layer_y.rs b/module/core/mod_interface/tests/inc/derive/use_as/layer_y.rs
index 8051e73936..5367a38023 100644
--- a/module/core/mod_interface/tests/inc/derive/use_as/layer_y.rs
+++ b/module/core/mod_interface/tests/inc/derive/use_as/layer_y.rs
@@ -35,8 +35,10 @@ pub mod orphan
 }
 
 /// Exposed namespace of the module.
+#[ allow( unused_imports ) ]
 pub mod exposed
 {
+  use super::*;
   #[ doc( inline ) ]
   #[ allow( unused_imports ) ]
   pub use super::prelude::*;
diff --git a/module/core/mod_interface/tests/inc/derive/use_as/manual_only.rs b/module/core/mod_interface/tests/inc/derive/use_as/manual_only.rs
index 816287978c..8b2f13d663 100644
--- a/module/core/mod_interface/tests/inc/derive/use_as/manual_only.rs
+++ b/module/core/mod_interface/tests/inc/derive/use_as/manual_only.rs
@@ -31,8 +31,10 @@ pub mod orphan
 }
 
 #[doc = r" Exposed namespace of the module."]
+#[ allow( unused_imports ) ]
 pub mod exposed
 {
+  use super::*;
   #[doc(inline)]
   #[allow(unused_imports)]
   pub use super :: prelude :: * ;
diff --git a/module/core/mod_interface/tests/inc/derive/use_basic/layer_a.rs b/module/core/mod_interface/tests/inc/derive/use_basic/layer_a.rs
index f1e9f256fb..e0a06be337 100644
--- a/module/core/mod_interface/tests/inc/derive/use_basic/layer_a.rs
+++ b/module/core/mod_interface/tests/inc/derive/use_basic/layer_a.rs
@@ -35,8 +35,10 @@ pub mod orphan
 }
 
 /// Exposed namespace of the module.
+#[ allow( unused_imports ) ]
 pub mod exposed
 {
+  use super::*;
   #[ doc( inline ) ]
   #[ allow( unused_imports ) ]
   pub use super::prelude::*;
diff --git a/module/core/mod_interface/tests/inc/derive/use_basic/layer_b.rs b/module/core/mod_interface/tests/inc/derive/use_basic/layer_b.rs
index 8051e73936..5367a38023 100644
--- a/module/core/mod_interface/tests/inc/derive/use_basic/layer_b.rs
+++ b/module/core/mod_interface/tests/inc/derive/use_basic/layer_b.rs
@@ -35,8 +35,10 @@ pub mod orphan
 }
 
 /// Exposed namespace of the module.
+#[ allow( unused_imports ) ]
 pub mod exposed
 {
+  use super::*;
   #[ doc( inline ) ]
   #[ allow( unused_imports ) ]
   pub use super::prelude::*;
diff --git a/module/core/mod_interface/tests/inc/manual/layer/layer_a.rs b/module/core/mod_interface/tests/inc/manual/layer/layer_a.rs
index f1e9f256fb..e0a06be337 100644
--- a/module/core/mod_interface/tests/inc/manual/layer/layer_a.rs
+++ b/module/core/mod_interface/tests/inc/manual/layer/layer_a.rs
@@ -35,8 +35,10 @@ pub mod orphan
 }
 
 /// Exposed namespace of the module.
+#[ allow( unused_imports ) ]
 pub mod exposed
 {
+  use super::*;
   #[ doc( inline ) ]
   #[ allow( unused_imports ) ]
   pub use super::prelude::*;
diff --git a/module/core/mod_interface/tests/inc/manual/layer/layer_b.rs b/module/core/mod_interface/tests/inc/manual/layer/layer_b.rs
index 8051e73936..5367a38023 100644
--- a/module/core/mod_interface/tests/inc/manual/layer/layer_b.rs
+++ b/module/core/mod_interface/tests/inc/manual/layer/layer_b.rs
@@ -35,8 +35,10 @@ pub mod orphan
 }
 
 /// Exposed namespace of the module.
+#[ allow( unused_imports ) ]
 pub mod exposed
 {
+  use super::*;
   #[ doc( inline ) ]
   #[ allow( unused_imports ) ]
   pub use super::prelude::*;
diff --git a/module/core/mod_interface/tests/inc/manual/layer/mod.rs b/module/core/mod_interface/tests/inc/manual/layer/mod.rs
index ea4b8b33bc..5dbc62d0ba 100644
--- a/module/core/mod_interface/tests/inc/manual/layer/mod.rs
+++ b/module/core/mod_interface/tests/inc/manual/layer/mod.rs
@@ -38,8 +38,10 @@ pub mod orphan
 }
 
 /// Exposed namespace of the module.
+#[ allow( unused_imports ) ]
 pub mod exposed
 {
+  use super::*;
   #[ doc( inline ) ]
   #[ allow( unused_imports ) ]
   pub use super::prelude::*;
diff --git a/module/core/mod_interface/tests/inc/manual/layer_use/layer_a.rs b/module/core/mod_interface/tests/inc/manual/layer_use/layer_a.rs
index 7e0b8bd94b..5585c1db64 100644
--- a/module/core/mod_interface/tests/inc/manual/layer_use/layer_a.rs
+++ b/module/core/mod_interface/tests/inc/manual/layer_use/layer_a.rs
@@ -56,8 +56,10 @@ pub mod orphan
 }
 
 /// Exposed namespace of the module.
+#[ allow( unused_imports ) ]
 pub mod exposed
 {
+  use super::*;
   #[ doc( inline ) ]
   #[ allow( unused_imports ) ]
   pub use super::prelude::*;
diff --git a/module/core/mod_interface/tests/inc/manual/layer_use/layer_b.rs b/module/core/mod_interface/tests/inc/manual/layer_use/layer_b.rs
index 9a68ea64fd..fa85219843 100644
--- a/module/core/mod_interface/tests/inc/manual/layer_use/layer_b.rs
+++ b/module/core/mod_interface/tests/inc/manual/layer_use/layer_b.rs
@@ -56,8 +56,10 @@ pub mod orphan
 }
 
 /// Exposed namespace of the module.
+#[ allow( unused_imports ) ]
 pub mod exposed
 {
+  use super::*;
   #[ doc( inline ) ]
   #[ allow( unused_imports ) ]
   pub use super::prelude::*;
diff --git a/module/core/mod_interface/tests/inc/manual/layer_use/mod.rs b/module/core/mod_interface/tests/inc/manual/layer_use/mod.rs
index ea4b8b33bc..5dbc62d0ba 100644
--- a/module/core/mod_interface/tests/inc/manual/layer_use/mod.rs
+++ b/module/core/mod_interface/tests/inc/manual/layer_use/mod.rs
@@ -38,8 +38,10 @@ pub mod orphan
 }
 
 /// Exposed namespace of the module.
+#[ allow( unused_imports ) ]
 pub mod exposed
 {
+  use super::*;
   #[ doc( inline ) ]
   #[ allow( unused_imports ) ]
   pub use super::prelude::*;
diff --git a/module/core/mod_interface/tests/inc/manual/micro_modules/mod.rs b/module/core/mod_interface/tests/inc/manual/micro_modules/mod.rs
index f052ac97cc..9c32dd6afe 100644
--- a/module/core/mod_interface/tests/inc/manual/micro_modules/mod.rs
+++ b/module/core/mod_interface/tests/inc/manual/micro_modules/mod.rs
@@ -34,8 +34,10 @@ pub mod orphan
 }
 
 /// Exposed namespace of the module.
+#[ allow( unused_imports ) ]
 pub mod exposed
 {
+  use super::*;
   #[ doc( inline ) ]
   #[ allow( unused_imports ) ]
   pub use super::prelude::*;
diff --git a/module/core/mod_interface/tests/inc/manual/micro_modules_two/mod.rs b/module/core/mod_interface/tests/inc/manual/micro_modules_two/mod.rs
index a48af7bc73..7a28028526 100644
--- a/module/core/mod_interface/tests/inc/manual/micro_modules_two/mod.rs
+++ b/module/core/mod_interface/tests/inc/manual/micro_modules_two/mod.rs
@@ -41,8 +41,10 @@ pub mod orphan
 }
 
 /// Exposed namespace of the module.
+#[ allow( unused_imports ) ]
 pub mod exposed
 {
+  use super::*;
   #[ doc( inline ) ]
   #[ allow( unused_imports ) ]
   pub use super::prelude::*;
diff --git a/module/core/mod_interface_meta/Cargo.toml b/module/core/mod_interface_meta/Cargo.toml
index 8364db34d6..10201d821f 100644
--- a/module/core/mod_interface_meta/Cargo.toml
+++ b/module/core/mod_interface_meta/Cargo.toml
@@ -24,7 +24,7 @@ workspace = true
 features = [ "full" ]
 all-features = false
 
-# exclude = [ "/tests", "/examples", "-*" ]
+
 include = [
   "/rust/impl/meta/mod_interface_meta_lib.rs",
   "/rust/impl/meta/mod_interface/meta",
diff --git a/module/core/mod_interface_meta/src/impls.rs b/module/core/mod_interface_meta/src/impls.rs
index 0f4608e420..fa314cbb6c 100644
--- a/module/core/mod_interface_meta/src/impls.rs
+++ b/module/core/mod_interface_meta/src/impls.rs
@@ -110,7 +110,7 @@ pub( crate ) mod private
     // clauses_map : &mut HashMap< u32, Vec< proc_macro2::TokenStream > >,
   )
   ->
-  Result< () >
+  syn::Result< () >
   {
 
     let attrs1 = &record.attrs;
@@ -183,7 +183,7 @@ pub( crate ) mod private
     // clauses_map : &mut HashMap< u32, Vec< proc_macro2::TokenStream > >,
   )
   ->
-  Result< () >
+  syn::Result< () >
   {
     let attrs1 = &record.attrs;
     let path = record.use_elements.as_ref().unwrap();
@@ -233,7 +233,7 @@ pub( crate ) mod private
     c : &'_ mut RecordContext< '_ >,
   )
   ->
-  Result< () >
+  syn::Result< () >
   {
     let attrs1 = &record.attrs;
     let attrs2 = &element.0;
@@ -280,7 +280,7 @@ pub( crate ) mod private
     c : &'_ mut RecordContext< '_ >,
   )
   ->
-  Result< () >
+  syn::Result< () >
   {
     let attrs1 = &record.attrs;
     let attrs2 = &element.0;
@@ -337,7 +337,7 @@ pub( crate ) mod private
   /// Protocol of modularity unifying interface of a module and introducing layers.
   ///
   #[ allow ( dead_code ) ]
-  pub fn mod_interface( input : proc_macro::TokenStream ) -> Result< proc_macro2::TokenStream >
+  pub fn mod_interface( input : proc_macro::TokenStream ) -> syn::Result< proc_macro2::TokenStream >
   {
     use ElementType::*;
 
@@ -384,7 +384,7 @@ pub( crate ) mod private
         },
         _ =>
         {
-          record.elements.iter().try_for_each( | element | -> Result::< () >
+          record.elements.iter().try_for_each( | element | -> syn::Result::< () >
           {
             match record.element_type
             {
@@ -400,12 +400,12 @@ pub( crate ) mod private
               {
               },
             }
-            Result::Ok( () )
+            syn::Result::Ok( () )
           })?;
         }
       };
 
-      Result::Ok( () )
+      syn::Result::Ok( () )
     })?;
 
     let immediates_clause = clauses_map.get( &ClauseImmediates::Kind() ).unwrap();
@@ -489,8 +489,10 @@ pub mod orphan
 }
 
 /// Exposed namespace of the module.
+#[ allow( unused_imports ) ]
 pub mod exposed
 {
+  use super::*;
   pub use super::prelude::*;
   #[ allow( unused_imports ) ]
   pub use super::private::
diff --git a/module/core/mod_interface_meta/src/record.rs b/module/core/mod_interface_meta/src/record.rs
index b078dcf6c6..31d42633c5 100644
--- a/module/core/mod_interface_meta/src/record.rs
+++ b/module/core/mod_interface_meta/src/record.rs
@@ -31,7 +31,7 @@ pub( crate ) mod private
   impl syn::parse::Parse for ElementType
   {
 
-    fn parse( input : ParseStream< '_ > ) -> Result< Self >
+    fn parse( input : ParseStream< '_ > ) -> syn::Result< Self >
     {
       let lookahead = input.lookahead1();
       let element_type = match()
@@ -94,7 +94,7 @@ pub( crate ) mod private
   impl syn::parse::Parse for Record
   {
 
-    fn parse( input : ParseStream< '_ > ) -> Result< Self >
+    fn parse( input : ParseStream< '_ > ) -> syn::Result< Self >
     {
 
       let attrs = input.parse()?;
@@ -187,7 +187,7 @@ pub( crate ) mod private
   {
     /// Validate each inner attribute of the thesis.
     #[ allow ( dead_code ) ]
-    pub fn inner_attributes_validate( &self ) -> Result< () >
+    pub fn inner_attributes_validate( &self ) -> syn::Result< () >
     {
       self.head.iter().try_for_each( | attr |
       {
@@ -210,7 +210,7 @@ pub( crate ) mod private
           ));
         }
 
-        Result::Ok( () )
+        syn::Result::Ok( () )
       })?;
       Ok( () )
     }
@@ -229,7 +229,7 @@ pub( crate ) mod private
 
   impl syn::parse::Parse for Thesis
   {
-    fn parse( input : ParseStream< '_ > ) -> Result< Self >
+    fn parse( input : ParseStream< '_ > ) -> syn::Result< Self >
     {
       let head = input.parse()?;
       // let head = Default::default();
@@ -273,8 +273,10 @@ pub mod orphan
 }
 
 /// Exposed namespace of the module.
+#[ allow( unused_imports ) ]
 pub mod exposed
 {
+  use super::*;
   #[ allow( unused_imports ) ]
   pub use super::prelude::*;
   #[ allow( unused_imports ) ]
diff --git a/module/core/mod_interface_meta/src/use_tree.rs b/module/core/mod_interface_meta/src/use_tree.rs
index a7c1397e96..55779072d7 100644
--- a/module/core/mod_interface_meta/src/use_tree.rs
+++ b/module/core/mod_interface_meta/src/use_tree.rs
@@ -2,7 +2,7 @@
 pub( crate ) mod private
 {
   use macro_tools::prelude::*;
-  use macro_tools::Result;
+  // use macro_tools::syn::Result;
   // use macro_tools::err;
 
   #[ derive( Debug, PartialEq, Eq, Clone ) ]
@@ -44,7 +44,7 @@ pub( crate ) mod private
     }
 
     /// Get pure path, cutting off `as module2` from `use module1 as module2`.
-    pub fn pure_path( &self ) -> Result< syn::punctuated::Punctuated< syn::Ident, Token![::] > >
+    pub fn pure_path( &self ) -> syn::Result< syn::punctuated::Punctuated< syn::Ident, Token![::] > >
     {
       use syn::UseTree::*;
 
@@ -89,7 +89,7 @@ pub( crate ) mod private
     /// Pure path without super.
     /// Get pure path, cutting off `as module2` from `use module1 as module2`.
     /// Strip first `super::` in `super::some::module`
-    pub fn pure_without_super_path( &self ) -> Result< syn::punctuated::Punctuated< syn::Ident, Token![::] > >
+    pub fn pure_without_super_path( &self ) -> syn::Result< syn::punctuated::Punctuated< syn::Ident, Token![::] > >
     {
       let path = self.pure_path()?;
       if path.len() < 1
@@ -107,7 +107,7 @@ pub( crate ) mod private
 
     /// Adjusted path.
     /// Add `super::private::` to path unless it starts from `::` or `super` or `crate`.
-    pub fn adjsuted_implicit_path( &self ) -> Result< syn::punctuated::Punctuated< syn::Ident, Token![::] > >
+    pub fn adjsuted_implicit_path( &self ) -> syn::Result< syn::punctuated::Punctuated< syn::Ident, Token![::] > >
     {
       // use syn::UseTree::*;
       let pure_path = self.pure_path()?;
@@ -144,7 +144,7 @@ pub( crate ) mod private
 
   impl syn::parse::Parse for UseTree
   {
-    fn parse( input : ParseStream< '_ > ) -> Result< Self >
+    fn parse( input : ParseStream< '_ > ) -> syn::Result< Self >
     {
       use syn::UseTree::*;
       let leading_colon = input.parse()?;
@@ -224,8 +224,10 @@ pub mod orphan
 }
 
 /// Exposed namespace of the module.
+#[ allow( unused_imports ) ]
 pub mod exposed
 {
+  use super::*;
   #[ allow( unused_imports ) ]
   pub use super::prelude::*;
 
diff --git a/module/core/mod_interface_meta/src/visibility.rs b/module/core/mod_interface_meta/src/visibility.rs
index 10d8a68c48..9e551429ea 100644
--- a/module/core/mod_interface_meta/src/visibility.rs
+++ b/module/core/mod_interface_meta/src/visibility.rs
@@ -2,7 +2,7 @@
 pub( crate ) mod private
 {
   use macro_tools::prelude::*;
-  use macro_tools::Result;
+  // use macro_tools::syn::Result;
   use core::hash::{ Hash, Hasher };
 
   pub const VALID_VISIBILITY_LIST_STR : &str = "[ private, protected, orphan, exposed, prelude ]";
@@ -298,37 +298,37 @@ pub( crate ) mod private
   impl Visibility
   {
 
-    fn parse_protected( input : ParseStream< '_ > ) -> Result< Self >
+    fn parse_protected( input : ParseStream< '_ > ) -> syn::Result< Self >
     {
       Self::_parse_vis::< VisProtected >( input )
     }
 
-    fn parse_orphan( input : ParseStream< '_ > ) -> Result< Self >
+    fn parse_orphan( input : ParseStream< '_ > ) -> syn::Result< Self >
     {
       Self::_parse_vis::< VisOrphan >( input )
     }
 
-    fn parse_exposed( input : ParseStream< '_ > ) -> Result< Self >
+    fn parse_exposed( input : ParseStream< '_ > ) -> syn::Result< Self >
     {
       Self::_parse_vis::< VisExposed >( input )
     }
 
-    fn parse_prelude( input : ParseStream< '_ > ) -> Result< Self >
+    fn parse_prelude( input : ParseStream< '_ > ) -> syn::Result< Self >
     {
       Self::_parse_vis::< VisPrelude >( input )
     }
 
-    fn parse_pub( input : ParseStream< '_ > ) -> Result< Self >
+    fn parse_pub( input : ParseStream< '_ > ) -> syn::Result< Self >
     {
       Self::_parse_vis::< VisPublic >( input )
     }
 
-    // fn parse_pub( input : ParseStream< '_ > ) -> Result< Self >
+    // fn parse_pub( input : ParseStream< '_ > ) -> syn::Result< Self >
     // {
     //   Ok( Visibility::Public( syn::VisPublic { pub_token : input.parse()? } ) )
     // }
 
-    fn _parse_vis< Vis >( input : ParseStream< '_ > ) -> Result< Self >
+    fn _parse_vis< Vis >( input : ParseStream< '_ > ) -> syn::Result< Self >
     where
       Vis : Into< Visibility > + VisibilityInterface,
     {
@@ -380,7 +380,7 @@ pub( crate ) mod private
       ).into() )
     }
 
-    // fn parse_in_crate( input : ParseStream< '_ > ) -> Result< Self >
+    // fn parse_in_crate( input : ParseStream< '_ > ) -> syn::Result< Self >
     // {
     //   if input.peek2( Token![ :: ] )
     //   {
@@ -435,7 +435,7 @@ pub( crate ) mod private
 
   impl syn::parse::Parse for Visibility
   {
-    fn parse( input : ParseStream< '_ > ) -> Result< Self >
+    fn parse( input : ParseStream< '_ > ) -> syn::Result< Self >
     {
       // Recognize an empty None-delimited group, as produced by a $:vis
       // matcher that matched no tokens.
@@ -531,8 +531,10 @@ pub mod orphan
 }
 
 /// Exposed namespace of the module.
+#[ allow( unused_imports ) ]
 pub mod exposed
 {
+  use super::*;
   #[ allow( unused_imports ) ]
   pub use super::prelude::*;
 
diff --git a/module/core/process_tools/Cargo.toml b/module/core/process_tools/Cargo.toml
index f3e45a836d..926b981a38 100644
--- a/module/core/process_tools/Cargo.toml
+++ b/module/core/process_tools/Cargo.toml
@@ -27,7 +27,7 @@ all-features = false
 
 [features]
 default = [ "enabled", "process_environment_is_cicd" ]
-full = [ "enabled", "process_environment_is_cicd" ]
+full = [ "default" ]
 enabled = [
   "mod_interface/enabled",
   "former/enabled",
@@ -43,7 +43,7 @@ process_environment_is_cicd = []
 mod_interface = { workspace = true }
 former = { workspace = true, features = [ "derive_former" ] }
 proper_path_tools = { workspace = true }
-error_tools = { workspace = true, features = [ "error_for_app" ] } # qqq : xxx : rid off error_for_app
+error_tools = { workspace = true, features = [ "error_untyped" ] }
 iter_tools = { workspace = true }
 
 ## external
diff --git a/module/core/program_tools/Cargo.toml b/module/core/program_tools/Cargo.toml
index 30faf2edc3..1ba2675334 100644
--- a/module/core/program_tools/Cargo.toml
+++ b/module/core/program_tools/Cargo.toml
@@ -45,7 +45,7 @@ enabled = [
 mod_interface = { workspace = true }
 former = { workspace = true, features = [ "derive_former" ] }
 proper_path_tools = { workspace = true }
-error_tools = { workspace = true, features = [ "error_for_app" ] } # qqq : xxx : rid off error_for_app
+error_tools = { workspace = true, features = [ "error_untyped" ] } # qqq : xxx : rid of error_untyped
 iter_tools = { workspace = true }
 
 # ## external
diff --git a/module/core/program_tools/src/lib.rs b/module/core/program_tools/src/lib.rs
index 71c19f2ab4..19f55a0993 100644
--- a/module/core/program_tools/src/lib.rs
+++ b/module/core/program_tools/src/lib.rs
@@ -4,7 +4,7 @@
 #![ doc( html_root_url = "https://docs.rs/program_tools/latest/program_tools/" ) ]
 #![ doc = include_str!( concat!( env!( "CARGO_MANIFEST_DIR" ), "/", "Readme.md" ) ) ]
 
-#![ allow( unused_imports, dead_code, missing_docs ) ] // xxx : rid off
+#![ allow( unused_imports, dead_code, missing_docs ) ] // xxx : rid of
 
 #[ cfg( feature = "enabled" ) ]
 use mod_interface::mod_interface;
diff --git a/module/core/proper_path_tools/Cargo.toml b/module/core/proper_path_tools/Cargo.toml
index 1571d43e0f..1480bf782b 100644
--- a/module/core/proper_path_tools/Cargo.toml
+++ b/module/core/proper_path_tools/Cargo.toml
@@ -24,19 +24,29 @@ features = [ "full" ]
 all-features = false
 
 [features]
-default = [ "enabled", "path_unique_folder_name" ]
-full = [ "enabled", "path_unique_folder_name", "derive_serde" ]
+default = [
+  "enabled",
+  "path_unique_folder_name",
+  "path_utf8",
+]
+full = [
+  "default",
+  "derive_serde",
+  "path_utf8",
+]
 no_std = []
 use_alloc = [ "no_std" ]
 enabled = [ "mod_interface/enabled" ]
 
 path_unique_folder_name = []
 derive_serde = [ "serde" ]
+path_utf8 = [ "camino" ]
 
 [dependencies]
 regex = { version = "1.10.3" }
 mod_interface = { workspace = true }
 serde = { version = "1.0.197", optional = true, features = [ "derive" ] }
+camino = { version = "1.1.7", optional = true, features = [] }
 
 [dev-dependencies]
 test_tools = { workspace = true }
diff --git a/module/core/proper_path_tools/src/lib.rs b/module/core/proper_path_tools/src/lib.rs
index d437f55081..96b91321c3 100644
--- a/module/core/proper_path_tools/src/lib.rs
+++ b/module/core/proper_path_tools/src/lib.rs
@@ -18,4 +18,11 @@ mod_interface!
   /// Basic functionality.
   layer path;
 
+  /// Transitive TryFrom and TryInto.
+  layer transitive;
+
+  #[ cfg( feature = "path_utf8" ) ]
+  protected use ::camino::{ Utf8Path, Utf8PathBuf };
+  protected use ::std::path::{ PathBuf, Path };
+
 }
diff --git a/module/core/proper_path_tools/src/path.rs b/module/core/proper_path_tools/src/path.rs
index 7e00e31d19..b7f1b0e277 100644
--- a/module/core/proper_path_tools/src/path.rs
+++ b/module/core/proper_path_tools/src/path.rs
@@ -5,20 +5,6 @@ pub( crate ) mod private
   #[ cfg( feature = "no_std" ) ]
   extern crate std;
 
-  // use std::
-  // {
-  //   path::{ Component, Path, PathBuf },
-  //   time::{ SystemTime, UNIX_EPOCH, SystemTimeError },
-  // };
-  // use cargo_metadata::camino::{ Utf8Path, Utf8PathBuf };
-
-  // // xxx : it's not path, but file
-  // /// Check if path is valid.
-  // pub fn valid_is( path : &str ) -> bool
-  // {
-  //   std::fs::metadata( path ).is_ok()
-  // }
-
   /// Determines if a given path string contains unescaped glob pattern characters.
   ///
   /// # Parameters:
@@ -48,42 +34,43 @@ pub( crate ) mod private
   /// assert_eq!( path::is_glob( "file\\[0-9].txt" ), false ); // Escaped brackets, not a glob pattern
   /// ```
 
-  pub fn is_glob( path : &str ) -> bool 
+  // qqq : xxx : should probably be Path
+  pub fn is_glob( path : &str ) -> bool
   {
     let mut chars = path.chars().peekable();
     let mut is_escaped = false;
     let mut in_brackets = false;
     let mut in_braces = false;
 
-    while let Some( c ) = chars.next() 
+    while let Some( c ) = chars.next()
     {
-      if is_escaped 
+      if is_escaped
       {
         // If the character is escaped, ignore its special meaning in the next iteration
         is_escaped = false;
         continue;
       }
 
-      match c 
+      match c
       {
-        '\\' => 
+        '\\' =>
         {
           is_escaped = !is_escaped;
         }
         '*' | '?' if !in_brackets && !in_braces => return true,
-        '[' if !in_brackets && !in_braces && !is_escaped => 
+        '[' if !in_brackets && !in_braces && !is_escaped =>
         {
           // Enter a bracket block, indicating potential glob pattern
           in_brackets = true;
           // continue; // Ensure we don't immediately exit on the next char if it's ']'
         }
-        ']' if in_brackets => 
+        ']' if in_brackets =>
         {
           // in_brackets = false;
           return true;
         }
         '{' if !in_braces && !is_escaped => in_braces = true,
-        '}' if in_braces => 
+        '}' if in_braces =>
         {
           // in_braces = false;
           return true;
@@ -152,33 +139,33 @@ pub( crate ) mod private
     let mut starts_with_dot = false;
 
     let mut iter = path.as_ref().components().peekable();
-    if let Some( first ) = iter.peek() 
+    if let Some( first ) = iter.peek()
     {
       starts_with_dot = matches!( first, Component::CurDir );
-      if matches!( first, Component::RootDir ) 
+      if matches!( first, Component::RootDir )
       {
         components.push( Component::RootDir );
         iter.next(); // Skip the root component in further processing
       }
     }
 
-    for component in iter 
+    for component in iter
     {
       match component
       {
-        Component::ParentDir => 
+        Component::ParentDir =>
         {
-          match components.last() 
+          match components.last()
           {
-            Some( Component::Normal( _ ) ) => 
+            Some( Component::Normal( _ ) ) =>
             {
               components.pop();
             }
-            Some( Component::RootDir ) => 
+            Some( Component::RootDir ) =>
             {
               components.push( Component::ParentDir );
             }
-            Some( Component::ParentDir ) | None => 
+            Some( Component::ParentDir ) | None =>
             {
               components.push( Component::ParentDir );
             }
@@ -191,12 +178,12 @@ pub( crate ) mod private
     }
 
     let mut normalized = PathBuf::new();
-    if starts_with_dot || components.is_empty() 
+    if starts_with_dot || components.is_empty()
     {
       normalized.push( "." );
     }
 
-    for component in components.iter() 
+    for component in components.iter()
     {
       normalized.push( component.as_os_str() );
     }
@@ -226,19 +213,22 @@ pub( crate ) mod private
     // println!( "b" );
     let path = normalize( path );
 
-    // In Windows the regular/legacy paths (C :\foo) are supported by all programs, but have lots of bizarre restrictions for backwards compatibility with MS-DOS.
-    // And there are Windows NT UNC paths (\\?\C :\foo), which are more robust and with fewer gotchas, but are rarely supported by Windows programs. Even Microsoft’s own!
+    // In Windows the regular/legacy paths (C:\foo) are supported by all programs, but have lots of bizarre restrictions for backwards compatibility with MS-DOS.
+    // And there are Windows NT UNC paths (\\?\C:\foo), which are more robust and with fewer gotchas, but are rarely supported by Windows programs. Even Microsoft’s own!
     //
     // https://github.com/rust-lang/rust/issues/42869
     #[ cfg( target_os = "windows" ) ]
-    let path = 
+    let path =
     {
-      const VERBATIM_PREFIX: &str = r#"\\?\"#;
+      const VERBATIM_PREFIX : &str = r#"\\?\"#;
+      // is necessary because of the normalization step that replaces the backslash with a slash.
+      const VERBATIM_PREFIX_MIRRORS_EDGE : &str = "//?/";
       let p = path.display().to_string();
-      if p.starts_with( VERBATIM_PREFIX ) 
+      if p.starts_with( VERBATIM_PREFIX ) || p.starts_with( VERBATIM_PREFIX_MIRRORS_EDGE )
       {
         PathBuf::from( &p[ VERBATIM_PREFIX.len().. ] )
-      } else 
+      }
+      else
       {
         path.into()
       }
@@ -291,7 +281,7 @@ pub( crate ) mod private
     }
 
     // Increment and get the current value of the counter safely
-    let count = COUNTER.with( | counter | 
+    let count = COUNTER.with( | counter |
     {
       let val = counter.get();
       counter.set( val + 1 );
@@ -317,23 +307,24 @@ pub( crate ) mod private
   /// Examples:
   ///
   /// ```
+  /// use std::path::PathBuf;
+  /// use proper_path_tools::path;
   ///
-  /// let paths = vec![ "a/b/c", "/d/e", "f/g" ];
-  /// let joined = proper_path_tools::path::join_paths( paths.into_iter() );
+  /// let paths = vec![ PathBuf::from( "a/b/c" ), PathBuf::from( "/d/e" ), PathBuf::from( "f/g" ) ];
+  /// let joined = path::join_paths( paths.iter().map( | p | p.as_path() ) );
   /// assert_eq!( joined, std::path::PathBuf::from( "/d/e/f/g" ) );
   ///
-  /// let paths = vec![];
-  /// let joined = proper_path_tools::path::join_paths( paths.into_iter() );
-  /// assert_eq!( joined, std::path::PathBuf::from( "" ) );
-  ///
-  /// let paths = vec![ "", "a/b", "", "c", "" ];
-  /// let joined = proper_path_tools::path::join_paths( paths.into_iter() );
-  /// assert_eq!( joined, std::path::PathBuf::from( "/a/b/c" ) );
+  /// let paths = vec![ PathBuf::from( "" ), PathBuf::from( "a/b" ), PathBuf::from( "" ), PathBuf::from( "c" ), PathBuf::from( "" ) ];
+  /// let joined = path::join_paths( paths.iter().map( | p | p.as_path() ) );
+  /// assert_eq!( joined, std::path::PathBuf::from( PathBuf::from( "/a/b/c" ) ) );
   ///
   /// ```
+  // qqq : make macro paths_join!( ... )
   pub fn join_paths< 'a, I >( paths : I ) -> std::path::PathBuf
   where
-    I : Iterator< Item = &'a str >,
+    // AsPath : AsRef< std::path::Path >,
+    // I : Iterator< Item = AsPath >,
+    I : Iterator< Item = &'a std::path::Path >,
   {
     #[ cfg( feature = "no_std" ) ]
     extern crate alloc;
@@ -344,37 +335,39 @@ pub( crate ) mod private
 
     let mut result = String::new();
 
-    for path in paths {
-      let mut path = path.replace( '\\', "/" );
+    for path in paths
+    {
+      let mut path = path.to_string_lossy().replace( '\\', "/" );
       path = path.replace( ':', "" );
+      // qqq : this is a bug
 
       let mut added_slah = false;
 
       // If the path is empty, skip it
-      if path.is_empty() 
+      if path.is_empty()
       {
         continue;
       }
 
       // If the path starts with '/', clear the result and set it to '/'
-      if path.starts_with('/') 
+      if path.starts_with( '/' )
       {
         result.clear();
         result.push( '/' );
       }
       // If the result doesn't end with '/', append '/'
-      else if !result.ends_with( '/' ) 
+      else if !result.ends_with( '/' )
       {
         added_slah = true;
         result.push( '/' );
       }
       let components: Vec<&str> = path.split( '/' ).collect();
       // Split the path into components
-      for ( idx, component ) in components.clone().into_iter().enumerate() 
+      for ( idx, component ) in components.clone().into_iter().enumerate()
       {
-        match component 
+        match component
         {
-          "." => 
+          "." =>
           {
             if ( result.ends_with( '/' ) && components.len() > idx + 1 && components[ idx + 1 ].is_empty() )
             || components.len() == idx + 1
@@ -382,48 +375,48 @@ pub( crate ) mod private
               result.pop();
             }
           }
-          ".." => 
+          ".." =>
           {
-            if result != "/" 
+            if result != "/"
             {
-              if added_slah 
+              if added_slah
               {
                 result.pop();
                 added_slah = false;
               }
               let mut parts : Vec< _ > = result.split( '/' ).collect();
               parts.pop();
-              if let Some( part ) = parts.last() 
+              if let Some( part ) = parts.last()
               {
-                if part.is_empty() 
+                if part.is_empty()
                 {
                   parts.push( "" );
                 }
               }
               result = parts.join( "/" );
-              if result.is_empty() 
+              if result.is_empty()
               {
                 result.push( '/' );
               }
-            } else 
+            } else
             {
               result.push_str( &components[ idx.. ].to_vec().join( "/" ) );
               break;
             }
           }
-          _ => 
+          _ =>
           {
-            if !component.is_empty() 
+            if !component.is_empty()
             {
-              if result.ends_with( '/' ) 
+              if result.ends_with( '/' )
               {
                 result.push_str( component );
-              } else 
+              } else
               {
                 result.push( '/' );
                 result.push_str( component );
               }
-            } else if components.len() > idx + 1 && components[ idx + 1 ].is_empty() && path != "/" 
+            } else if components.len() > idx + 1 && components[ idx + 1 ].is_empty() && path != "/"
             {
               result.push( '/' );
             }
@@ -431,7 +424,7 @@ pub( crate ) mod private
         }
       }
 
-      if path.ends_with( '/' ) && result != "/" 
+      if path.ends_with( '/' ) && result != "/"
       {
         result.push( '/' );
       }
@@ -472,23 +465,25 @@ pub( crate ) mod private
   /// assert_eq!( extensions, expected );
   /// ```
   ///
-  pub fn exts( path : impl AsRef< std::path::Path > ) -> std::vec::Vec< std::string::String > 
+
+  // qqq : xxx : should return iterator
+  pub fn exts( path : impl AsRef< std::path::Path > ) -> std::vec::Vec< std::string::String >
   {
     #[ cfg( feature = "no_std" ) ]
     extern crate alloc;
     #[ cfg( feature = "no_std" ) ]
     use alloc::string::ToString;
 
-    if let Some( file_name ) = std::path::Path::new( path.as_ref() ).file_name() 
+    if let Some( file_name ) = std::path::Path::new( path.as_ref() ).file_name()
     {
-      if let Some( file_name_str ) = file_name.to_str() 
+      if let Some( file_name_str ) = file_name.to_str()
       {
         let mut file_name_str = file_name_str.to_string();
         if file_name_str.starts_with( '.' )
         {
           file_name_str.remove( 0 );
         }
-        if let Some( dot_index ) = file_name_str.find( '.' ) 
+        if let Some( dot_index ) = file_name_str.find( '.' )
         {
 
           let extensions = &file_name_str[ dot_index + 1.. ];
@@ -533,7 +528,7 @@ pub( crate ) mod private
   /// assert_eq!(modified_path, None);
   /// ```
   ///
-  pub fn without_ext( path : impl AsRef< std::path::Path > ) -> core::option::Option< std::path::PathBuf > 
+  pub fn without_ext( path : impl AsRef< std::path::Path > ) -> core::option::Option< std::path::PathBuf >
   {
     use std::path::{ Path, PathBuf };
     #[ cfg( feature = "no_std" ) ]
@@ -548,17 +543,17 @@ pub( crate ) mod private
 
     let path_buf = Path::new( path.as_ref() );
 
-    let parent = match path_buf.parent() 
+    let parent = match path_buf.parent()
     {
       Some( parent ) => parent,
       None => return None,
     };
-    let file_stem = match path_buf.file_stem() 
+    let file_stem = match path_buf.file_stem()
     {
-      Some( name ) => 
+      Some( name ) =>
       {
         let ends = format!( "{}/", name.to_string_lossy() );
-        if path.as_ref().to_string_lossy().ends_with( &ends ) 
+        if path.as_ref().to_string_lossy().ends_with( &ends )
         {
           ends
         }
@@ -612,19 +607,19 @@ pub( crate ) mod private
   /// assert_eq!( modified_path, None );
   /// ```
   ///
-  pub fn change_ext( path : impl AsRef< std::path::Path >, ext : &str ) -> Option< std::path::PathBuf > 
+  pub fn change_ext( path : impl AsRef< std::path::Path >, ext : &str ) -> Option< std::path::PathBuf >
   {
     use std::path::PathBuf;
-    if path.as_ref().to_string_lossy().is_empty() || !path.as_ref().to_string_lossy().is_ascii() || !ext.is_ascii() 
+    if path.as_ref().to_string_lossy().is_empty() || !path.as_ref().to_string_lossy().is_ascii() || !ext.is_ascii()
     {
       return None;
     }
 
     let without_ext = without_ext( path )?;
-    if ext.is_empty() 
+    if ext.is_empty()
     {
       Some( without_ext )
-    } else 
+    } else
     {
       Some( PathBuf::from( format!( "{}.{}", without_ext.to_string_lossy(), ext ) ) )
     }
@@ -654,9 +649,11 @@ pub( crate ) mod private
   /// assert_eq!( common_path, Some( "/a/b/".to_string() ) );
   /// ```
   ///
-  pub fn path_common< 'a, I >( paths : I ) -> Option< std::string::String > 
+
+  // xxx : qqq : should probably be PathBuf?
+  pub fn path_common< 'a, I >( paths : I ) -> Option< std::string::String >
   where
-    I: Iterator<Item = &'a str>,
+    I: Iterator< Item = &'a str >,
   {
     use std::collections::HashMap;
     #[ cfg( feature = "no_std" ) ]
@@ -665,18 +662,18 @@ pub( crate ) mod private
     use alloc::{ string::{ String, ToString }, vec::Vec };
 
     let orig_paths : Vec< String > = paths.map( | path | path.to_string() ).collect();
-  
-    if orig_paths.is_empty() 
+
+    if orig_paths.is_empty()
     {
       return None;
     }
 
     // Create a map to store directory frequencies
     let mut dir_freqs : HashMap< String, usize > = HashMap::new();
-      
+
     let mut paths = orig_paths.clone();
     // Iterate over paths to count directory frequencies
-    for path in paths.iter_mut() 
+    for path in paths.iter_mut()
     {
       path_remove_dots( path );
       path_remove_double_dots( path );
@@ -686,11 +683,11 @@ pub( crate ) mod private
       // Iterate over directories
       for i in 0..dirs.len()
       {
-        
+
         // Construct directory path
         let mut dir_path = dirs[ 0..i + 1 ].join( "/" );
 
-        
+
         // Increment frequency count
         *dir_freqs.entry( dir_path.clone() ).or_insert( 0 ) += 1;
 
@@ -712,10 +709,10 @@ pub( crate ) mod private
 
     let mut result = common_dir.to_string();
 
-    if result.is_empty() 
+    if result.is_empty()
     {
       if orig_paths.iter().any( | path | path.starts_with( '/' ) )
-      { 
+      {
         result.push( '/' );
       }
       else if orig_paths.iter().any( | path | path.starts_with( ".." ) )
@@ -743,10 +740,12 @@ pub( crate ) mod private
   ///
   /// * `path` - A mutable reference to a string representing the path to be cleaned.
   ///
-  fn path_remove_dots( path : &mut std::string::String ) 
+
+  // xxx : qqq : should probably be Path?
+  fn path_remove_dots( path : &mut std::string::String )
   {
     let mut cleaned_parts = vec![];
-    for part in path.split( '/' ) 
+    for part in path.split( '/' )
     {
       if part == "."
       {
@@ -766,7 +765,9 @@ pub( crate ) mod private
   ///
   /// * `path` - A mutable reference to a string representing the path to be cleaned.
   ///
-  fn path_remove_double_dots( path : &mut std::string::String ) 
+
+  // xxx : qqq : should probably be Path?
+  fn path_remove_double_dots( path : &mut std::string::String )
   {
     #[ cfg( feature = "no_std" ) ]
     extern crate alloc;
@@ -775,9 +776,9 @@ pub( crate ) mod private
 
     let mut cleaned_parts: Vec< &str > = Vec::new();
     let mut delete_empty_part = false;
-    for part in path.split( '/' ) 
+    for part in path.split( '/' )
     {
-      if part == ".." 
+      if part == ".."
       {
         if let Some( pop ) = cleaned_parts.pop()
         {
@@ -795,8 +796,8 @@ pub( crate ) mod private
         {
           cleaned_parts.push( ".." );
         }
-      } 
-      else 
+      }
+      else
       {
         cleaned_parts.push( part );
       }
@@ -809,7 +810,7 @@ pub( crate ) mod private
     {
       *path = cleaned_parts.join( "/" );
     }
-    
+
   }
 
   /// Rebase the file path relative to a new base path, optionally removing a common prefix.
@@ -849,7 +850,13 @@ pub( crate ) mod private
   /// assert_eq!( rebased_path, PathBuf::from( "/mnt/storage/documents/file.txt" ) );
   /// ```
   ///
-   pub fn rebase< T : AsRef< std::path::Path > >( file_path : T, new_path : T, old_path : Option< T > ) -> Option< std::path::PathBuf > 
+   pub fn rebase< T : AsRef< std::path::Path > >
+   (
+    file_path : T,
+    new_path : T,
+    old_path : Option< T >
+  )
+  -> Option< std::path::PathBuf >
   {
     use std::path::Path;
     use std::path::PathBuf;
@@ -858,7 +865,7 @@ pub( crate ) mod private
     if old_path.is_some()
     {
       let common = path_common( vec![ file_path.as_ref().to_str().unwrap(), old_path.unwrap().as_ref().to_str().unwrap() ].into_iter() )?;
-      
+
       main_file_path = match main_file_path.strip_prefix( common )
       {
         Ok( rel ) => rel,
@@ -896,7 +903,7 @@ pub( crate ) mod private
   /// let relative_path = proper_path_tools::path::path_relative( from, to );
   /// assert_eq!( relative_path, PathBuf::from( "../c/d" ) );
   /// ```
-  pub fn path_relative< T : AsRef< std::path::Path > >( from : T, to : T ) -> std::path::PathBuf 
+  pub fn path_relative< T : AsRef< std::path::Path > >( from : T, to : T ) -> std::path::PathBuf
   {
     use std::path::PathBuf;
     #[ cfg( feature = "no_std" ) ]
@@ -921,7 +928,7 @@ pub( crate ) mod private
     path_remove_double_dots( &mut to );
     path_remove_dots( &mut from );
     path_remove_dots( &mut to );
-    
+
     let mut from_parts: Vec< &str > = from.split( '/' ).collect();
     let mut to_parts: Vec< &str > = to.split( '/' ).collect();
     if from_parts.len() == 1 && from_parts[ 0 ].is_empty()
@@ -933,9 +940,9 @@ pub( crate ) mod private
       to_parts.pop();
     }
     let mut common_prefix = 0;
-    for ( idx, ( f, t ) ) in from_parts.iter().zip( to_parts.iter() ).enumerate() 
+    for ( idx, ( f, t ) ) in from_parts.iter().zip( to_parts.iter() ).enumerate()
     {
-      if f != t 
+      if f != t
       {
         break;
       }
@@ -943,13 +950,13 @@ pub( crate ) mod private
     }
     let mut result = Vec::new();
     // Add ".." for each directory not in common
-    for i in common_prefix..from_parts.len() 
+    for i in common_prefix..from_parts.len()
     {
-      if from_parts[ common_prefix ].is_empty() || 
-      ( 
-        i == from_parts.len() - 1 
+      if from_parts[ common_prefix ].is_empty() ||
+      (
+        i == from_parts.len() - 1
         && from_parts[ i ].is_empty()
-        && !to_parts.last().unwrap_or( &"" ).is_empty() 
+        && !to_parts.last().unwrap_or( &"" ).is_empty()
       )
       {
         continue;
@@ -957,7 +964,7 @@ pub( crate ) mod private
       result.push( ".." );
     }
     // Add the remaining directories from 'to'
-    for part in to_parts.iter().skip( common_prefix ) 
+    for part in to_parts.iter().skip( common_prefix )
     {
       result.push( *part );
     }
@@ -965,11 +972,11 @@ pub( crate ) mod private
     let mut relative_path = result.join( "/" );
     // If the relative path is empty or the 'to' path is the same as the 'from' path,
     // set the relative path to "."
-    if relative_path.is_empty() || from == to 
+    if relative_path.is_empty() || from == to
     {
       relative_path = ".".to_string();
     }
-    
+
     if to.ends_with( '/' ) && !relative_path.ends_with( '/' ) && to != "/"
     {
       relative_path.push( '/' );
@@ -985,9 +992,6 @@ pub( crate ) mod private
     PathBuf::from( relative_path )
   }
 
-
-
-
   /// Extracts the extension from the given path.
   ///
   /// This function takes a path and returns a string representing the extension of the file.
@@ -1019,7 +1023,7 @@ pub( crate ) mod private
   /// assert_eq!( extension, "" );
   /// ```
   ///
-  pub fn ext( path : impl AsRef< std::path::Path > ) -> std::string::String 
+  pub fn ext( path : impl AsRef< std::path::Path > ) -> std::string::String
   {
     use std::path::Path;
     #[ cfg( feature = "no_std" ) ]
@@ -1027,12 +1031,12 @@ pub( crate ) mod private
     #[ cfg( feature = "no_std" ) ]
     use alloc::string::{ String, ToString };
 
-    if path.as_ref().to_string_lossy().is_empty() 
+    if path.as_ref().to_string_lossy().is_empty()
     {
       return String::new();
     }
     let path_buf = Path::new( path.as_ref() );
-    match path_buf.extension() 
+    match path_buf.extension()
     {
       Some( ext ) => ext.to_string_lossy().to_string(),
       None => String::new(),
@@ -1040,22 +1044,31 @@ pub( crate ) mod private
   }
 }
 
-crate::mod_interface! {
-  protected use ext;
-  protected use exts;
-  protected use change_ext;
-  protected use path_relative;
-  protected use rebase;
-  protected use path_common;
-  protected use join_paths;
-  protected use without_ext;
-  protected use is_glob;
-  protected use normalize;
-  protected use canonicalize;
+crate::mod_interface!
+{
+
+  orphan use ext;
+  orphan use exts;
+  orphan use change_ext;
+  orphan use path_relative;
+  orphan use rebase;
+  orphan use path_common;
+  orphan use join_paths;
+  orphan use without_ext;
+  orphan use is_glob;
+  orphan use normalize;
+  orphan use canonicalize;
+
   #[ cfg( feature = "path_unique_folder_name" ) ]
-  protected use unique_folder_name;
+  orphan use unique_folder_name;
 
-  /// Describe absolute path. Prefer using absolute path instead of relative when ever possible.
+  /// Describe absolute path. Prefer using absolute path instead of relative paths when ever possible.
   layer absolute_path;
+  /// Describe canonical path. Prefer using canonical path instead of native paths when ever possible.
+  layer canonical_path;
+  /// A type to symbolyze the crruent path.
+  layer current_path;
+  /// Describe native path. Use to pass path to the platfrom.
+  layer native_path;
 
 }
diff --git a/module/core/proper_path_tools/src/path/absolute_path.rs b/module/core/proper_path_tools/src/path/absolute_path.rs
index 115c71d37b..ae9542d615 100644
--- a/module/core/proper_path_tools/src/path/absolute_path.rs
+++ b/module/core/proper_path_tools/src/path/absolute_path.rs
@@ -1,48 +1,120 @@
 /// Internal namespace.
 pub( crate ) mod private
 {
-  #[cfg(feature="no_std")]
-  extern crate std;
+
   use crate::*;
+
   use std::
   {
-    borrow::Cow,
-    fmt,
+    // borrow::Cow,
     path::{ Path, PathBuf },
+    io,
+  };
+
+  use core::
+  {
+    fmt,
+    ops::
+    {
+      Deref,
+      DerefMut,
+    },
   };
+
+  #[cfg(feature="no_std")]
+  extern crate std;
+
   #[ cfg( feature = "derive_serde" ) ]
   use serde::{ Serialize, Deserialize };
 
+  #[ cfg( feature = "path_utf8" ) ]
+  use camino::{ Utf8Path, Utf8PathBuf };
+
   /// Absolute path.
   #[ cfg_attr( feature = "derive_serde", derive( Serialize, Deserialize ) ) ]
   #[ derive( Debug, Default, Clone, Ord, PartialOrd, Eq, PartialEq, Hash ) ]
   pub struct AbsolutePath( PathBuf );
 
+  impl AbsolutePath
+  {
+
+    /// Returns the Path without its final component, if there is one.
+    /// Returns None if the path terminates in a root or prefix, or if it's the empty string.
+    #[ inline ]
+    pub fn parent( &self ) -> Option< AbsolutePath >
+    {
+      self.0.parent().map( PathBuf::from ).map( AbsolutePath )
+    }
+
+    /// Creates an owned `AbsolutePath` with path adjoined to self.
+    #[ inline ]
+    pub fn join< P >( &self, path : P ) -> AbsolutePath
+    where
+      P : AsRef< Path >,
+    {
+      Self::try_from( self.0.join( path ) ).unwrap()
+    }
+
+    // /// Converts a `AbsolutePath` to a `Cow<str>`
+    // pub fn to_string_lossy( &self ) -> Cow< '_, str >
+    // {
+    //   self.0.to_string_lossy()
+    // }
+
+    /// Determines whether base is a prefix of self.
+    ///
+    /// Only considers whole path components to match.
+    #[ inline ]
+    pub fn starts_with< P : AsRef< Path > >( &self, base : P ) -> bool
+    {
+      self.0.starts_with( base )
+    }
+
+    /// Returns inner type which is PathBuf.
+    #[ inline( always ) ]
+    pub fn inner( self ) -> PathBuf
+    {
+      self.0
+    }
+
+  }
+
   impl fmt::Display for AbsolutePath
   {
+    #[ inline ]
     fn fmt( &self, f : &mut fmt::Formatter<'_> ) -> fmt::Result
     {
       write!( f, "{}", self.0.display() )
     }
   }
 
-  impl< 'a > TryFrom< &'a str > for AbsolutePath
+  #[ inline ]
+  fn is_absolute( path : &Path ) -> bool
+  {
+    // None - not absolute
+    // with `.` or `..` at the first component - not absolute
+    !path.components().next().is_some_and( | c | c.as_os_str() == "." || c.as_os_str() == ".." )
+  }
+
+  impl TryFrom< PathBuf > for AbsolutePath
   {
     type Error = std::io::Error;
 
-    fn try_from( value : &'a str ) -> Result< Self, Self::Error >
+    #[ inline ]
+    fn try_from( src : PathBuf ) -> Result< Self, Self::Error >
     {
-      Ok( Self( path::canonicalize( value )? ) )
+      < Self as TryFrom< &Path > >::try_from( &src.as_path() )
     }
   }
 
-  impl TryFrom< PathBuf > for AbsolutePath
+  impl TryFrom< &PathBuf > for AbsolutePath
   {
     type Error = std::io::Error;
 
-    fn try_from( value : PathBuf ) -> Result< Self, Self::Error >
+    #[ inline ]
+    fn try_from( src : &PathBuf ) -> Result< Self, Self::Error >
     {
-      Ok( Self( path::canonicalize( value )? ) )
+      < Self as TryFrom< &Path > >::try_from( &src.as_path() )
     }
   }
 
@@ -51,28 +123,123 @@ pub( crate ) mod private
   {
     type Error = std::io::Error;
 
-    fn try_from( value : &Path ) -> Result< Self, Self::Error >
+    #[ inline ]
+    fn try_from( src : &Path ) -> Result< Self, Self::Error >
+    {
+      // < Self as TryFrom< &str > >::try_from( src.to_string_lossy() )
+      let path = path::canonicalize( src )?;
+
+      // xxx
+      if !is_absolute( &path )
+      {
+        return Err( io::Error::new( io::ErrorKind::InvalidData, "Path expected to be absolute, but it's not {path}" ) )
+      }
+
+      Ok( Self( path ) )
+    }
+  }
+
+  impl< 'a > TryFrom< &'a str > for AbsolutePath
+  {
+    type Error = std::io::Error;
+
+    #[ inline ]
+    fn try_from( src : &'a str ) -> Result< Self, Self::Error >
+    {
+      < Self as TryFrom< &Path > >::try_from( src.as_ref() )
+    }
+  }
+
+//   impl TryFrom< &str > for AbsolutePath
+//   {
+//     type Error = std::io::Error;
+//     // type Error = PathError;
+//
+//     #[ inline( always ) ]
+//     fn try_from( src : &str ) -> Result< Self, Self::Error >
+//     {
+//       Self::try_from( AbsolutePath::try_from( src )? )
+//     }
+//   }
+
+  #[ cfg( feature = "path_utf8" ) ]
+  impl TryFrom< Utf8PathBuf > for AbsolutePath
+  {
+    type Error = std::io::Error;
+
+    #[ inline ]
+    fn try_from( src : Utf8PathBuf ) -> Result< Self, Self::Error >
     {
-      Ok( Self( path::canonicalize( value )? ) )
+      AbsolutePath::try_from( src.as_std_path() )
     }
   }
 
-  impl From< AbsolutePath > for PathBuf 
+  #[ cfg( feature = "path_utf8" ) ]
+  impl TryFrom< &Utf8PathBuf > for AbsolutePath
   {
-    fn from( abs_path: AbsolutePath ) -> Self 
+    type Error = std::io::Error;
+
+    #[ inline ]
+    fn try_from( src : &Utf8PathBuf ) -> Result< Self, Self::Error >
     {
-      abs_path.0
+      AbsolutePath::try_from( src.as_std_path() )
     }
   }
 
+  #[ cfg( feature = "path_utf8" ) ]
+  impl TryFrom< &Utf8Path > for AbsolutePath
+  {
+    type Error = std::io::Error;
+
+    #[ inline ]
+    fn try_from( src : &Utf8Path ) -> Result< Self, Self::Error >
+    {
+      AbsolutePath::try_from( src.as_std_path() )
+    }
+  }
+
+  impl From< AbsolutePath > for PathBuf
+  {
+    #[ inline ]
+    fn from( src : AbsolutePath ) -> Self
+    {
+      src.0
+    }
+  }
+
+  impl< 'a > TryFrom< &'a AbsolutePath > for &'a str
+  {
+    type Error = std::io::Error;
+    #[ inline ]
+    fn try_from( src : &'a AbsolutePath ) -> Result< &'a str, Self::Error >
+    {
+      src
+      .to_str()
+      .ok_or_else
+      (
+        move || io::Error::new( io::ErrorKind::Other, format!( "Can't convert &PathBuf into &str {src}" ) )
+      )
+    }
+  }
+
+  impl TryFrom< &AbsolutePath > for String
+  {
+    type Error = std::io::Error;
+    #[ inline ]
+    fn try_from( src : &AbsolutePath ) -> Result< String, Self::Error >
+    {
+      let src2 : &str = src.try_into()?;
+      Ok( src2.into() )
+    }
+  }
 
 //   impl TryFrom< Utf8PathBuf > for AbsolutePath
 //   {
 //     type Error = std::io::Error;
 //
-//     fn try_from( value : Utf8PathBuf ) -> Result< Self, Self::Error >
+//     fn try_from( src : Utf8PathBuf ) -> Result< Self, Self::Error >
 //     {
-//       AbsolutePath::try_from( value.as_std_path() )
+//       AbsolutePath::try_from( src.as_std_path() )
 //     }
 //   }
 
@@ -80,49 +247,93 @@ pub( crate ) mod private
 //   {
 //     type Error = std::io::Error;
 //
-//     fn try_from( value : &Utf8Path ) -> Result< Self, Self::Error >
+//     fn try_from( src : &Utf8Path ) -> Result< Self, Self::Error >
 //     {
-//       AbsolutePath::try_from( value.as_std_path() )
+//       AbsolutePath::try_from( src.as_std_path() )
 //     }
 //   }
 
-  // xxx : use derives
+  // // xxx : use derives
+  // impl AsRef< Path > for AbsolutePath
+  // {
+  //   fn as_ref( &self ) -> &Path
+  //   {
+  //     self.0.as_ref()
+  //   }
+  // }
+
   impl AsRef< Path > for AbsolutePath
   {
+    #[ inline ]
     fn as_ref( &self ) -> &Path
     {
       self.0.as_ref()
     }
   }
 
-  impl AbsolutePath
+  impl AsMut< Path > for AbsolutePath
   {
-    /// Returns the Path without its final component, if there is one.
-    /// Returns None if the path terminates in a root or prefix, or if it's the empty string.
-    pub fn parent( &self ) -> Option< AbsolutePath >
+    #[ inline ]
+    fn as_mut( &mut self ) -> &mut Path
     {
-      self.0.parent().map( PathBuf::from ).map( AbsolutePath )
+      &mut self.0
     }
+  }
 
-    /// Creates an owned `AbsolutePath` with path adjoined to self.
-    pub fn join< P >( &self, path : P ) -> AbsolutePath
-    where
-      P : AsRef< Path >,
+  impl Deref for AbsolutePath
+  {
+    type Target = Path;
+    #[ inline ]
+    fn deref( &self ) -> &Self::Target
     {
-      Self::try_from( self.0.join( path ) ).unwrap()
+      &self.0
     }
+  }
 
-    /// Converts a `AbsolutePath` to a `Cow<str>`
-    pub fn to_string_lossy( &self ) -> Cow< '_, str >
+  impl DerefMut for AbsolutePath
+  {
+    #[ inline ]
+    fn deref_mut( &mut self ) -> &mut Self::Target
     {
-      self.0.to_string_lossy()
+      &mut self.0
     }
-
   }
 
+//   /// Convertable into absolute path entity should implement the trait.
+//   pub trait TryIntoAbsolutePath
+//   {
+//     /// Error returned if conversion is failed.
+//     type Error;
+//     /// Method to convert the type into absolute path.
+//     fn into_absolute_path( self ) -> Result< AbsolutePath, Self::Error >;
+//   }
+//
+//   // impl TryIntoAbsolutePath for AbsolutePath
+//   // {
+//   //   type Error = std::io::Error;
+//   //   #[ inline ]
+//   //   fn into_absolute_path( self ) -> Result< AbsolutePath, Self::Error >
+//   //   {
+//   //     Ok( self )
+//   //   }
+//   // }
+//
+//   impl< TryIntoAbsolutePathType > TryIntoAbsolutePath for TryIntoAbsolutePathType
+//   where
+//     TryIntoAbsolutePathType : TryInto< AbsolutePath >,
+//   {
+//     type Error = < Self as TryInto< AbsolutePath > >::Error;
+//     #[ inline ]
+//     fn into_absolute_path( self ) -> Result< AbsolutePath, Self::Error >
+//     {
+//       self.try_into()
+//     }
+//   }
+
 }
 
 crate::mod_interface!
 {
   exposed use AbsolutePath;
+  // exposed use TryIntoAbsolutePath;
 }
diff --git a/module/core/proper_path_tools/src/path/canonical_path.rs b/module/core/proper_path_tools/src/path/canonical_path.rs
new file mode 100644
index 0000000000..b02c2dccbb
--- /dev/null
+++ b/module/core/proper_path_tools/src/path/canonical_path.rs
@@ -0,0 +1,287 @@
+/// Internal namespace.
+pub( crate ) mod private
+{
+
+  use crate::*;
+
+  use std::
+  {
+    // borrow::Cow,
+    path::{ Path, PathBuf },
+    io,
+  };
+
+  use core::
+  {
+    fmt,
+    ops::
+    {
+      Deref,
+      DerefMut,
+    },
+  };
+
+  #[cfg(feature="no_std")]
+  extern crate std;
+
+  #[ cfg( feature = "derive_serde" ) ]
+  use serde::{ Serialize, Deserialize };
+
+  #[ cfg( feature = "path_utf8" ) ]
+  use camino::{ Utf8Path, Utf8PathBuf };
+
+  /// Caninical path.
+  #[ cfg_attr( feature = "derive_serde", derive( Serialize, Deserialize ) ) ]
+  #[ derive( Debug, Default, Clone, Ord, PartialOrd, Eq, PartialEq, Hash ) ]
+  pub struct CanonicalPath( PathBuf );
+
+  impl CanonicalPath
+  {
+
+    /// Returns the Path without its final component, if there is one.
+    /// Returns None if the path terminates in a root or prefix, or if it's the empty string.
+    #[ inline ]
+    pub fn parent( &self ) -> Option< CanonicalPath >
+    {
+      self.0.parent().map( PathBuf::from ).map( CanonicalPath )
+    }
+
+    /// Creates an owned `CanonicalPath` with path adjoined to self.
+    #[ inline ]
+    pub fn join< P >( &self, path : P ) -> CanonicalPath
+    where
+      P : AsRef< Path >,
+    {
+      Self::try_from( self.0.join( path ) ).unwrap()
+    }
+
+    // /// Converts a `CanonicalPath` to a `Cow<str>`
+    // pub fn to_string_lossy( &self ) -> Cow< '_, str >
+    // {
+    //   self.0.to_string_lossy()
+    // }
+
+    /// Determines whether base is a prefix of self.
+    ///
+    /// Only considers whole path components to match.
+    #[ inline ]
+    pub fn starts_with< P : AsRef< Path > >( &self, base : P ) -> bool
+    {
+      self.0.starts_with( base )
+    }
+
+    /// Returns inner type which is PathBuf.
+    #[ inline( always ) ]
+    pub fn inner( self ) -> PathBuf
+    {
+      self.0
+    }
+
+  }
+
+  impl fmt::Display for CanonicalPath
+  {
+    #[ inline ]
+    fn fmt( &self, f : &mut fmt::Formatter<'_> ) -> fmt::Result
+    {
+      write!( f, "{}", self.0.display() )
+    }
+  }
+
+  // fn is_absolute( path : &Path ) -> bool
+  // {
+  //   // None - not absolute
+  //   // with `.` or `..` at the first component - not absolute
+  //   !path.components().next().is_some_and( | c | c.as_os_str() == "." || c.as_os_str() == ".." )
+  // }
+
+  impl< 'a > TryFrom< &'a str > for CanonicalPath
+  {
+    type Error = std::io::Error;
+
+    #[ inline ]
+    fn try_from( value : &'a str ) -> Result< Self, Self::Error >
+    {
+      let path = path::canonicalize( value )?;
+      // if !is_absolute( &path )
+      // {
+      //   return Err( io::Error::new( io::ErrorKind::InvalidData, "Path expected to be absolute" ) )
+      // }
+      Ok( Self( path ) )
+    }
+  }
+
+  impl TryFrom< PathBuf > for CanonicalPath
+  {
+    type Error = std::io::Error;
+
+    #[ inline ]
+    fn try_from( value : PathBuf ) -> Result< Self, Self::Error >
+    {
+      let path = path::canonicalize( value )?;
+
+      // if !is_absolute( &path ) { return Err( io::Error::new( io::ErrorKind::InvalidData, "Path expected to be absolute" ) ) }
+
+      Ok( Self( path ) )
+    }
+  }
+
+  // xxx : qqq : use Into< Path >
+  impl TryFrom< &Path > for CanonicalPath
+  {
+    type Error = std::io::Error;
+
+    #[ inline ]
+    fn try_from( value : &Path ) -> Result< Self, Self::Error >
+    {
+      let path = path::canonicalize( value )?;
+
+      // if !is_absolute( &path ) { return Err( io::Error::new( io::ErrorKind::InvalidData, "Path expected to be absolute" ) ) }
+
+      Ok( Self( path ) )
+    }
+  }
+
+  #[ cfg( feature = "path_utf8" ) ]
+  impl TryFrom< Utf8PathBuf > for CanonicalPath
+  {
+    type Error = std::io::Error;
+
+    #[ inline ]
+    fn try_from( value : Utf8PathBuf ) -> Result< Self, Self::Error >
+    {
+      CanonicalPath::try_from( value.as_std_path() )
+    }
+  }
+
+  #[ cfg( feature = "path_utf8" ) ]
+  impl TryFrom< &Utf8PathBuf > for CanonicalPath
+  {
+    type Error = std::io::Error;
+
+    #[ inline ]
+    fn try_from( value : &Utf8PathBuf ) -> Result< Self, Self::Error >
+    {
+      CanonicalPath::try_from( value.as_std_path() )
+    }
+  }
+
+  #[ cfg( feature = "path_utf8" ) ]
+  impl TryFrom< &Utf8Path > for CanonicalPath
+  {
+    type Error = std::io::Error;
+
+    #[ inline ]
+    fn try_from( value : &Utf8Path ) -> Result< Self, Self::Error >
+    {
+      CanonicalPath::try_from( value.as_std_path() )
+    }
+  }
+
+  impl From< CanonicalPath > for PathBuf
+  {
+    #[ inline ]
+    fn from( src : CanonicalPath ) -> Self
+    {
+      src.0
+    }
+  }
+
+  impl< 'a > TryFrom< &'a CanonicalPath > for &'a str
+  {
+    type Error = std::io::Error;
+    #[ inline ]
+    fn try_from( src : &'a CanonicalPath ) -> Result< &'a str, Self::Error >
+    {
+      src
+      .to_str()
+      .ok_or_else
+      (
+        move || io::Error::new( io::ErrorKind::Other, format!( "Can't convert &PathBuf into &str {src}" ) )
+      )
+    }
+  }
+
+  impl TryFrom< &CanonicalPath > for String
+  {
+    type Error = std::io::Error;
+    #[ inline ]
+    fn try_from( src : &CanonicalPath ) -> Result< String, Self::Error >
+    {
+      let src2 : &str = src.try_into()?;
+      Ok( src2.into() )
+    }
+  }
+
+//   impl TryFrom< Utf8PathBuf > for CanonicalPath
+//   {
+//     type Error = std::io::Error;
+//
+//     fn try_from( value : Utf8PathBuf ) -> Result< Self, Self::Error >
+//     {
+//       CanonicalPath::try_from( value.as_std_path() )
+//     }
+//   }
+
+//   impl TryFrom< &Utf8Path > for CanonicalPath
+//   {
+//     type Error = std::io::Error;
+//
+//     fn try_from( value : &Utf8Path ) -> Result< Self, Self::Error >
+//     {
+//       CanonicalPath::try_from( value.as_std_path() )
+//     }
+//   }
+
+  // // xxx : use derives
+  // impl AsRef< Path > for CanonicalPath
+  // {
+  //   fn as_ref( &self ) -> &Path
+  //   {
+  //     self.0.as_ref()
+  //   }
+  // }
+
+  impl AsRef< Path > for CanonicalPath
+  {
+    #[ inline ]
+    fn as_ref( &self ) -> &Path
+    {
+      self.0.as_ref()
+    }
+  }
+
+  impl AsMut< Path > for CanonicalPath
+  {
+    #[ inline ]
+    fn as_mut( &mut self ) -> &mut Path
+    {
+      &mut self.0
+    }
+  }
+
+  impl Deref for CanonicalPath
+  {
+    type Target = Path;
+    #[ inline ]
+    fn deref( &self ) -> &Self::Target
+    {
+      &self.0
+    }
+  }
+
+  impl DerefMut for CanonicalPath
+  {
+    #[ inline ]
+    fn deref_mut( &mut self ) -> &mut Self::Target
+    {
+      &mut self.0
+    }
+  }
+
+}
+
+crate::mod_interface!
+{
+  exposed use CanonicalPath;
+}
diff --git a/module/core/proper_path_tools/src/path/current_path.rs b/module/core/proper_path_tools/src/path/current_path.rs
new file mode 100644
index 0000000000..fe5c164242
--- /dev/null
+++ b/module/core/proper_path_tools/src/path/current_path.rs
@@ -0,0 +1,62 @@
+/// Internal namespace.
+pub( crate ) mod private
+{
+
+  use crate::*;
+  use std::env;
+
+  /// Symbolize current path.
+  #[ derive( Clone, Copy, Debug, Default, PartialEq, Eq ) ]
+  pub struct CurrentPath;
+
+  #[ cfg( feature = "path_utf8" ) ]
+  impl TryFrom< CurrentPath > for Utf8PathBuf
+  {
+    type Error = std::io::Error;
+
+    #[ inline ]
+    fn try_from( src : CurrentPath ) -> Result< Self, Self::Error >
+    {
+      Utf8PathBuf::try_from( PathBuf::try_from( src )? )
+      .map_err
+      (
+        | err |
+        {
+          std::io::Error::new
+          (
+            std::io::ErrorKind::NotFound,
+            format!( "Cant convert to utf8 {}", err ),
+          )
+        }
+      )
+    }
+  }
+
+  impl TryFrom< CurrentPath > for PathBuf
+  {
+    type Error = std::io::Error;
+
+    #[ inline ]
+    fn try_from( _ : CurrentPath ) -> Result< Self, Self::Error >
+    {
+      env::current_dir()
+    }
+  }
+
+  impl TryFrom< CurrentPath > for AbsolutePath
+  {
+    type Error = std::io::Error;
+
+    #[ inline ]
+    fn try_from( src : CurrentPath ) -> Result< Self, Self::Error >
+    {
+      AbsolutePath::try_from( PathBuf::try_from( src )? )
+    }
+  }
+
+}
+
+crate::mod_interface!
+{
+  exposed use CurrentPath;
+}
diff --git a/module/core/proper_path_tools/src/path/native_path.rs b/module/core/proper_path_tools/src/path/native_path.rs
new file mode 100644
index 0000000000..d192cc6966
--- /dev/null
+++ b/module/core/proper_path_tools/src/path/native_path.rs
@@ -0,0 +1,302 @@
+/// Internal namespace.
+pub( crate ) mod private
+{
+
+  use crate::*;
+
+  use std::
+  {
+    // borrow::Cow,
+    path::{ Path, PathBuf },
+    io,
+  };
+
+  use core::
+  {
+    fmt,
+    ops::
+    {
+      Deref,
+      DerefMut,
+    },
+  };
+
+  #[cfg(feature="no_std")]
+  extern crate std;
+
+  #[ cfg( feature = "derive_serde" ) ]
+  use serde::{ Serialize, Deserialize };
+
+  #[ cfg( feature = "path_utf8" ) ]
+  use camino::{ Utf8Path, Utf8PathBuf };
+
+  /// Caninical path.
+  #[ cfg_attr( feature = "derive_serde", derive( Serialize, Deserialize ) ) ]
+  #[ derive( Debug, Default, Clone, Ord, PartialOrd, Eq, PartialEq, Hash ) ]
+  pub struct NativePath( PathBuf );
+
+  impl NativePath
+  {
+
+    /// Returns the Path without its final component, if there is one.
+    /// Returns None if the path terminates in a root or prefix, or if it's the empty string.
+    #[ inline ]
+    pub fn parent( &self ) -> Option< NativePath >
+    {
+      self.0.parent().map( PathBuf::from ).map( NativePath )
+    }
+
+    /// Creates an owned `NativePath` with path adjoined to self.
+    #[ inline ]
+    pub fn join< P >( &self, path : P ) -> NativePath
+    where
+      P : AsRef< Path >,
+    {
+      Self::try_from( self.0.join( path ) ).unwrap()
+    }
+
+    // /// Converts a `NativePath` to a `Cow<str>`
+    // pub fn to_string_lossy( &self ) -> Cow< '_, str >
+    // {
+    //   self.0.to_string_lossy()
+    // }
+
+    /// Determines whether base is a prefix of self.
+    ///
+    /// Only considers whole path components to match.
+    #[ inline ]
+    pub fn starts_with< P : AsRef< Path > >( &self, base : P ) -> bool
+    {
+      self.0.starts_with( base )
+    }
+
+    /// Returns inner type which is PathBuf.
+    #[ inline( always ) ]
+    pub fn inner( self ) -> PathBuf
+    {
+      self.0
+    }
+
+  }
+
+  impl fmt::Display for NativePath
+  {
+    #[ inline ]
+    fn fmt( &self, f : &mut fmt::Formatter<'_> ) -> fmt::Result
+    {
+      write!( f, "{}", self.0.display() )
+    }
+  }
+
+  // fn is_absolute( path : &Path ) -> bool
+  // {
+  //   // None - not absolute
+  //   // with `.` or `..` at the first component - not absolute
+  //   !path.components().next().is_some_and( | c | c.as_os_str() == "." || c.as_os_str() == ".." )
+  // }
+
+  impl< 'a > TryFrom< &'a str > for NativePath
+  {
+    type Error = std::io::Error;
+
+    #[ inline ]
+    fn try_from( value : &'a str ) -> Result< Self, Self::Error >
+    {
+      let path = path::canonicalize( value )?;
+      // if !is_absolute( &path )
+      // {
+      //   return Err( io::Error::new( io::ErrorKind::InvalidData, "Path expected to be absolute" ) )
+      // }
+      Ok( Self( path ) )
+    }
+  }
+
+  impl TryFrom< PathBuf > for NativePath
+  {
+    type Error = std::io::Error;
+
+    #[ inline ]
+    fn try_from( value : PathBuf ) -> Result< Self, Self::Error >
+    {
+      let path = path::canonicalize( value )?;
+
+      // if !is_absolute( &path ) { return Err( io::Error::new( io::ErrorKind::InvalidData, "Path expected to be absolute" ) ) }
+
+      Ok( Self( path ) )
+    }
+  }
+
+  impl TryFrom< &PathBuf > for NativePath
+  {
+    type Error = std::io::Error;
+
+    #[ inline ]
+    fn try_from( value : &PathBuf ) -> Result< Self, Self::Error >
+    {
+      let path = path::canonicalize( value )?;
+
+      // if !is_absolute( &path ) { return Err( io::Error::new( io::ErrorKind::InvalidData, "Path expected to be absolute" ) ) }
+
+      Ok( Self( path ) )
+    }
+  }
+
+  // xxx : qqq : use Into< Path >
+  impl TryFrom< &Path > for NativePath
+  {
+    type Error = std::io::Error;
+
+    #[ inline ]
+    fn try_from( value : &Path ) -> Result< Self, Self::Error >
+    {
+      let path = path::canonicalize( value )?;
+
+      // if !is_absolute( &path ) { return Err( io::Error::new( io::ErrorKind::InvalidData, "Path expected to be absolute" ) ) }
+
+      Ok( Self( path ) )
+    }
+  }
+
+  #[ cfg( feature = "path_utf8" ) ]
+  impl TryFrom< Utf8PathBuf > for NativePath
+  {
+    type Error = std::io::Error;
+
+    #[ inline ]
+    fn try_from( value : Utf8PathBuf ) -> Result< Self, Self::Error >
+    {
+      NativePath::try_from( value.as_std_path() )
+    }
+  }
+
+  #[ cfg( feature = "path_utf8" ) ]
+  impl TryFrom< &Utf8PathBuf > for NativePath
+  {
+    type Error = std::io::Error;
+
+    #[ inline ]
+    fn try_from( value : &Utf8PathBuf ) -> Result< Self, Self::Error >
+    {
+      NativePath::try_from( value.as_std_path() )
+    }
+  }
+
+  #[ cfg( feature = "path_utf8" ) ]
+  impl TryFrom< &Utf8Path > for NativePath
+  {
+    type Error = std::io::Error;
+
+    #[ inline ]
+    fn try_from( value : &Utf8Path ) -> Result< Self, Self::Error >
+    {
+      NativePath::try_from( value.as_std_path() )
+    }
+  }
+
+  impl From< NativePath > for PathBuf
+  {
+    #[ inline ]
+    fn from( src : NativePath ) -> Self
+    {
+      src.0
+    }
+  }
+
+  impl< 'a > TryFrom< &'a NativePath > for &'a str
+  {
+    type Error = std::io::Error;
+    #[ inline ]
+    fn try_from( src : &'a NativePath ) -> Result< &'a str, Self::Error >
+    {
+      src
+      .to_str()
+      .ok_or_else
+      (
+        move || io::Error::new( io::ErrorKind::Other, format!( "Can't convert &PathBuf into &str {src}" ) )
+      )
+    }
+  }
+
+  impl TryFrom< &NativePath > for String
+  {
+    type Error = std::io::Error;
+    #[ inline ]
+    fn try_from( src : &NativePath ) -> Result< String, Self::Error >
+    {
+      let src2 : &str = src.try_into()?;
+      Ok( src2.into() )
+    }
+  }
+
+//   impl TryFrom< Utf8PathBuf > for NativePath
+//   {
+//     type Error = std::io::Error;
+//
+//     fn try_from( value : Utf8PathBuf ) -> Result< Self, Self::Error >
+//     {
+//       NativePath::try_from( value.as_std_path() )
+//     }
+//   }
+
+//   impl TryFrom< &Utf8Path > for NativePath
+//   {
+//     type Error = std::io::Error;
+//
+//     fn try_from( value : &Utf8Path ) -> Result< Self, Self::Error >
+//     {
+//       NativePath::try_from( value.as_std_path() )
+//     }
+//   }
+
+  // // xxx : use derives
+  // impl AsRef< Path > for NativePath
+  // {
+  //   fn as_ref( &self ) -> &Path
+  //   {
+  //     self.0.as_ref()
+  //   }
+  // }
+
+  impl AsRef< Path > for NativePath
+  {
+    #[ inline ]
+    fn as_ref( &self ) -> &Path
+    {
+      self.0.as_ref()
+    }
+  }
+
+  impl AsMut< Path > for NativePath
+  {
+    #[ inline ]
+    fn as_mut( &mut self ) -> &mut Path
+    {
+      &mut self.0
+    }
+  }
+
+  impl Deref for NativePath
+  {
+    type Target = Path;
+    #[ inline ]
+    fn deref( &self ) -> &Self::Target
+    {
+      &self.0
+    }
+  }
+
+  impl DerefMut for NativePath
+  {
+    #[ inline ]
+    fn deref_mut( &mut self ) -> &mut Self::Target
+    {
+      &mut self.0
+    }
+  }
+
+}
+
+crate::mod_interface!
+{
+  exposed use NativePath;
+}
diff --git a/module/core/proper_path_tools/src/transitive.rs b/module/core/proper_path_tools/src/transitive.rs
new file mode 100644
index 0000000000..a5bdd22627
--- /dev/null
+++ b/module/core/proper_path_tools/src/transitive.rs
@@ -0,0 +1,201 @@
+/// Internal namespace.
+pub( crate ) mod private
+{
+  // xxx : move to derive_tools
+
+  // qqq : write tests, lool into example
+  //
+  // impl< Initial > TransitiveTryFrom< AbsolutePath, PathError, Initial >
+  // for CrateDir
+  // where
+  //   AbsolutePath : TryFrom< Initial >,
+  //   PathError : From< < AbsolutePath as TryFrom< Initial > >::Error >,
+  // {
+  // }
+
+  // qqq : implement transitive_from
+  // qqq : implement transitive_into
+
+  // qqq : move to derive_tools
+  // qqq : write tests, look into example
+  //
+  // impl< Initial > TransitiveTryFrom< AbsolutePath, PathError, Initial >
+  // for CrateDir
+  // where
+  //   AbsolutePath : TryFrom< Initial >,
+  //   PathError : From< < AbsolutePath as TryFrom< Initial > >::Error >,
+  // {
+  // }
+  // qqq : implement transitive_try_into
+  // qqq : implement transitive_from
+  // qqq : implement transitive_into
+
+  /// A trait to perform a transitive `try_from` conversion.
+  ///
+  /// This trait allows for a two-step conversion process where an initial type `Initial`
+  /// is first converted to an intermediate type `Transitive`, and then to the final type `Self`.
+  ///
+  /// # Type Parameters
+  ///
+  /// - `Error`: The error type that can be produced during the conversion.
+  /// - `Initial`: The initial type from which the conversion starts.
+  ///
+  /// # Requirements
+  ///
+  /// - `Transitive` must implement `TryFrom<Initial>`.
+  /// - `Self` must implement `TryFrom<Transitive>` with the same error type.
+  /// - `Error` must implement `From<<Transitive as TryFrom<Initial>>::Error>`.
+  ///
+  /// # Example
+  ///
+  /// ```rust
+  /// use proper_path_tools::TransitiveTryFrom;
+  /// use std::convert::TryFrom;
+  ///
+  /// struct InitialType;
+  /// struct IntermediateType;
+  /// struct FinalType;
+  /// struct ConversionError;
+  ///
+  /// impl TryFrom< InitialType > for IntermediateType
+  /// {
+  ///   type Error = ConversionError;
+  ///   fn try_from( value : InitialType ) -> Result< Self, Self::Error >
+  ///   {
+  ///     // Conversion logic here
+  ///     Ok( IntermediateType )
+  ///   }
+  /// }
+  ///
+  /// impl TryFrom< IntermediateType > for FinalType
+  /// {
+  ///   type Error = ConversionError;
+  ///   fn try_from( value : IntermediateType ) -> Result< Self, Self::Error >
+  ///   {
+  ///     // Conversion logic here
+  ///     Ok( FinalType )
+  ///   }
+  /// }
+  ///
+  /// let initial = InitialType;
+  /// let final_result : Result< FinalType, ConversionError > = FinalType::transitive_try_from::< IntermediateType >( initial );
+  /// ```
+  pub trait TransitiveTryFrom< Error, Initial >
+  {
+    /// Performs a transitive `try_from` conversion.
+    ///
+    /// This method first converts the `src` of type `Initial` to the intermediate type `Transitive`,
+    /// and then converts the intermediate type to the final type `Self`.
+    ///
+    /// # Arguments
+    ///
+    /// - `src`: The initial value to be converted.
+    ///
+    /// # Returns
+    ///
+    /// - `Ok(Self)`: If both conversions succeed.
+    /// - `Err(Error)`: If either conversion fails.
+    ///
+    /// # Example
+    ///
+    /// See the trait-level documentation for an example.
+    #[ inline( always ) ]
+    fn transitive_try_from< Transitive >( src : Initial ) -> Result< Self, Error >
+    where
+      Transitive : TryFrom< Initial >,
+      Self : TryFrom< Transitive, Error = Error >,
+      Error : From< < Transitive as TryFrom< Initial > >::Error >,
+    {
+      let src2 = TryFrom::< Initial >::try_from( src )?;
+      TryFrom::< Transitive >::try_from( src2 )
+    }
+  }
+
+  impl< Initial, Error, Final > TransitiveTryFrom< Error, Initial > for Final {}
+
+  /// A trait to perform a transitive `try_into` conversion.
+  ///
+  /// This trait allows for a two-step conversion process where an initial type `Self`
+  /// is first converted to an intermediate type `Transitive`, and then to the final type `Final`.
+  ///
+  /// # Type Parameters
+  ///
+  /// - `Error`: The error type that can be produced during the conversion.
+  /// - `Final`: The final type to which `Transitive` is converted.
+  ///
+  /// # Requirements
+  ///
+  /// - `Self` must implement `TryInto<Transitive>`.
+  /// - `Transitive` must implement `TryInto<Final>` with the same error type.
+  /// - `Error` must implement `From<<Self as TryInto<Transitive>>::Error>`.
+  ///
+  /// # Example
+  ///
+  /// ```rust
+  /// use proper_path_tools::TransitiveTryInto;
+  /// use std::convert::TryInto;
+  ///
+  /// struct InitialType;
+  /// struct IntermediateType;
+  /// struct FinalType;
+  /// struct ConversionError;
+  ///
+  /// impl TryInto< IntermediateType > for InitialType
+  /// {
+  ///   type Error = ConversionError;
+  ///   fn try_into( self ) -> Result< IntermediateType, Self::Error >
+  ///   {
+  ///     // Conversion logic here
+  ///     Ok( IntermediateType )
+  ///   }
+  /// }
+  ///
+  /// impl TryInto< FinalType > for IntermediateType
+  /// {
+  ///   type Error = ConversionError;
+  ///   fn try_into( self ) -> Result< FinalType, Self::Error >
+  ///   {
+  ///     // Conversion logic here
+  ///     Ok( FinalType )
+  ///   }
+  /// }
+  ///
+  /// let initial = InitialType;
+  /// let final_result : Result< FinalType, ConversionError > = initial.transitive_try_into::< IntermediateType >();
+  /// ```
+  pub trait TransitiveTryInto< Error, Final > : Sized
+  {
+    /// Performs a transitive `try_into` conversion.
+    ///
+    /// This method first converts `self` to the intermediate type `Transitive`,
+    /// and then converts the intermediate type to the final type `Final`.
+    ///
+    /// # Returns
+    ///
+    /// - `Ok(Final)`: If both conversions succeed.
+    /// - `Err(Error)`: If either conversion fails.
+    ///
+    /// # Example
+    ///
+    /// See the trait-level documentation for an example.
+    #[ inline( always ) ]
+    fn transitive_try_into< Transitive >( self ) -> Result< Final, Error >
+    where
+      Self : TryInto< Transitive >,
+      Transitive : TryInto< Final, Error = Error >,
+      Error : From< < Self as TryInto< Transitive > >::Error >,
+    {
+      let src2 = TryInto::< Transitive >::try_into( self )?;
+      TryInto::< Final >::try_into( src2 )
+    }
+  }
+
+  impl< Error, Final, Initial > TransitiveTryInto< Error, Final > for Initial {}
+
+}
+
+crate::mod_interface!
+{
+  exposed use TransitiveTryFrom;
+  exposed use TransitiveTryInto;
+}
diff --git a/module/core/proper_path_tools/tests/inc/absolute_path.rs b/module/core/proper_path_tools/tests/inc/absolute_path.rs
index 9ef2c83a5f..247be8c4b4 100644
--- a/module/core/proper_path_tools/tests/inc/absolute_path.rs
+++ b/module/core/proper_path_tools/tests/inc/absolute_path.rs
@@ -1,8 +1,15 @@
 #[ allow( unused_imports ) ]
 use super::*;
-use the_module::AbsolutePath;
-use std::path::Path;
-use std::path::PathBuf;
+
+use the_module::
+{
+  AbsolutePath,
+  Path,
+  PathBuf,
+};
+
+// #[ cfg( feature = "path_utf8" ) ]
+// use the_module::Utf8PathBuf;
 
 #[ test ]
 fn basic()
@@ -15,32 +22,31 @@ fn basic()
 }
 
 #[ test ]
-fn test_to_string_lossy() 
+fn test_to_string_lossy()
 {
   let path : AbsolutePath = "/path/to/file.txt".try_into().unwrap();
   let result = path.to_string_lossy();
   assert_eq!( result, "/path/to/file.txt" );
 }
 #[test]
-fn test_to_string_lossy_hard() 
+fn test_to_string_lossy_hard()
 {
   let abs_path : AbsolutePath = "/path/with/😀/unicode.txt".try_into().unwrap();
   let string_lossy = abs_path.to_string_lossy();
   assert_eq!( string_lossy, "/path/with/\u{1F600}/unicode.txt" );
 }
 
-
 #[test]
-fn test_try_from_pathbuf() 
+fn test_try_from_pathbuf()
 {
-  
+
   let path_buf = PathBuf::from( "/path/to/some/file.txt" );
   let abs_path : AbsolutePath = path_buf.try_into().unwrap();
   assert_eq!( abs_path.to_string_lossy(), "/path/to/some/file.txt" );
 }
 
 #[test]
-fn test_try_from_path() 
+fn test_try_from_path()
 {
   let path = Path::new( "/path/to/some/file.txt" );
   let abs_path : AbsolutePath = path.try_into().unwrap();
@@ -48,7 +54,7 @@ fn test_try_from_path()
 }
 
 #[test]
-fn test_parent() 
+fn test_parent()
 {
   let abs_path : AbsolutePath = "/path/to/some/file.txt".try_into().unwrap();
   let parent_path = abs_path.parent().unwrap();
@@ -56,7 +62,7 @@ fn test_parent()
 }
 
 #[test]
-fn test_join() 
+fn test_join()
 {
   let abs_path : AbsolutePath = "/path/to/some".try_into().unwrap();
   let joined_path = abs_path.join( "file.txt" );
@@ -65,7 +71,7 @@ fn test_join()
 
 
 #[test]
-fn test_relative_path_try_from_str() 
+fn test_relative_path_try_from_str()
 {
   let rel_path_str = "src/main.rs";
   let rel_path = AbsolutePath::try_from( rel_path_str ).unwrap();
@@ -73,7 +79,7 @@ fn test_relative_path_try_from_str()
 }
 
 #[test]
-fn test_relative_path_try_from_pathbuf() 
+fn test_relative_path_try_from_pathbuf()
 {
   let rel_path_buf = PathBuf::from( "src/main.rs" );
   let rel_path = AbsolutePath::try_from( rel_path_buf.clone() ).unwrap();
@@ -81,7 +87,7 @@ fn test_relative_path_try_from_pathbuf()
 }
 
 #[test]
-fn test_relative_path_try_from_path() 
+fn test_relative_path_try_from_path()
 {
   let rel_path = Path::new( "src/main.rs" );
   let rel_path_result = AbsolutePath::try_from( rel_path );
@@ -90,7 +96,7 @@ fn test_relative_path_try_from_path()
 }
 
 #[test]
-fn test_relative_path_parent() 
+fn test_relative_path_parent()
 {
   let rel_path = AbsolutePath::try_from( "src/main.rs" ).unwrap();
   let parent_path = rel_path.parent().unwrap();
@@ -98,9 +104,9 @@ fn test_relative_path_parent()
 }
 
 #[test]
-fn test_relative_path_join() 
+fn test_relative_path_join()
 {
   let rel_path = AbsolutePath::try_from( "src" ).unwrap();
   let joined = rel_path.join( "main.rs" );
   assert_eq!( joined.to_string_lossy(), "src/main.rs" );
-}
\ No newline at end of file
+}
diff --git a/module/core/proper_path_tools/tests/inc/current_path.rs b/module/core/proper_path_tools/tests/inc/current_path.rs
new file mode 100644
index 0000000000..628873a346
--- /dev/null
+++ b/module/core/proper_path_tools/tests/inc/current_path.rs
@@ -0,0 +1,33 @@
+#[ allow( unused_imports ) ]
+use super::*;
+
+use the_module::
+{
+  AbsolutePath,
+  // Path,
+  PathBuf,
+};
+
+#[ cfg( feature = "path_utf8" ) ]
+use the_module::Utf8PathBuf;
+
+#[ test ]
+fn basic()
+{
+
+  let cd = the_module::CurrentPath;
+  let cd_path : PathBuf = cd.try_into().unwrap();
+  println!( "cd_path : {cd_path:?}" );
+
+  let cd = the_module::CurrentPath;
+  let absolute_path : AbsolutePath = cd.try_into().unwrap();
+  println!( "absolute_path : {absolute_path:?}" );
+
+  #[ cfg( feature = "path_utf8" ) ]
+  {
+    let cd = the_module::CurrentPath;
+    let utf8_path : Utf8PathBuf = cd.try_into().unwrap();
+    println!( "utf8_path : {utf8_path:?}" );
+  }
+
+}
diff --git a/module/core/proper_path_tools/tests/inc/mod.rs b/module/core/proper_path_tools/tests/inc/mod.rs
index 31872cad50..58e8721710 100644
--- a/module/core/proper_path_tools/tests/inc/mod.rs
+++ b/module/core/proper_path_tools/tests/inc/mod.rs
@@ -3,6 +3,8 @@
 use super::*;
 
 mod absolute_path;
+mod current_path;
+mod path_canonicalize;
 mod path_change_ext;
 mod path_common;
 mod path_ext;
@@ -12,6 +14,7 @@ mod path_join;
 mod path_normalize;
 mod path_relative;
 mod rebase_path;
+mod transitive;
 mod without_ext;
 
 #[cfg(feature = "path_unique_folder_name")]
diff --git a/module/core/proper_path_tools/tests/inc/path_canonicalize.rs b/module/core/proper_path_tools/tests/inc/path_canonicalize.rs
new file mode 100644
index 0000000000..64cd4665f2
--- /dev/null
+++ b/module/core/proper_path_tools/tests/inc/path_canonicalize.rs
@@ -0,0 +1,50 @@
+#[ allow( unused_imports ) ]
+use super::*;
+use std::path::PathBuf;
+use the_module::path;
+
+#[ test ]
+fn assumptions()
+{
+
+  assert_eq!( PathBuf::from( "c:/src/" ).is_absolute(), true );
+  assert_eq!( PathBuf::from( "/c/src/" ).is_absolute(), false );
+  assert_eq!( PathBuf::from( "/c:/src/" ).is_absolute(), false );
+  assert_eq!( PathBuf::from( "/c/src/" ).is_absolute(), false );
+
+}
+
+#[ test ]
+fn basic()
+{
+
+  let got = path::canonicalize( PathBuf::from( "src" ) );
+  let exp = PathBuf::from( "src" );
+  assert_eq!( got.unwrap(), exp );
+
+  let got = path::canonicalize( PathBuf::from( "\\src" ) );
+  let exp = PathBuf::from( "/src" );
+  assert_eq!( got.unwrap(), exp );
+
+  let got = path::canonicalize( PathBuf::from( "\\src\\" ) );
+  let exp = PathBuf::from( "/src/" );
+  assert_eq!( got.unwrap(), exp );
+
+  let got = path::canonicalize( PathBuf::from( "/src" ) );
+  let exp = PathBuf::from( "/src" );
+  assert_eq!( got.unwrap(), exp );
+
+  let got = path::canonicalize( PathBuf::from( "/src/" ) );
+  let exp = PathBuf::from( "/src/" );
+  assert_eq!( got.unwrap(), exp );
+
+  let got = path::canonicalize( PathBuf::from( "./src/" ) );
+  let exp = PathBuf::from( "./src/" );
+  assert_eq!( got.unwrap(), exp );
+
+  // xxx : qqq : does not work
+  // let got = path::canonicalize( PathBuf::from( "c:/src/" ) );
+  // let exp = PathBuf::from( "/c/src/" );
+  // assert_eq!( got.unwrap(), exp );
+
+}
diff --git a/module/core/proper_path_tools/tests/inc/path_join.rs b/module/core/proper_path_tools/tests/inc/path_join.rs
index 59217c1fe5..fa526ee19d 100644
--- a/module/core/proper_path_tools/tests/inc/path_join.rs
+++ b/module/core/proper_path_tools/tests/inc/path_join.rs
@@ -1,252 +1,450 @@
 use super::*;
-
+use std::path::PathBuf;
 
 #[ test ]
 fn join_empty()
 {
-  let ( expected, paths ) = ( "", vec![ "" ] );
-  let result = the_module::path::join_paths( paths.clone().into_iter() );
-  assert_eq!( result, std::path::PathBuf::from( expected ), "Test failed. Paths: '{:?}', Expected: '{}', Got: '{}'", paths, expected, result.to_string_lossy() );
+  let ( expected, paths ) : ( PathBuf, Vec< PathBuf > ) = ( "".into(), vec![ "".into() ] );
+  let result = the_module::path::join_paths( paths.iter().map( |p| p.as_path() ) );
+  assert_eq!
+  (
+    result,
+    expected,
+    "Test failed. Paths: '{:?}', Expected: '{}', Got: '{}'",
+    paths,
+    expected.display(),
+    result.to_string_lossy(),
+  );
 }
 
 #[ test ]
 fn join_several_empties()
 {
-  let ( expected, paths ) = ( "", vec![ "", "" ] );
-  let result = the_module::path::join_paths( paths.clone().into_iter() );
-  assert_eq!( result, std::path::PathBuf::from( expected ), "Test failed. Paths: '{:?}', Expected: '{}', Got: '{}'", paths, expected, result.to_string_lossy() );
+  let ( expected, paths ) : ( PathBuf, Vec< PathBuf > ) = ( "".into(), vec![ "".into(), "".into() ] );
+  let result = the_module::path::join_paths( paths.iter().map( |p| p.as_path() ) );
+  assert_eq!
+  (
+    result,
+    expected,
+    "Test failed. Paths: '{:?}', Expected: '{}', Got: '{}'",
+    paths,
+    expected.display(),
+    result.to_string_lossy(),
+  );
 }
 
-
 #[ test ]
 fn root_with_absolute()
 {
-  let ( expected, paths ) = ( "/a/b", vec![ "/", "/a/b" ] );
-  let result = the_module::path::join_paths( paths.clone().into_iter() );
-  assert_eq!( result, std::path::PathBuf::from( expected ), "Test failed. Paths: '{:?}', Expected: '{}', Got: '{}'", paths, expected, result.to_string_lossy() );
+  let ( expected, paths ) : ( PathBuf, Vec< PathBuf > ) = ( "/a/b".into(), vec![ "/".into(), "/a/b".into() ] );
+  let result = the_module::path::join_paths( paths.iter().map( |p| p.as_path() ) );
+  assert_eq!
+  (
+    result,
+    expected,
+    "Test failed. Paths: '{:?}', Expected: '{}', Got: '{}'",
+    paths,
+    expected.display(),
+    result.to_string_lossy(),
+  );
 }
 
-
 #[ test ]
 fn root_with_relative()
 {
-  let ( expected, paths ) = ( "/a/b", vec![ "/", "a/b" ] );
-  let result = the_module::path::join_paths( paths.clone().into_iter() );
-  assert_eq!( result, std::path::PathBuf::from( expected ), "Test failed. Paths: '{:?}', Expected: '{}', Got: '{}'", paths, expected, result.to_string_lossy() );
+  let ( expected, paths ) : ( PathBuf, Vec< PathBuf > ) = ( "/a/b".into(), vec![ "/".into(), "a/b".into() ] );
+  let result = the_module::path::join_paths( paths.iter().map( |p| p.as_path() ) );
+  assert_eq!
+  (
+    result,
+    expected,
+    "Test failed. Paths: '{:?}', Expected: '{}', Got: '{}'",
+    paths,
+    expected.display(),
+    result.to_string_lossy(),
+  );
 }
 
-
 #[ test ]
 fn dir_with_absolute()
 {
-  let ( expected, paths ) = ( "/a/b", vec![ "/dir", "/a/b" ] );
-  let result = the_module::path::join_paths( paths.clone().into_iter() );
-  assert_eq!( result, std::path::PathBuf::from( expected ), "Test failed. Paths: '{:?}', Expected: '{}', Got: '{}'", paths, expected, result.to_string_lossy() );
+  let ( expected, paths ) : ( PathBuf, Vec< PathBuf > ) = ( "/a/b".into(), vec![ "/dir".into(), "/a/b".into() ] );
+  let result = the_module::path::join_paths( paths.iter().map( |p| p.as_path() ) );
+  assert_eq!
+  (
+    result,
+    expected,
+    "Test failed. Paths: '{:?}', Expected: '{}', Got: '{}'",
+    paths,
+    expected.display(),
+    result.to_string_lossy(),
+  );
 }
 
-
-
 #[ test ]
 fn dir_with_relative()
 {
-  let ( expected, paths ) = ( "/dir/a/b", vec![ "/dir", "a/b" ] );
-  let result = the_module::path::join_paths( paths.clone().into_iter() );
-  assert_eq!( result, std::path::PathBuf::from( expected ), "Test failed. Paths: '{:?}', Expected: '{}', Got: '{}'", paths, expected, result.to_string_lossy() );
+  let ( expected, paths ) : ( PathBuf, Vec< PathBuf > ) = ( "/dir/a/b".into(), vec![ "/dir".into(), "a/b".into() ] );
+  let result = the_module::path::join_paths( paths.iter().map( |p| p.as_path() ) );
+  assert_eq!
+  (
+    result,
+    expected,
+    "Test failed. Paths: '{:?}', Expected: '{}', Got: '{}'",
+    paths,
+    expected.display(),
+    result.to_string_lossy(),
+  );
 }
 
-
 #[ test ]
 fn trailed_dir_with_absolute()
 {
-  let ( expected, paths ) =  ( "/a/b", vec![ "/dir/", "/a/b" ] );
-  let result = the_module::path::join_paths( paths.clone().into_iter() );
-  assert_eq!( result, std::path::PathBuf::from( expected ), "Test failed. Paths: '{:?}', Expected: '{}', Got: '{}'", paths, expected, result.to_string_lossy() );
+  let ( expected, paths ) : ( PathBuf, Vec< PathBuf > ) = ( "/a/b".into(), vec![ "/dir/".into(), "/a/b".into() ] );
+  let result = the_module::path::join_paths( paths.iter().map( |p| p.as_path() ) );
+  assert_eq!
+  (
+    result,
+    expected,
+    "Test failed. Paths: '{:?}', Expected: '{}', Got: '{}'",
+    paths,
+    expected.display(),
+    result.to_string_lossy(),
+  );
 }
 
 #[ test ]
 fn trailed_dir_with_relative()
 {
-  let ( expected, paths ) = ( "/dir/a/b", vec![ "/dir/", "a/b" ] );
-  let result = the_module::path::join_paths( paths.clone().into_iter() );
-  assert_eq!( result, std::path::PathBuf::from( expected ), "Test failed. Paths: '{:?}', Expected: '{}', Got: '{}'", paths, expected, result.to_string_lossy() );
+  let ( expected, paths ) : ( PathBuf, Vec< PathBuf > ) = ( "/dir/a/b".into(), vec![ "/dir/".into(), "a/b".into() ] );
+  let result = the_module::path::join_paths( paths.iter().map( |p| p.as_path() ) );
+  assert_eq!
+  (
+    result,
+    expected,
+    "Test failed. Paths: '{:?}', Expected: '{}', Got: '{}'",
+    paths,
+    expected.display(),
+    result.to_string_lossy(),
+  );
 }
 
-
 #[ test ]
 fn dir_with_down()
 {
-  let ( expected, paths ) = ( "/a/b", vec![ "/dir", "../a/b" ] );
-  let result = the_module::path::join_paths( paths.clone().into_iter() );
-  assert_eq!( result, std::path::PathBuf::from( expected ), "Test failed. Paths: '{:?}', Expected: '{}', Got: '{}'", paths, expected, result.to_string_lossy() );
+  let ( expected, paths ) : ( PathBuf, Vec< PathBuf > ) = ( "/a/b".into(), vec![ "/dir".into(), "../a/b".into() ] );
+  let result = the_module::path::join_paths( paths.iter().map( |p| p.as_path() ) );
+  assert_eq!
+  (
+    result,
+    expected,
+    "Test failed. Paths: '{:?}', Expected: '{}', Got: '{}'",
+    paths,
+    expected.display(),
+    result.to_string_lossy(),
+  );
 }
 
-
 #[ test ]
 fn trailed_dir_with_down()
 {
-  let ( expected, paths ) = ( "/dir/a/b", vec![ "/dir/", "../a/b" ] );
-  let result = the_module::path::join_paths( paths.clone().into_iter() );
-  assert_eq!( result, std::path::PathBuf::from( expected ), "Test failed. Paths: '{:?}', Expected: '{}', Got: '{}'", paths, expected, result.to_string_lossy() );
+  let ( expected, paths ) : ( PathBuf, Vec< PathBuf > ) = ( "/dir/a/b".into(), vec![ "/dir/".into(), "../a/b".into() ] );
+  let result = the_module::path::join_paths( paths.iter().map( |p| p.as_path() ) );
+  assert_eq!
+  (
+    result,
+    expected,
+    "Test failed. Paths: '{:?}', Expected: '{}', Got: '{}'",
+    paths,
+    expected.display(),
+    result.to_string_lossy(),
+  );
 }
 
-
-
 #[ test ]
 fn dir_with_several_down()
 {
-  let ( expected, paths ) = ( "/a/b", vec![ "/dir/dir2", "../../a/b" ] );
-  let result = the_module::path::join_paths( paths.clone().into_iter() );
-  assert_eq!( result, std::path::PathBuf::from( expected ), "Test failed. Paths: '{:?}', Expected: '{}', Got: '{}'", paths, expected, result.to_string_lossy() );
+  let ( expected, paths ) : ( PathBuf, Vec< PathBuf > ) = ( "/a/b".into(), vec![ "/dir/dir2".into(), "../../a/b".into() ] );
+  let result = the_module::path::join_paths( paths.iter().map( |p| p.as_path() ) );
+  assert_eq!
+  (
+    result,
+    expected,
+    "Test failed. Paths: '{:?}', Expected: '{}', Got: '{}'",
+    paths,
+    expected.display(),
+    result.to_string_lossy(),
+  );
 }
 
-
 #[ test ]
 fn trailed_dir_with_several_down()
 {
-  let ( expected, paths ) = ( "/a/b", vec![ "/dir/", "../../a/b" ] );
-  let result = the_module::path::join_paths( paths.clone().into_iter() );
-  assert_eq!( result, std::path::PathBuf::from( expected ), "Test failed. Paths: '{:?}', Expected: '{}', Got: '{}'", paths, expected, result.to_string_lossy() );
+  let ( expected, paths ) : ( PathBuf, Vec< PathBuf > ) = ( "/a/b".into(), vec![ "/dir/".into(), "../../a/b".into() ] );
+  let result = the_module::path::join_paths( paths.iter().map( |p| p.as_path() ) );
+  assert_eq!
+  (
+    result,
+    expected,
+    "Test failed. Paths: '{:?}', Expected: '{}', Got: '{}'",
+    paths,
+    expected.display(),
+    result.to_string_lossy(),
+  );
 }
 
-
 #[ test ]
 fn dir_with_several_down_go_out_of_root()
 {
-  let ( expected, paths ) = ( "/../a/b", vec![ "/dir", "../../a/b" ] );
-  let result = the_module::path::join_paths( paths.clone().into_iter() );
-  assert_eq!( result, std::path::PathBuf::from( expected ), "Test failed. Paths: '{:?}', Expected: '{}', Got: '{}'", paths, expected, result.to_string_lossy() );
+  let ( expected, paths ) : ( PathBuf, Vec< PathBuf > ) = ( "/../a/b".into(), vec![ "/dir".into(), "../../a/b".into() ] );
+  let result = the_module::path::join_paths( paths.iter().map( |p| p.as_path() ) );
+  assert_eq!
+  (
+    result,
+    expected,
+    "Test failed. Paths: '{:?}', Expected: '{}', Got: '{}'",
+    paths,
+    expected.display(),
+    result.to_string_lossy(),
+  );
 }
 
 #[ test ]
 fn trailed_absolute_with_trailed_down()
 {
-  let ( expected, paths ) = ( "/a/b/", vec![ "/a/b/", "../" ] );
-  let result = the_module::path::join_paths( paths.clone().into_iter() );
-  assert_eq!( result, std::path::PathBuf::from( expected ), "Test failed. Paths: '{:?}', Expected: '{}', Got: '{}'", paths, expected, result.to_string_lossy() );
+  let ( expected, paths ) : ( PathBuf, Vec< PathBuf > ) = ( "/a/b/".into(), vec![ "/a/b/".into(), "../".into() ] );
+  let result = the_module::path::join_paths( paths.iter().map( |p| p.as_path() ) );
+  assert_eq!
+  (
+    result,
+    expected,
+    "Test failed. Paths: '{:?}', Expected: '{}', Got: '{}'",
+    paths,
+    expected.display(),
+    result.to_string_lossy(),
+  );
 }
 
-
 #[ test ]
 fn absolute_with_trailed_down()
 {
-  let ( expected, paths ) = ( "/a/", vec![ "/a/b", "../" ]) ;
-  let result = the_module::path::join_paths( paths.clone().into_iter() );
-  assert_eq!( result, std::path::PathBuf::from( expected ), "Test failed. Paths: '{:?}', Expected: '{}', Got: '{}'", paths, expected, result.to_string_lossy() );
+  let ( expected, paths ) : ( PathBuf, Vec< PathBuf > ) = ( "/a/".into(), vec![ "/a/b".into(), "../".into() ] );
+  let result = the_module::path::join_paths( paths.iter().map( |p| p.as_path() ) );
+  assert_eq!
+  (
+    result,
+    expected,
+    "Test failed. Paths: '{:?}', Expected: '{}', Got: '{}'",
+    paths,
+    expected.display(),
+    result.to_string_lossy(),
+  );
 }
 
-
 #[ test ]
 fn trailed_absolute_with_down()
 {
-  let ( expected, paths ) = ( "/a/b", vec![ "/a/b/", ".." ] );
-  let result = the_module::path::join_paths( paths.clone().into_iter() );
-  assert_eq!( result, std::path::PathBuf::from( expected ), "Test failed. Paths: '{:?}', Expected: '{}', Got: '{}'", paths, expected, result.to_string_lossy() );
+  let ( expected, paths ) : ( PathBuf, Vec< PathBuf > ) = ( "/a/b".into(), vec![ "/a/b/".into(), "..".into() ] );
+  let result = the_module::path::join_paths( paths.iter().map( |p| p.as_path() ) );
+  assert_eq!
+  (
+    result,
+    expected,
+    "Test failed. Paths: '{:?}', Expected: '{}', Got: '{}'",
+    paths,
+    expected.display(),
+    result.to_string_lossy(),
+  );
 }
 
-
 #[ test ]
 fn trailed_absolute_with_trailed_here()
 {
-  let ( expected, paths ) = ( "/a/b/", vec![ "/a/b/", "./" ] );
-  let result = the_module::path::join_paths( paths.clone().into_iter() );
-  assert_eq!( result, std::path::PathBuf::from( expected ), "Test failed. Paths: '{:?}', Expected: '{}', Got: '{}'", paths, expected, result.to_string_lossy() );
+  let ( expected, paths ) : ( PathBuf, Vec< PathBuf > ) = ( "/a/b/".into(), vec![ "/a/b/".into(), "./".into() ] );
+  let result = the_module::path::join_paths( paths.iter().map( |p| p.as_path() ) );
+  assert_eq!
+  (
+    result,
+    expected,
+    "Test failed. Paths: '{:?}', Expected: '{}', Got: '{}'",
+    paths,
+    expected.display(),
+    result.to_string_lossy(),
+  );
 }
 
-
-
 #[ test ]
 fn absolute_with_trailed_here()
 {
-  let ( expected, paths ) = ( "/a/b/", vec![ "/a/b", "./" ] );
-  let result = the_module::path::join_paths( paths.clone().into_iter() );
-  assert_eq!( result, std::path::PathBuf::from( expected ), "Test failed. Paths: '{:?}', Expected: '{}', Got: '{}'", paths, expected, result.to_string_lossy() );
+  let ( expected, paths ) : ( PathBuf, Vec< PathBuf > ) = ( "/a/b/".into(), vec![ "/a/b".into(), "./".into() ] );
+  let result = the_module::path::join_paths( paths.iter().map( |p| p.as_path() ) );
+  assert_eq!
+  (
+    result,
+    expected,
+    "Test failed. Paths: '{:?}', Expected: '{}', Got: '{}'",
+    paths,
+    expected.display(),
+    result.to_string_lossy(),
+  );
 }
 
-
 #[ test ]
 fn trailed_absolute_with_here()
 {
-  let ( expected, paths ) = ( "/a/b", vec![ "/a/b/", "." ] );
-  let result = the_module::path::join_paths( paths.clone().into_iter() );
-  assert_eq!( result, std::path::PathBuf::from( expected ), "Test failed. Paths: '{:?}', Expected: '{}', Got: '{}'", paths, expected, result.to_string_lossy() );
+  let ( expected, paths ) : ( PathBuf, Vec< PathBuf > ) = ( "/a/b".into(), vec![ "/a/b/".into(), ".".into() ] );
+  let result = the_module::path::join_paths( paths.iter().map( |p| p.as_path() ) );
+  assert_eq!
+  (
+    result,
+    expected,
+    "Test failed. Paths: '{:?}', Expected: '{}', Got: '{}'",
+    paths,
+    expected.display(),
+    result.to_string_lossy(),
+  );
 }
 
-
 #[ test ]
 fn join_with_empty()
 {
-  let ( expected, paths ) = ( "/a/b/c", vec![ "", "a/b", "", "c", "" ] );
-  let result = the_module::path::join_paths( paths.clone().into_iter() );
-  assert_eq!( result, std::path::PathBuf::from( expected ), "Test failed. Paths: '{:?}', Expected: '{}', Got: '{}'", paths, expected, result.to_string_lossy() );
+  let ( expected, paths ) : ( PathBuf, Vec< PathBuf > ) = ( "/a/b/c".into(), vec![ "".into(), "a/b".into(), "".into(), "c".into(), "".into() ] );
+  let result = the_module::path::join_paths( paths.iter().map( |p| p.as_path() ) );
+  assert_eq!
+  (
+    result,
+    expected,
+    "Test failed. Paths: '{:?}', Expected: '{}', Got: '{}'",
+    paths,
+    expected.display(),
+    result.to_string_lossy(),
+  );
 }
 
 #[ test ]
 fn join_windows_os_paths()
 {
-  let ( expected, paths ) = ( "/c/foo/bar/", vec![ "c :\\", "foo\\", "bar\\" ] );
-  let result = the_module::path::join_paths( paths.clone().into_iter() );
-  assert_eq!( result, std::path::PathBuf::from( expected ), "Test failed. Paths: '{:?}', Expected: '{}', Got: '{}'", paths, expected, result.to_string_lossy() );
+  let ( expected, paths ) : ( PathBuf, Vec< PathBuf > ) = ( "/c/foo/bar/".into(), vec![ "c:\\".into(), "foo\\".into(), "bar\\".into() ] );
+  let result = the_module::path::join_paths( paths.iter().map( |p| p.as_path() ) );
+  assert_eq!
+  (
+    result,
+    expected,
+    "Test failed. Paths: '{:?}', Expected: '{}', Got: '{}'",
+    paths,
+    expected.display(),
+    result.to_string_lossy(),
+  );
 }
 
-
 #[ test ]
 fn join_unix_os_paths()
 {
-  let ( expected, paths ) = ( "/baz/foo", vec![ "/bar/", "/baz", "foo/", "." ] );
-  let result = the_module::path::join_paths( paths.clone().into_iter() );
-  assert_eq!( result, std::path::PathBuf::from( expected ), "Test failed. Paths: '{:?}', Expected: '{}', Got: '{}'", paths, expected, result.to_string_lossy() );
+  let ( expected, paths ) : ( PathBuf, Vec< PathBuf > ) = ( "/baz/foo".into(), vec![ "/bar/".into(), "/baz".into(), "foo/".into(), ".".into() ] );
+  let result = the_module::path::join_paths( paths.iter().map( |p| p.as_path() ) );
+  assert_eq!
+  (
+    result,
+    expected,
+    "Test failed. Paths: '{:?}', Expected: '{}', Got: '{}'",
+    paths,
+    expected.display(),
+    result.to_string_lossy(),
+  );
 }
 
-
 #[ test ]
 fn join_unix_os_paths_2()
 {
-  let ( expected, paths ) = ( "/baz/foo/z", vec![ "/bar/", "/baz", "foo/", ".", "z" ] );
-  let result = the_module::path::join_paths( paths.clone().into_iter() );
-  assert_eq!( result, std::path::PathBuf::from( expected ), "Test failed. Paths: '{:?}', Expected: '{}', Got: '{}'", paths, expected, result.to_string_lossy() );
+  let ( expected, paths ) : ( PathBuf, Vec< PathBuf > ) = ( "/baz/foo/z".into(), vec![ "/bar/".into(), "/baz".into(), "foo/".into(), ".".into(), "z".into() ] );
+  let result = the_module::path::join_paths( paths.iter().map( |p| p.as_path() ) );
+  assert_eq!
+  (
+    result,
+    expected,
+    "Test failed. Paths: '{:?}', Expected: '{}', Got: '{}'",
+    paths,
+    expected.display(),
+    result.to_string_lossy(),
+  );
 }
 
-
 #[ test ]
 fn more_complicated_cases_1()
 {
-  let ( expected, paths ) = ( "/aa/bb//cc", vec![ "/aa", "bb//", "cc" ] );
-  let result = the_module::path::join_paths( paths.clone().into_iter() );
-  assert_eq!( result, std::path::PathBuf::from( expected ), "Test failed. Paths: '{:?}', Expected: '{}', Got: '{}'", paths, expected, result.to_string_lossy() );
+  let ( expected, paths ) : ( PathBuf, Vec< PathBuf > ) = ( "/aa/bb//cc".into(), vec![ "/aa".into(), "bb//".into(), "cc".into() ] );
+  let result = the_module::path::join_paths( paths.iter().map( |p| p.as_path() ) );
+  assert_eq!
+  (
+    result,
+    expected,
+    "Test failed. Paths: '{:?}', Expected: '{}', Got: '{}'",
+    paths,
+    expected.display(),
+    result.to_string_lossy(),
+  );
 }
 
-
-
 #[ test ]
 fn more_complicated_cases_2()
 {
-  let ( expected, paths ) = ( "/bb/cc", vec![ "/aa", "/bb", "cc" ] );
-  let result = the_module::path::join_paths( paths.clone().into_iter() );
-  assert_eq!( result, std::path::PathBuf::from( expected ), "Test failed. Paths: '{:?}', Expected: '{}', Got: '{}'", paths, expected, result.to_string_lossy() );
+  let ( expected, paths ) : ( PathBuf, Vec< PathBuf > ) = ( "/bb/cc".into(), vec![ "/aa".into(), "/bb".into(), "cc".into() ] );
+  let result = the_module::path::join_paths( paths.iter().map( |p| p.as_path() ) );
+  assert_eq!
+  (
+    result,
+    expected,
+    "Test failed. Paths: '{:?}', Expected: '{}', Got: '{}'",
+    paths,
+    expected.display(),
+    result.to_string_lossy(),
+  );
 }
 
-
 #[ test ]
 fn more_complicated_cases_3()
 {
-  let ( expected, paths ) = ( "//aa/bb//cc//", vec![ "//aa", "bb//", "cc//" ] );
-  let result = the_module::path::join_paths( paths.clone().into_iter() );
-  assert_eq!( result, std::path::PathBuf::from( expected ), "Test failed. Paths: '{:?}', Expected: '{}', Got: '{}'", paths, expected, result.to_string_lossy() );
+  let ( expected, paths ) : ( PathBuf, Vec< PathBuf > ) = ( "//aa/bb//cc//".into(), vec![ "//aa".into(), "bb//".into(), "cc//".into() ] );
+  let result = the_module::path::join_paths( paths.iter().map( |p| p.as_path() ) );
+  assert_eq!
+  (
+    result,
+    expected,
+    "Test failed. Paths: '{:?}', Expected: '{}', Got: '{}'",
+    paths,
+    expected.display(),
+    result.to_string_lossy(),
+  );
 }
 
-
 #[ test ]
 fn more_complicated_cases_4()
 {
-  let ( expected, paths ) = ( "/aa/bb//cc", vec![ "/aa", "bb//", "cc", "." ] );
-  let result = the_module::path::join_paths( paths.clone().into_iter() );
-  assert_eq!( result, std::path::PathBuf::from( expected ), "Test failed. Paths: '{:?}', Expected: '{}', Got: '{}'", paths, expected, result.to_string_lossy() );
+  let ( expected, paths ) : ( PathBuf, Vec< PathBuf > ) = ( "/aa/bb//cc".into(), vec![ "/aa".into(), "bb//".into(), "cc".into(), ".".into() ] );
+  let result = the_module::path::join_paths( paths.iter().map( |p| p.as_path() ) );
+  assert_eq!
+  (
+    result,
+    expected,
+    "Test failed. Paths: '{:?}', Expected: '{}', Got: '{}'",
+    paths,
+    expected.display(),
+    result.to_string_lossy(),
+  );
 }
 
 #[ test ]
 fn more_complicated_cases_5()
 {
-  let ( expected, paths ) = ( "//b//d/..e", vec![ "/", "a", "//b//", "././c", "../d", "..e" ] );
-  let result = the_module::path::join_paths( paths.clone().into_iter() );
-  assert_eq!( result, std::path::PathBuf::from( expected ), "Test failed. Paths: '{:?}', Expected: '{}', Got: '{}'", paths, expected, result.to_string_lossy() );
+  let ( expected, paths ) : ( PathBuf, Vec< PathBuf > ) = ( "//b//d/..e".into(), vec![ "/".into(), "a".into(), "//b//".into(), "././c".into(), "../d".into(), "..e".into() ] );
+  let result = the_module::path::join_paths( paths.iter().map( |p| p.as_path() ) );
+  assert_eq!
+  (
+    result,
+    expected,
+    "Test failed. Paths: '{:?}', Expected: '{}', Got: '{}'",
+    paths,
+    expected.display(),
+    result.to_string_lossy(),
+  );
 }
\ No newline at end of file
diff --git a/module/core/proper_path_tools/tests/inc/path_relative.rs b/module/core/proper_path_tools/tests/inc/path_relative.rs
index f94fcc5ed6..7d5f0536c7 100644
--- a/module/core/proper_path_tools/tests/inc/path_relative.rs
+++ b/module/core/proper_path_tools/tests/inc/path_relative.rs
@@ -155,7 +155,7 @@ fn test_absolute_relative_root_to_root()
 fn test_windows_disks()
 {
   let from = "d:/";
-  let to = "c :/x/y";
+  let to = "c:/x/y";
   let expected = "../c/x/y";
   assert_eq!( the_module::path::path_relative( from, to ), PathBuf::from( expected ) );
 }
diff --git a/module/core/proper_path_tools/tests/inc/transitive.rs b/module/core/proper_path_tools/tests/inc/transitive.rs
new file mode 100644
index 0000000000..e0b2da7acc
--- /dev/null
+++ b/module/core/proper_path_tools/tests/inc/transitive.rs
@@ -0,0 +1,86 @@
+#[ allow( unused_imports ) ]
+use super::*;
+
+#[ test ]
+fn basic_from()
+{
+  use proper_path_tools::TransitiveTryFrom;
+  use std::convert::TryFrom;
+
+  struct InitialType;
+  struct IntermediateType;
+  struct FinalType;
+  struct ConversionError;
+
+  impl TryFrom< InitialType > for IntermediateType
+  {
+    type Error = ConversionError;
+    fn try_from( _value : InitialType ) -> Result< Self, Self::Error >
+    {
+      // Conversion logic here
+      Ok( IntermediateType )
+    }
+  }
+
+  impl TryFrom< IntermediateType > for FinalType
+  {
+    type Error = ConversionError;
+    fn try_from( _value : IntermediateType ) -> Result< Self, Self::Error >
+    {
+      // Conversion logic here
+      Ok( FinalType )
+    }
+  }
+
+  // impl TransitiveTryFrom< IntermediateType, ConversionError, InitialType > for FinalType {}
+
+  let initial = InitialType;
+  let _final_result : Result< FinalType, ConversionError > = FinalType::transitive_try_from::< IntermediateType >( initial );
+
+}
+
+#[ test ]
+fn test_transitive_try_into()
+{
+  use proper_path_tools::TransitiveTryInto;
+
+  // Define NewType1 wrapping a String
+  #[ derive( Debug, PartialEq ) ]
+  struct NewType1( String );
+
+  // Define NewType2 wrapping NewType1
+  #[ derive( Debug, PartialEq ) ]
+  struct NewType2( NewType1 );
+
+  // Define an error type for conversion
+  #[ derive( Debug, PartialEq ) ]
+  struct ConversionError;
+
+  // Implement TryInto for converting String to NewType1
+  impl TryInto< NewType1 > for String
+  {
+    type Error = ConversionError;
+    fn try_into( self ) -> Result< NewType1, Self::Error >
+    {
+      Ok( NewType1( self ) )
+    }
+  }
+
+  // Implement TryInto for converting NewType1 to NewType2
+  impl TryInto< NewType2 > for NewType1
+  {
+    type Error = ConversionError;
+    fn try_into( self ) -> Result< NewType2, Self::Error >
+    {
+      Ok( NewType2( self ) )
+    }
+  }
+
+  let initial = String::from( "Hello, world!" );
+  let final_result : Result< NewType2, ConversionError > = initial.transitive_try_into::< NewType1 >();
+  assert_eq!( final_result, Ok( NewType2( NewType1( String::from( "Hello, world!" ) ) ) ) );
+
+  let initial = String::from( "Hello, world!" );
+  let _final_result : NewType2 = initial.transitive_try_into::< NewType1 >().unwrap();
+
+}
diff --git a/module/core/reflect_tools/Cargo.toml b/module/core/reflect_tools/Cargo.toml
index 42a0b8e4e7..8fb902cee9 100644
--- a/module/core/reflect_tools/Cargo.toml
+++ b/module/core/reflect_tools/Cargo.toml
@@ -22,7 +22,7 @@ workspace = true
 [package.metadata.docs.rs]
 features = [ "full" ]
 all-features = false
-# exclude = [ "/tests", "/examples", "-*" ]
+
 
 [features]
 
diff --git a/module/core/reflect_tools/src/lib.rs b/module/core/reflect_tools/src/lib.rs
index 50f0a2231f..de402a175f 100644
--- a/module/core/reflect_tools/src/lib.rs
+++ b/module/core/reflect_tools/src/lib.rs
@@ -46,8 +46,10 @@ pub mod orphan
 
 /// Exposed namespace of the module.
 #[ cfg( feature = "enabled" ) ]
+#[ allow( unused_imports ) ]
 pub mod exposed
 {
+  use super::*;
   #[ doc( inline ) ]
   #[ allow( unused_imports ) ]
   pub use super::prelude::*;
diff --git a/module/core/reflect_tools/src/reflect.rs b/module/core/reflect_tools/src/reflect.rs
index 9d3c8a288e..6fe9078c51 100644
--- a/module/core/reflect_tools/src/reflect.rs
+++ b/module/core/reflect_tools/src/reflect.rs
@@ -130,8 +130,10 @@ pub mod orphan
 }
 
 /// Exposed namespace of the module.
+#[ allow( unused_imports ) ]
 pub mod exposed
 {
+  use super::*;
   #[ doc( inline ) ]
   #[ allow( unused_imports ) ]
   pub use super::prelude::*;
diff --git a/module/core/reflect_tools/src/reflect/axiomatic.rs b/module/core/reflect_tools/src/reflect/axiomatic.rs
index 24c9a8ed68..91ac436e4f 100644
--- a/module/core/reflect_tools/src/reflect/axiomatic.rs
+++ b/module/core/reflect_tools/src/reflect/axiomatic.rs
@@ -527,8 +527,10 @@ pub mod orphan
 }
 
 /// Exposed namespace of the module.
+#[ allow( unused_imports ) ]
 pub mod exposed
 {
+  use super::*;
   #[ doc( inline ) ]
   #[ allow( unused_imports ) ]
   pub use super::prelude::*;
diff --git a/module/core/reflect_tools/src/reflect/entity_array.rs b/module/core/reflect_tools/src/reflect/entity_array.rs
index 5c171783e4..1e2b86439b 100644
--- a/module/core/reflect_tools/src/reflect/entity_array.rs
+++ b/module/core/reflect_tools/src/reflect/entity_array.rs
@@ -97,8 +97,10 @@ pub mod orphan
 }
 
 /// Exposed namespace of the module.
+#[ allow( unused_imports ) ]
 pub mod exposed
 {
+  use super::*;
   #[ doc( inline ) ]
   #[ allow( unused_imports ) ]
   pub use super::prelude::*;
diff --git a/module/core/reflect_tools/src/reflect/entity_hashmap.rs b/module/core/reflect_tools/src/reflect/entity_hashmap.rs
index 696f644db5..23297d4c12 100644
--- a/module/core/reflect_tools/src/reflect/entity_hashmap.rs
+++ b/module/core/reflect_tools/src/reflect/entity_hashmap.rs
@@ -32,7 +32,7 @@ pub mod private
       KeyedCollectionDescriptor::< Self >::new( 0, Vec::new() )
     }
   }
-  
+
   impl< K, V > Entity for KeyedCollectionDescriptor< HashMap< K, V > >
   where
     K : 'static + Instance + IsScalar + Clone,
@@ -69,7 +69,7 @@ pub mod private
       let mut result : Vec< KeyVal > = ( 0 .. self.len() )
       .map( | k | KeyVal { key : Primitive::usize( k ), val : Box::new( < V as Instance >::Reflect() ) } )
       .collect();
-      
+
       for i in 0..self.len()
       {
           result[ i ] = KeyVal { key : self.keys[ i ].clone(), val : Box::new( < V as Instance >::Reflect() ) }
@@ -104,8 +104,10 @@ pub mod orphan
 }
 
 /// Exposed namespace of the module.
+#[ allow( unused_imports ) ]
 pub mod exposed
 {
+  use super::*;
   #[ doc( inline ) ]
   #[ allow( unused_imports ) ]
   pub use super::prelude::*;
diff --git a/module/core/reflect_tools/src/reflect/entity_hashset.rs b/module/core/reflect_tools/src/reflect/entity_hashset.rs
index d51fda1030..c04bcd9e36 100644
--- a/module/core/reflect_tools/src/reflect/entity_hashset.rs
+++ b/module/core/reflect_tools/src/reflect/entity_hashset.rs
@@ -27,7 +27,7 @@ pub mod private
       CollectionDescriptor::< Self >::new( 0 )
     }
   }
-  
+
   impl< T > Entity for CollectionDescriptor< HashSet< T > >
   where
     T : 'static + Instance,
@@ -93,8 +93,10 @@ pub mod orphan
 }
 
 /// Exposed namespace of the module.
+#[ allow( unused_imports ) ]
 pub mod exposed
 {
+  use super::*;
   #[ doc( inline ) ]
   #[ allow( unused_imports ) ]
   pub use super::prelude::*;
diff --git a/module/core/reflect_tools/src/reflect/entity_slice.rs b/module/core/reflect_tools/src/reflect/entity_slice.rs
index 90416afcbc..5cab0850bb 100644
--- a/module/core/reflect_tools/src/reflect/entity_slice.rs
+++ b/module/core/reflect_tools/src/reflect/entity_slice.rs
@@ -37,33 +37,33 @@ pub mod private
     {
       true
     }
-  
+
     #[ inline( always ) ]
     fn len( &self ) -> usize
     {
       self.len
     }
-  
+
     #[ inline( always ) ]
     fn type_name( &self ) -> &'static str
     {
       core::any::type_name::< &'static [ T ] >()
     }
-  
+
     #[ inline( always ) ]
     fn type_id( &self ) -> core::any::TypeId
     {
       core::any::TypeId::of::< &'static [ T ] >()
     }
-  
+
     #[ inline( always ) ]
     fn elements( &self ) -> Box< dyn Iterator< Item = KeyVal > >
     {
-  
+
       let result : Vec< KeyVal > = ( 0 .. self.len() )
       .map( | k | KeyVal { key : Primitive::usize( k ), val : Box::new( < T as Instance >::Reflect() ) } )
       .collect();
-  
+
       Box::new( result.into_iter() )
     }
   }
@@ -93,8 +93,10 @@ pub mod orphan
 }
 
 /// Exposed namespace of the module.
+#[ allow( unused_imports ) ]
 pub mod exposed
 {
+  use super::*;
   #[ doc( inline ) ]
   #[ allow( unused_imports ) ]
   pub use super::prelude::*;
diff --git a/module/core/reflect_tools/src/reflect/entity_vec.rs b/module/core/reflect_tools/src/reflect/entity_vec.rs
index 997e32b18c..5d565abc72 100644
--- a/module/core/reflect_tools/src/reflect/entity_vec.rs
+++ b/module/core/reflect_tools/src/reflect/entity_vec.rs
@@ -26,7 +26,7 @@ pub mod private
       CollectionDescriptor::< Self >::new( 0 )
     }
   }
-  
+
   impl< T > Entity for CollectionDescriptor< Vec< T > >
   where
     T : 'static + Instance,
@@ -92,8 +92,10 @@ pub mod orphan
 }
 
 /// Exposed namespace of the module.
+#[ allow( unused_imports ) ]
 pub mod exposed
 {
+  use super::*;
   #[ doc( inline ) ]
   #[ allow( unused_imports ) ]
   pub use super::prelude::*;
diff --git a/module/core/reflect_tools/src/reflect/fields.rs b/module/core/reflect_tools/src/reflect/fields.rs
index 2956c8180f..a867713780 100644
--- a/module/core/reflect_tools/src/reflect/fields.rs
+++ b/module/core/reflect_tools/src/reflect/fields.rs
@@ -114,8 +114,10 @@ pub mod orphan
 }
 
 /// Exposed namespace of the module.
+#[ allow( unused_imports ) ]
 pub mod exposed
 {
+  use super::*;
   #[ doc( inline ) ]
   #[ allow( unused_imports ) ]
   pub use super::private::
diff --git a/module/core/reflect_tools/src/reflect/primitive.rs b/module/core/reflect_tools/src/reflect/primitive.rs
index f696eccf75..51abd2ddcb 100644
--- a/module/core/reflect_tools/src/reflect/primitive.rs
+++ b/module/core/reflect_tools/src/reflect/primitive.rs
@@ -247,8 +247,10 @@ pub mod orphan
 }
 
 /// Exposed namespace of the module.
+#[ allow( unused_imports ) ]
 pub mod exposed
 {
+  use super::*;
   #[ doc( inline ) ]
   #[ allow( unused_imports ) ]
   pub use super::prelude::*;
diff --git a/module/core/reflect_tools/src/reflect/wrapper.rs b/module/core/reflect_tools/src/reflect/wrapper.rs
index 4cd134650f..36acb18449 100644
--- a/module/core/reflect_tools/src/reflect/wrapper.rs
+++ b/module/core/reflect_tools/src/reflect/wrapper.rs
@@ -31,8 +31,10 @@ pub mod orphan
 }
 
 /// Exposed namespace of the module.
+#[ allow( unused_imports ) ]
 pub mod exposed
 {
+  use super::*;
   #[ doc( inline ) ]
   #[ allow( unused_imports ) ]
   pub use super::
diff --git a/module/core/reflect_tools_meta/Cargo.toml b/module/core/reflect_tools_meta/Cargo.toml
index 75a842e9a1..0ace8e3a22 100644
--- a/module/core/reflect_tools_meta/Cargo.toml
+++ b/module/core/reflect_tools_meta/Cargo.toml
@@ -22,7 +22,7 @@ workspace = true
 [package.metadata.docs.rs]
 features = [ "full" ]
 all-features = false
-# exclude = [ "/tests", "/examples", "-*" ]
+
 
 [lib]
 proc-macro = true
diff --git a/module/core/strs_tools/Cargo.toml b/module/core/strs_tools/Cargo.toml
index 09308568ad..8fbb59a2de 100644
--- a/module/core/strs_tools/Cargo.toml
+++ b/module/core/strs_tools/Cargo.toml
@@ -24,7 +24,7 @@ workspace = true
 features = [ "full" ]
 all-features = false
 
-# exclude = [ "/tests", "/examples", "-*" ]
+
 
 [features]
 default = [
diff --git a/module/core/strs_tools/src/lib.rs b/module/core/strs_tools/src/lib.rs
index 1c5bc9300e..cd3d26ffb2 100644
--- a/module/core/strs_tools/src/lib.rs
+++ b/module/core/strs_tools/src/lib.rs
@@ -32,8 +32,10 @@ pub mod orphan
 
 /// Exposed namespace of the module.
 #[ cfg( feature = "enabled" ) ]
+#[ allow( unused_imports ) ]
 pub mod exposed
 {
+  use super::*;
   pub use super::string::exposed::*;
 }
 
diff --git a/module/core/strs_tools/src/string/indentation.rs b/module/core/strs_tools/src/string/indentation.rs
index 16f7208663..a84ce726fa 100644
--- a/module/core/strs_tools/src/string/indentation.rs
+++ b/module/core/strs_tools/src/string/indentation.rs
@@ -103,8 +103,10 @@ pub mod orphan
 }
 
 /// Exposed namespace of the module.
+#[ allow( unused_imports ) ]
 pub mod exposed
 {
+  use super::*;
   pub use super::protected as indentation;
 
   #[ allow( unused_imports ) ]
diff --git a/module/core/strs_tools/src/string/isolate.rs b/module/core/strs_tools/src/string/isolate.rs
index 78d23f6658..5ad02635ba 100644
--- a/module/core/strs_tools/src/string/isolate.rs
+++ b/module/core/strs_tools/src/string/isolate.rs
@@ -195,8 +195,10 @@ pub mod orphan
 }
 
 /// Exposed namespace of the module.
+#[ allow( unused_imports ) ]
 pub mod exposed
 {
+  use super::*;
   pub use super::protected as isolate;
 
   use super::private as i;
diff --git a/module/core/strs_tools/src/string/mod.rs b/module/core/strs_tools/src/string/mod.rs
index d15f35b69e..4c2443df0a 100644
--- a/module/core/strs_tools/src/string/mod.rs
+++ b/module/core/strs_tools/src/string/mod.rs
@@ -54,8 +54,10 @@ pub mod orphan
 }
 
 /// Exposed namespace of the module.
+#[ allow( unused_imports ) ]
 pub mod exposed
 {
+  use super::*;
   #[ cfg( all( feature = "string_indentation", not( feature = "no_std" ) ) ) ]
   #[ allow( unused_imports ) ]
   pub use super::indentation::exposed::*;
diff --git a/module/core/strs_tools/src/string/number.rs b/module/core/strs_tools/src/string/number.rs
index 29da7a5520..cd6696aea3 100644
--- a/module/core/strs_tools/src/string/number.rs
+++ b/module/core/strs_tools/src/string/number.rs
@@ -34,8 +34,10 @@ pub mod orphan
 }
 
 /// Exposed namespace of the module.
+#[ allow( unused_imports ) ]
 pub mod exposed
 {
+  use super::*;
   pub use super::protected as number;
 
   #[ allow( unused_imports ) ]
diff --git a/module/core/strs_tools/src/string/parse_request.rs b/module/core/strs_tools/src/string/parse_request.rs
index e3c68de8f9..25f0f581d3 100644
--- a/module/core/strs_tools/src/string/parse_request.rs
+++ b/module/core/strs_tools/src/string/parse_request.rs
@@ -506,8 +506,10 @@ pub mod orphan
 }
 
 /// Exposed namespace of the module.
+#[ allow( unused_imports ) ]
 pub mod exposed
 {
+  use super::*;
   pub use super::protected as parse_request;
 
   pub use super::private::
diff --git a/module/core/strs_tools/src/string/split.rs b/module/core/strs_tools/src/string/split.rs
index fc9135fdf5..0594f21c8e 100644
--- a/module/core/strs_tools/src/string/split.rs
+++ b/module/core/strs_tools/src/string/split.rs
@@ -670,8 +670,10 @@ pub mod orphan
 }
 
 /// Exposed namespace of the module.
+#[ allow( unused_imports ) ]
 pub mod exposed
 {
+  use super::*;
   pub use super::protected as split;
 
   pub use super::private::
diff --git a/module/core/test_tools/Cargo.toml b/module/core/test_tools/Cargo.toml
index 18c79678fc..3c928e30e1 100644
--- a/module/core/test_tools/Cargo.toml
+++ b/module/core/test_tools/Cargo.toml
@@ -24,7 +24,7 @@ workspace = true
 features = [ "full" ]
 all-features = false
 
-# exclude = [ "/tests", "/examples", "-*" ]
+
 
 # = features
 
diff --git a/module/core/time_tools/Cargo.toml b/module/core/time_tools/Cargo.toml
index e12847049c..6625bd17ca 100644
--- a/module/core/time_tools/Cargo.toml
+++ b/module/core/time_tools/Cargo.toml
@@ -24,7 +24,7 @@ workspace = true
 features = [ "full" ]
 all-features = false
 
-# exclude = [ "/tests", "/examples", "-*" ]
+
 # include = [
 #   "/rust/impl/time",
 #   "/Cargo.toml",
diff --git a/module/core/time_tools/src/lib.rs b/module/core/time_tools/src/lib.rs
index 9af60e8522..25563d52ba 100644
--- a/module/core/time_tools/src/lib.rs
+++ b/module/core/time_tools/src/lib.rs
@@ -50,8 +50,10 @@ pub mod orphan
 
 /// Exposed namespace of the module.
 #[ cfg( feature = "enabled" ) ]
+#[ allow( unused_imports ) ]
 pub mod exposed
 {
+  use super::*;
   #[ doc( inline ) ]
   #[ allow( unused_imports ) ]
   pub use super::prelude::*;
diff --git a/module/core/typing_tools/Cargo.toml b/module/core/typing_tools/Cargo.toml
index 22f2d3f982..5b128ba0e5 100644
--- a/module/core/typing_tools/Cargo.toml
+++ b/module/core/typing_tools/Cargo.toml
@@ -25,7 +25,7 @@ workspace = true
 features = [ "full" ]
 all-features = false
 
-# exclude = [ "/tests", "/examples", "-*" ]
+
 
 [features]
 
diff --git a/module/core/typing_tools/src/lib.rs b/module/core/typing_tools/src/lib.rs
index 0b54e804ec..43b070d362 100644
--- a/module/core/typing_tools/src/lib.rs
+++ b/module/core/typing_tools/src/lib.rs
@@ -57,8 +57,10 @@ pub mod orphan
 
 /// Exposed namespace of the module.
 #[ cfg( feature = "enabled" ) ]
+#[ allow( unused_imports ) ]
 pub mod exposed
 {
+  use super::*;
   #[ doc( inline ) ]
   #[ allow( unused_imports ) ]
   pub use super::prelude::*;
diff --git a/module/core/typing_tools/src/typing.rs b/module/core/typing_tools/src/typing.rs
index 2e434594ae..f3016d04ef 100644
--- a/module/core/typing_tools/src/typing.rs
+++ b/module/core/typing_tools/src/typing.rs
@@ -32,8 +32,10 @@ pub mod orphan
 }
 
 /// Exposed namespace of the module.
+#[ allow( unused_imports ) ]
 pub mod exposed
 {
+  use super::*;
   #[ doc( inline ) ]
   #[ allow( unused_imports ) ]
   pub use super::prelude::*;
diff --git a/module/core/variadic_from/Cargo.toml b/module/core/variadic_from/Cargo.toml
index 3f41686cfe..bddb31aeaf 100644
--- a/module/core/variadic_from/Cargo.toml
+++ b/module/core/variadic_from/Cargo.toml
@@ -24,7 +24,7 @@ workspace = true
 features = [ "full" ]
 all-features = false
 
-# exclude = [ "/tests", "/examples", "-*" ]
+
 
 [features]
 
diff --git a/module/core/variadic_from/src/lib.rs b/module/core/variadic_from/src/lib.rs
index e05fa1bee2..23616661d1 100644
--- a/module/core/variadic_from/src/lib.rs
+++ b/module/core/variadic_from/src/lib.rs
@@ -45,8 +45,10 @@ pub mod orphan
 
 /// Exposed namespace of the module.
 #[ cfg( feature = "enabled" ) ]
+#[ allow( unused_imports ) ]
 pub mod exposed
 {
+  use super::*;
   #[ doc( inline ) ]
   #[ allow( unused_imports ) ]
   pub use super::prelude::*;
diff --git a/module/core/variadic_from/src/variadic.rs b/module/core/variadic_from/src/variadic.rs
index ed30e42677..6929bb9679 100644
--- a/module/core/variadic_from/src/variadic.rs
+++ b/module/core/variadic_from/src/variadic.rs
@@ -401,8 +401,10 @@ pub mod orphan
 }
 
 /// Exposed namespace of the module.
+#[ allow( unused_imports ) ]
 pub mod exposed
 {
+  use super::*;
   #[ doc( inline ) ]
   #[ allow( unused_imports ) ]
   pub use super::prelude::*;
diff --git a/module/core/wtools/Cargo.toml b/module/core/wtools/Cargo.toml
index 3d2ec71314..8488ccd02b 100644
--- a/module/core/wtools/Cargo.toml
+++ b/module/core/wtools/Cargo.toml
@@ -25,7 +25,7 @@ features = [ "full" ]
 all-features = false
 # rustdoc-args = []
 
-# exclude = [ "/tests", "/examples", "-*" ]
+
 
 # = features
 
@@ -173,22 +173,22 @@ string_split = [ "string", "strs_tools/string_split", "strs_tools/string_parse_r
 error = [ "error_tools" ]
 error_default = [
   "error",
-  "error_for_lib",
-  "error_for_app",
+  "error_typed",
+  "error_untyped",
   # "error_use_std",
 ]
 error_full = [
   "error",
-  "error_for_lib",
-  "error_for_app",
+  "error_typed",
+  "error_untyped",
   # "error_use_std",
 ]
 # error_use_std = [ "error", "error_tools/use_std" ]
 error_no_std = [ "error", "error_tools/no_std" ]
 #error_use_alloc = [ "error", "error_tools/use_alloc" ]
 
-error_for_lib = [ "error", "error_tools/error_for_lib" ]
-error_for_app = [ "error", "error_tools/error_for_app" ]
+error_typed = [ "error", "error_tools/error_typed" ]
+error_untyped = [ "error", "error_tools/error_untyped" ]
 
 # derive
 
diff --git a/module/core/wtools/src/lib.rs b/module/core/wtools/src/lib.rs
index 6f8412f139..9c9b37b6c3 100644
--- a/module/core/wtools/src/lib.rs
+++ b/module/core/wtools/src/lib.rs
@@ -121,8 +121,10 @@ pub mod orphan
 }
 
 /// Exposed namespace of the module.
+#[ allow( unused_imports ) ]
 pub mod exposed
 {
+  use super::*;
   #[ doc( inline ) ]
   #[ allow( unused_imports ) ]
   pub use super::prelude::*;
diff --git a/module/move/assistant/src/client.rs b/module/move/assistant/src/client.rs
index 4cd02b5829..0adc107f96 100644
--- a/module/move/assistant/src/client.rs
+++ b/module/move/assistant/src/client.rs
@@ -60,8 +60,10 @@ pub mod orphan
 }
 
 /// Exposed namespace of the module.
+#[ allow( unused_imports ) ]
 pub mod exposed
 {
+  use super::*;
 
   #[ doc( inline ) ]
   #[ allow( unused_imports ) ]
diff --git a/module/move/assistant/src/lib.rs b/module/move/assistant/src/lib.rs
index 4d5468f9f7..d2c66f4231 100644
--- a/module/move/assistant/src/lib.rs
+++ b/module/move/assistant/src/lib.rs
@@ -41,8 +41,10 @@ pub mod orphan
 }
 
 /// Exposed namespace of the module.
+#[ allow( unused_imports ) ]
 pub mod exposed
 {
+  use super::*;
 
   #[ doc( inline ) ]
   #[ allow( unused_imports ) ]
diff --git a/module/move/crates_tools/src/lib.rs b/module/move/crates_tools/src/lib.rs
index 20a89cd7cf..b797cb5e50 100644
--- a/module/move/crates_tools/src/lib.rs
+++ b/module/move/crates_tools/src/lib.rs
@@ -149,8 +149,10 @@ pub mod orphan
 
 /// Exposed namespace of the module.
 #[ cfg( feature = "enabled" ) ]
+#[ allow( unused_imports ) ]
 pub mod exposed
 {
+  use super::*;
   #[ doc( inline ) ]
   #[ allow( unused_imports ) ]
   pub use super::prelude::*;
diff --git a/module/move/deterministic_rand/Cargo.toml b/module/move/deterministic_rand/Cargo.toml
index d0cc6d1fe5..1a469f1249 100644
--- a/module/move/deterministic_rand/Cargo.toml
+++ b/module/move/deterministic_rand/Cargo.toml
@@ -23,7 +23,7 @@ workspace = true
 [package.metadata.docs.rs]
 features = [ "full" ]
 all-features = false
-# exclude = [ "/tests", "/examples", "-*" ]
+
 
 [features]
 default = [ "enabled", "determinism" ]
diff --git a/module/move/graphs_tools/Cargo.toml b/module/move/graphs_tools/Cargo.toml
index 64e17ebbd0..f0eeb97831 100644
--- a/module/move/graphs_tools/Cargo.toml
+++ b/module/move/graphs_tools/Cargo.toml
@@ -23,7 +23,7 @@ workspace = true
 [package.metadata.docs.rs]
 features = [ "full" ]
 all-features = false
-# exclude = [ "/tests", "/examples", "-*" ]
+
 
 [features]
 default = [
diff --git a/module/move/plot_interface/Cargo.toml b/module/move/plot_interface/Cargo.toml
index 39ad1ab4f8..655513f31d 100644
--- a/module/move/plot_interface/Cargo.toml
+++ b/module/move/plot_interface/Cargo.toml
@@ -23,7 +23,7 @@ workspace = true
 [package.metadata.docs.rs]
 features = [ "full" ]
 all-features = false
-# exclude = [ "/tests", "/examples", "-*" ]
+
 include = [
   "/rust/impl/_blank",
   "/Cargo.toml",
diff --git a/module/move/sqlx_query/Cargo.toml b/module/move/sqlx_query/Cargo.toml
index 08a3ff8a98..fbccba1f74 100644
--- a/module/move/sqlx_query/Cargo.toml
+++ b/module/move/sqlx_query/Cargo.toml
@@ -21,7 +21,7 @@ workspace = true
 [package.metadata.docs.rs]
 features = [ "full" ]
 all-features = false
-# exclude = [ "/tests", "/examples", "-*" ]
+
 
 [features]
 default = [ "enabled" ]
diff --git a/module/move/sqlx_query/src/lib.rs b/module/move/sqlx_query/src/lib.rs
index 1285b5a3de..1a30944275 100644
--- a/module/move/sqlx_query/src/lib.rs
+++ b/module/move/sqlx_query/src/lib.rs
@@ -114,8 +114,10 @@ pub mod orphan
 
 /// Exposed namespace of the module.
 #[ cfg( feature = "enabled" ) ]
+#[ allow( unused_imports ) ]
 pub mod exposed
 {
+  use super::*;
   #[ doc( inline ) ]
   #[ allow( unused_imports ) ]
   pub use super::prelude::*;
diff --git a/module/move/willbe/Cargo.toml b/module/move/willbe/Cargo.toml
index 63c66bd6c0..0fbd4cefdc 100644
--- a/module/move/willbe/Cargo.toml
+++ b/module/move/willbe/Cargo.toml
@@ -24,16 +24,37 @@ workspace = true
 [package.metadata.docs.rs]
 features = [ "full" ]
 all-features = false
-# exclude = [ "/tests", "/examples", "-*" ]
+
 
 [features]
-default = [ "enabled", "progress_bar" ]
-full = [ "enabled", "progress_bar" ]
-enabled = []
+default = [
+  "enabled",
+  "progress_bar",
+]
+full = [
+  "default"
+]
+enabled = [
+  "crates_tools/enabled",
+  "error_tools/enabled",
+  "former/enabled",
+  "iter_tools/enabled",
+  "mod_interface/enabled",
+  "wca/enabled",
+  "proper_path_tools/enabled",
+  "process_tools/enabled",
+  "derive_tools/enabled",
+  "data_type/enabled",
+  "collection_tools/enabled",
+  "macro_tools/enabled",
+]
+
 tracing = [ "dep:tracing", "dep:tracing-subscriber" ]
 progress_bar = [ "dep:indicatif" ]
 
 [dependencies]
+
+## external
 cargo_metadata = "~0.18.1"
 convert_case = "0.6.0"
 flate2 = "~1.0"
@@ -57,6 +78,8 @@ indicatif = { version = "0.17", optional = true }
 prettytable-rs = "0.10"
 serde_json = "1.0" # for CargoMetadata::Package::metadata (need serde_json::Value)
 serde = "1.0" # for CargoMetadata::Package
+parse-display = "0.9" # need because derive_tools don't reexport this correctly
+walkdir = "2.3"
 
 ## internal
 crates_tools = { workspace = true }
@@ -65,8 +88,12 @@ former = { workspace = true, features = [ "default" ] }
 iter_tools = { workspace = true, features = [ "default" ] }
 mod_interface = { workspace = true, features = [ "default" ] }
 wca = { workspace = true, features = [ "default" ] }
-proper_path_tools = { workspace = true, features = [ "default" ] }
+proper_path_tools = { workspace = true, features = [ "default", "path_utf8" ] }
 process_tools = { workspace = true, features = [ "default" ] }
+derive_tools = { workspace = true, features = [ "derive_display", "derive_from_str", "derive_deref", "derive_from", "derive_as_ref" ] }
+data_type = { workspace = true, features = [ "either" ] }
+collection_tools = { workspace = true, features = [ "collection_constructors", "collection_into_constructors" ] }
+macro_tools = { workspace = true, features = [ "default" ] }
 
 [dev-dependencies]
 test_tools = { workspace = true }
diff --git a/module/move/willbe/src/description.md b/module/move/willbe/src/Readme.md
similarity index 100%
rename from module/move/willbe/src/description.md
rename to module/move/willbe/src/Readme.md
diff --git a/module/move/willbe/src/action/cicd_renew.rs b/module/move/willbe/src/action/cicd_renew.rs
index 573a2a13bc..989b9238d1 100644
--- a/module/move/willbe/src/action/cicd_renew.rs
+++ b/module/move/willbe/src/action/cicd_renew.rs
@@ -4,27 +4,22 @@ mod private
 
   use std::
   {
-    path::Path,
     fs::File,
     io::{ Write, Read },
-    collections::BTreeMap
   };
-  // aaa : for Petro : don't use cargo_metadata and Package directly, use facade
-  // aaa : ✅
 
+  use path::{ Path };
+  use collection::BTreeMap;
   use convert_case::{ Casing, Case };
   use handlebars::{ RenderError, TemplateError };
   use toml_edit::Document;
 
-  use _path::AbsolutePath;
-  use crate::manifest::private::CrateDirError;
-  use error_tools::for_lib::Error;
-  use error_tools::dependency::*;
-  use workspace::WorkspacePackage;
+  use entity::PathError;
+  use error::typed::Error;
 
-  use wtools::error::for_app::{ Result, Error as wError };
-  use entity::WorkspaceError;
-  use error_tools::err;
+  use error::untyped::{ Result, Error as wError };
+  use entity::WorkspaceInitError;
+  use error::err;
 
   #[ derive( Debug, Error ) ]
   pub enum CiCdGenerateError
@@ -34,9 +29,9 @@ mod private
     #[ error( "I/O error: {0}" ) ]
     IO( #[ from ] std::io::Error ),
     #[ error( "Crate directory error: {0}" ) ]
-    CrateDir( #[ from ] CrateDirError ),
+    CrateDir( #[ from ] PathError ),
     #[ error( "Workspace error: {0}" ) ]
-    Workspace( #[ from ] WorkspaceError),
+    Workspace( #[ from ] WorkspaceInitError ),
     #[ error( "Template error: {0}" ) ]
     Template( #[ from ] TemplateError ),
     #[ error( "Render error: {0}" ) ]
@@ -47,69 +42,155 @@ mod private
   /// Generate workflows for modules in .github/workflows directory.
   pub fn cicd_renew( base_path : &Path ) -> Result< (), CiCdGenerateError >
   {
-    let workspace_cache = Workspace::with_crate_dir( AbsolutePath::try_from( base_path )?.try_into()? )?;
-    let packages = workspace_cache.packages()?;
-    let username_and_repository = &username_and_repository( &workspace_cache.workspace_root()?.join( "Cargo.toml" ).try_into()?, packages.as_slice() )?;
-    let workspace_root = workspace_cache.workspace_root()?;
+    let workspace_cache = Workspace::try_from( CrateDir::try_from( base_path )? )?;
+    let packages = workspace_cache.packages();
+    let username_and_repository = &username_and_repository
+    (
+      &workspace_cache.workspace_root().join( "Cargo.toml" ).to_path_buf().try_into()?, // qqq
+      packages.clone(),
+      // packages.as_slice(),
+    )?;
+    let workspace_root : &Path = &workspace_cache.workspace_root();
     // find directory for workflows
     let workflow_root = workspace_root.join( ".github" ).join( "workflows" );
     // map packages name's to naming standard
-    // aaa : for Petro : avoid calling packages_get twice
-    // aaa : remove it
-    let names = packages.iter().map( | p | p.name() ).collect::< Vec< _ > >();
-    // map packages path to relative paths fom workspace root, for example D :/work/wTools/module/core/iter_tools => module/core/iter_tools
-    let relative_paths =
-    packages
-    .iter()
-    .map( | p | p.manifest_path() )
-    .filter_map( | p | p.strip_prefix( workspace_root ).ok() )
-    .map( | p | p.with_file_name( "" ) )
-    .collect::< Vec< _ > >();
+    // let names = packages.map( | p | p.name() ).collect::< Vec< _ > >();
+    let names = packages.clone().map( | p | p.name().to_string() );
+
+    // dbg!( &workflow_root );
+
+    // map packages path to relative paths fom workspace root,
+    // for example D:/work/wTools/module/core/iter_tools => module/core/iter_tools
+    let relative_paths = packages
+    .map( | p | p.manifest_file().ok() ) // aaa : rid of unwrap : removed
+    .filter_map( | p |
+    {
+      // dbg!( &workspace_root );
+      Some( path::normalize( workspace_root ) ).and_then( | root_str |
+      {
+
+        dbg!( &root_str );
+        dbg!( &p );
+
+        Some( p?.strip_prefix( root_str ).ok()?.to_path_buf() )
+        //.map( | s | s.display().to_string() ).ok()
+      })
+    })
+    .map( | p |
+    {
+      path::normalize( p.parent().unwrap() )
+      // dbg!( &p );
+      // let mut path = PathBuf::from( p );
+      // path.set_file_name( "" );
+      // path
+    });
 
     // preparing templates
     let mut handlebars = handlebars::Handlebars::new();
 
-    handlebars.register_template_string( "auto_pr_to", include_str!( "../../template/workflow/auto_pr_to.hbs" ) )?;
-    handlebars.register_template_string( "appropraite_branch_for", include_str!( "../../template/workflow/appropraite_branch_for.hbs" ) )?;
-    handlebars.register_template_string( "auto_merge_to", include_str!( "../../template/workflow/auto_merge_to.hbs" ) )?;
-    handlebars.register_template_string( "standard_rust_pull_request", include_str!( "../../template/workflow/standard_rust_pull_request.hbs" ) )?;
-    handlebars.register_template_string( "module_push", include_str!( "../../template/workflow/module_push.hbs" ) )?;
-
+    handlebars.register_template_string
+    (
+      "auto_pr_to",
+      include_str!( "../../template/workflow/auto_pr_to.hbs" )
+    )?;
+    handlebars.register_template_string
+    (
+      "appropraite_branch_for",
+      include_str!( "../../template/workflow/appropraite_branch_for.hbs" )
+    )?;
+    handlebars.register_template_string
+    (
+      "auto_merge_to",
+      include_str!( "../../template/workflow/auto_merge_to.hbs" )
+    )?;
+    handlebars.register_template_string
+    (
+      "standard_rust_pull_request",
+      include_str!( "../../template/workflow/standard_rust_pull_request.hbs" )
+    )?;
+    handlebars.register_template_string
+    (
+      "module_push",
+      include_str!( "../../template/workflow/module_push.hbs" )
+    )?;
 
     // qqq : for Petro : instead of iterating each file manually, iterate each file in loop
 
+    // use similar::DiffableStr;
+
     // creating workflow for each module
-    for ( name, relative_path ) in names.iter().zip( relative_paths.iter() )
+    for ( name, relative_path ) in names.zip( relative_paths )
     {
       // generate file names
-      let workflow_file_name = workflow_root.join( format!( "module_{}_push.yml", name.to_case( Case::Snake ) ) );
-      let path = relative_path.join( "Cargo.toml" );
-      let mut data = BTreeMap::new();
+      let workflow_file_name = workflow_root
+      .join( format!( "module_{}_push.yml", name.to_case( Case::Snake ) ) );
+      let manifest_file = relative_path.join( "Cargo.toml" );
+      let mut data : BTreeMap< &str, &str > = BTreeMap::new();
       data.insert( "name", name.as_str() );
       data.insert( "username_and_repository", username_and_repository.0.as_str() );
       data.insert( "branch", "alpha" );
-      let path = path.as_str().replace( "\\", "/" );
-      data.insert( "manifest_path", path.as_str() );
+      let manifest_file = manifest_file.to_string_lossy().replace( "\\", "/" );
+      let manifest_file = manifest_file.trim_start_matches( '/' );
+      data.insert( "manifest_path", manifest_file );
       let content = handlebars.render( "module_push", &data )?;
       file_write( &workflow_file_name, &content )?;
+
+      println!( "file_write : {:?}", &workflow_file_name )
     }
 
-    file_write( &workflow_root.join( "appropriate_branch.yml" ), include_str!( "../../template/workflow/appropriate_branch.yml" ) )?;
+    dbg!( &workflow_root );
+
+    file_write
+    (
+      &workflow_root
+      .join("appropriate_branch.yml" ),
+      include_str!( "../../template/workflow/appropriate_branch.yml" )
+    )?;
+
+    let data = map_prepare_for_appropriative_branch
+    (
+      "- beta",
+      username_and_repository.0.as_str(),
+      "alpha",
+      "alpha",
+      "beta"
+    );
+    file_write
+    (
+      &workflow_root.join( "appropriate_branch_beta.yml" ),
+      &handlebars.render( "appropraite_branch_for", &data )?
+    )?;
 
-    let data = map_prepare_for_appropriative_branch( "- beta", username_and_repository.0.as_str(), "alpha", "alpha", "beta" );
-    file_write( &workflow_root.join( "appropriate_branch_beta.yml" ), &handlebars.render( "appropraite_branch_for", &data )? )?;
+    let data = map_prepare_for_appropriative_branch
+    (
+      "- main\n      - master",
+      username_and_repository.0.as_str(),
+      "alpha",
+      "beta",
+      "master"
+    );
 
-    let data = map_prepare_for_appropriative_branch( "- main\n      - master", username_and_repository.0.as_str(), "alpha", "beta", "master" );
-    file_write( &workflow_root.join( "appropriate_branch_master.yml" ), &handlebars.render( "appropraite_branch_for", &data )? )?;
+    file_write
+    (
+      &workflow_root.join( "appropriate_branch_master.yml" ),
+      &handlebars.render( "appropraite_branch_for", &data )?
+    )?;
 
     let mut data = BTreeMap::new();
     data.insert( "name", "beta" );
     data.insert( "group_branch", "beta" );
     data.insert( "branch", "alpha" );
 
-    file_write( &workflow_root.join( "auto_merge_to_beta.yml" ), &handlebars.render( "auto_merge_to", &data )? )?;
-
-    file_write( &workflow_root.join( "auto_pr.yml" ), include_str!( "../../template/workflow/auto_pr.yml" ) )?;
+    file_write
+    (
+      &workflow_root.join( "auto_merge_to_beta.yml" ),
+      &handlebars.render( "auto_merge_to", &data )?
+    )?;
+    file_write
+    (
+      &workflow_root.join( "auto_pr.yml" ),
+      include_str!( "../../template/workflow/auto_pr.yml" )
+    )?;
 
     let mut data = BTreeMap::new();
     data.insert( "name", "alpha" );
@@ -135,7 +216,11 @@ mod private
     data.insert( "src_branch", "${{ github.ref_name }}" );
     data.insert( "dest_branch", "alpha" );
 
-    file_write( &workflow_root.join( "auto_pr_to_alpha.yml" ), &handlebars.render( "auto_pr_to", &data )? )?;
+    file_write
+    (
+      &workflow_root.join( "auto_pr_to_alpha.yml" ),
+      &handlebars.render( "auto_pr_to", &data )?
+    )?;
 
     let mut data = BTreeMap::new();
     data.insert( "name", "beta" );
@@ -145,7 +230,11 @@ mod private
     data.insert( "src_branch", "alpha" );
     data.insert( "dest_branch", "beta" );
 
-    file_write( &workflow_root.join( "auto_pr_to_beta.yml" ), &handlebars.render( "auto_pr_to", &data )? )?;
+    file_write
+    (
+      &workflow_root.join( "auto_pr_to_beta.yml" ),
+      &handlebars.render( "auto_pr_to", &data )?
+    )?;
 
     let mut data = BTreeMap::new();
     data.insert( "name", "master" );
@@ -155,27 +244,63 @@ mod private
     data.insert( "src_branch", "beta" );
     data.insert( "dest_branch", "master" );
 
-    file_write( &workflow_root.join( "auto_pr_to_master.yml" ), &handlebars.render( "auto_pr_to", &data )? )?;
+    file_write
+    (
+      &workflow_root.join( "auto_pr_to_master.yml" ),
+      &handlebars.render( "auto_pr_to", &data )?
+    )?;
 
-    file_write( &workflow_root.join( "runs_clean.yml" ),  include_str!( "../../template/workflow/rust_clean.yml" ) )?;
+    file_write
+    (
+      &workflow_root.join( "runs_clean.yml" ),
+      include_str!( "../../template/workflow/rust_clean.yml" )
+    )?;
 
     let mut data = BTreeMap::new();
     data.insert( "username_and_repository", username_and_repository.0.as_str() );
 
-    file_write( &workflow_root.join( "standard_rust_pull_request.yml" ), &handlebars.render( "standard_rust_pull_request", &data )? )?;
+    file_write
+    (
+      &workflow_root.join( "standard_rust_pull_request.yml" ),
+      &handlebars.render( "standard_rust_pull_request", &data )?
+    )?;
 
-    file_write( &workflow_root.join( "standard_rust_push.yml" ), include_str!( "../../template/workflow/standard_rust_push.yml" ) )?;
+    file_write
+    (
+      &workflow_root.join( "standard_rust_push.yml" ),
+      include_str!( "../../template/workflow/standard_rust_push.yml" )
+    )?;
 
-    file_write( &workflow_root.join( "for_pr_rust_push.yml" ), include_str!( "../../template/workflow/for_pr_rust_push.yml" ) )?;
+    file_write
+    (
+      &workflow_root.join( "for_pr_rust_push.yml" ),
+      include_str!( "../../template/workflow/for_pr_rust_push.yml" )
+    )?;
+
+    file_write
+    (
+      &workflow_root.join( "standard_rust_scheduled.yml" ),
+      include_str!( "../../template/workflow/standard_rust_scheduled.yml" )
+    )?;
 
-    file_write( &workflow_root.join( "standard_rust_scheduled.yml" ), include_str!( "../../template/workflow/standard_rust_scheduled.yml" ) )?;
+    file_write
+    (
+      &workflow_root.join( "standard_rust_status.yml" ),
+      include_str!( "../../template/workflow/standard_rust_status.yml" )
+    )?;
 
-    file_write( &workflow_root.join( "standard_rust_status.yml" ), include_str!( "../../template/workflow/standard_rust_status.yml" ) )?;
+    file_write
+    (
+      &workflow_root.join( "status_checks_rules_update.yml" ),
+      include_str!( "../../template/workflow/status_checks_rules_update.yml" )
+    )?;
 
-    file_write( &workflow_root.join( "status_checks_rules_update.yml" ), include_str!( "../../template/workflow/status_checks_rules_update.yml" ) )?;
+    file_write
+    (
+      &workflow_root.join( "Readme.md" ),
+      include_str!( "../../template/workflow/Readme.md" )
+    )?;
 
-    file_write( &workflow_root.join( "Readme.md" ), include_str!( "../../template/workflow/Readme.md" ) )?;
-    
     Ok( () )
   }
 
@@ -220,18 +345,17 @@ mod private
   #[derive( Debug ) ]
   struct UsernameAndRepository( String );
 
-  // aaa : for Petro : not clear how output should look
-  // aaa : add to documentation
-  // aaa : for Petro : newtype?
-  // aaa : replace to AbsolutePath
-  // aaa : for Petro : why mut?
-  // aaa : change signature
   /// Searches and extracts the username and repository name from the repository URL.
   /// The repository URL is first sought in the Cargo.toml file of the workspace;
   /// if not found there, it is then searched in the Cargo.toml file of the module.
   /// If it is still not found, the search continues in the GitHub remotes.
   /// Result looks like this: `Wandalen/wTools`
-  fn username_and_repository( cargo_toml_path : &AbsolutePath, packages : &[ WorkspacePackage ] ) -> Result< UsernameAndRepository >
+  fn username_and_repository< 'a >
+  (
+    cargo_toml_path : &AbsolutePath,
+    packages : impl Iterator< Item = WorkspacePackageRef< 'a > >,
+  )
+  -> Result< UsernameAndRepository >
   {
       let mut contents = String::new();
       File::open( cargo_toml_path )?.read_to_string( &mut contents )?;
@@ -245,7 +369,7 @@ mod private
       .map( String::from );
       if let Some( url ) = url
       {
-        return url::extract_repo_url( &url )
+        return url::repo_url_extract( &url )
         .and_then( | url | url::git_info_extract( &url ).ok() )
         .map( UsernameAndRepository )
         .ok_or_else( || err!( "Fail to parse repository url from workspace Cargo.toml"))
@@ -255,14 +379,15 @@ mod private
         let mut url = None;
         for package in packages
         {
-          if let Ok( wu ) = manifest::private::repo_url( package.manifest_path().parent().unwrap().as_std_path() )
+          // if let Ok( wu ) = manifest::private::repo_url( package.manifest_file().parent().unwrap().as_std_path() )
+          if let Ok( wu ) = manifest::repo_url( &package.crate_dir()? )
           {
             url = Some( wu );
             break;
           }
         }
         return url
-        .and_then( | url | url::extract_repo_url( &url ) )
+        .and_then( | url | url::repo_url_extract( &url ) )
         .and_then( | url | url::git_info_extract( &url ).ok() )
         .map( UsernameAndRepository )
         .ok_or_else( || err!( "Fail to extract repository url") )
diff --git a/module/move/willbe/src/action/deploy_renew.rs b/module/move/willbe/src/action/deploy_renew.rs
index 2bd04f640c..8c45a714cb 100644
--- a/module/move/willbe/src/action/deploy_renew.rs
+++ b/module/move/willbe/src/action/deploy_renew.rs
@@ -2,153 +2,149 @@ mod private
 {
   use crate::*;
   use std::path::Path;
-  use error_tools::{for_app::Context, Result};
+  use error::{ untyped::Context, Result };
   use tool::template::*;
 
-  /// Template for creating deploy files.
-  ///
-  /// Includes terraform deploy options to GCP, and Hetzner,
-  /// a Makefile for useful commands, and a key directory.
-  #[ derive( Debug ) ]
-  pub struct DeployTemplate
-  {
-    files : DeployTemplateFiles,
-    parameters : TemplateParameters,
-    values : TemplateValues,
-  }
-
-  // qqq : for Viktor : why DeployTemplate can't be part of template.rs?
-
-  impl Template< DeployTemplateFiles > for DeployTemplate
-  {
-    fn create_all( self, path : &Path ) -> Result< () >
-    {
-      self.files.create_all( path, &self.values )
-    }
-
-    fn parameters( &self ) -> &TemplateParameters
-    {
-      &self.parameters
-    }
-
-    fn set_values( &mut self, values : TemplateValues )
-    {
-      self.values = values
-    }
-
-    fn get_values( &self ) -> &TemplateValues
-    {
-      &self.values
-    }
-
-    fn get_values_mut( &mut self ) -> &mut TemplateValues
-    {
-      &mut self.values
-    }
-
-    fn parameter_storage( &self ) -> &Path {
-      "./.deploy_template.toml".as_ref()
-    }
-
-    fn template_name( &self ) -> &'static str {
-      "deploy"
-    }
-  }
-
-  impl Default for DeployTemplate
-  {
-    fn default() -> Self
-    {
-      let parameters = TemplateParameters::former()
-      .parameter( "gcp_project_id" ).is_mandatory( true ).end()
-      .parameter( "gcp_region" ).end()
-      .parameter( "gcp_artifact_repo_name" ).end()
-      .parameter( "docker_image_name" ).end()
-      .form();
-
-      Self
-      {
-        files : Default::default(),
-        parameters,
-        values : Default::default(),
-      }
-    }
-  }
-
-  // qqq : for Viktor : is that structure required?
-  /// Files for the deploy template.
-  ///
-  /// Default implementation contains all required files.
-  #[ derive( Debug ) ]
-  pub struct DeployTemplateFiles( Vec< TemplateFileDescriptor > );
-
-  impl Default for DeployTemplateFiles
-  {
-    fn default() -> Self
-    {
-      let formed = TemplateFilesBuilder::former()
-      // root
-      .file().data( include_str!( "../../template/deploy/.deploy_template.toml.hbs" ) ).path( "./.deploy_template.toml" ).mode( WriteMode::TomlExtend ).is_template( true ).end()
-      .file().data( include_str!( "../../template/deploy/Makefile.hbs" ) ).path( "./Makefile" ).is_template( true ).end()
-      // /key
-      .file().data( include_str!( "../../template/deploy/key/pack.sh" ) ).path( "./key/pack.sh" ).end()
-      .file().data( include_str!( "../../template/deploy/key/Readme.md" ) ).path( "./key/Readme.md" ).end()
-      // /deploy/
-      .file().data( include_str!( "../../template/deploy/deploy/Dockerfile" ) ).path( "./deploy/Dockerfile" ).end()
-      .file().data( include_str!( "../../template/deploy/deploy/Readme.md" ) ).path( "./deploy/Readme.md" ).end()
-      // /deploy/gar
-      .file().data( include_str!( "../../template/deploy/deploy/gar/Readme.md" ) ).path( "./deploy/gar/Readme.md" ).end()
-      .file().data( include_str!( "../../template/deploy/deploy/gar/main.tf" ) ).path( "./deploy/gar/main.tf" ).end()
-      .file().data( include_str!( "../../template/deploy/deploy/gar/outputs.tf" ) ).path( "./deploy/gar/outputs.tf" ).end()
-      .file().data( include_str!( "../../template/deploy/deploy/gar/variables.tf" ) ).path( "./deploy/gar/variables.tf" ).end()
-      // /deploy/gce
-      .file().data( include_str!( "../../template/deploy/deploy/gce/Readme.md" ) ).path( "./deploy/gce/Readme.md" ).end()
-      .file().data( include_str!( "../../template/deploy/deploy/gce/main.tf" ) ).path( "./deploy/gce/main.tf" ).end()
-      .file().data( include_str!( "../../template/deploy/deploy/gce/outputs.tf" ) ).path( "./deploy/gce/outputs.tf" ).end()
-      .file().data( include_str!( "../../template/deploy/deploy/gce/variables.tf" ) ).path( "./deploy/gce/variables.tf" ).end()
-      // /deploy/gce/templates
-      .file().data( include_str!( "../../template/deploy/deploy/gce/templates/cloud-init.tpl" ) ).path( "./deploy/gce/templates/cloud-init.tpl" ).end()
-      // /deploy/gcs
-      .file().data( include_str!( "../../template/deploy/deploy/gcs/main.tf" ) ).path( "./deploy/gcs/main.tf" ).end()
-      // /deploy/hetzner
-      .file().data( include_str!( "../../template/deploy/deploy/hetzner/main.tf" ) ).path( "./deploy/hetzner/main.tf" ).end()
-      .file().data( include_str!( "../../template/deploy/deploy/hetzner/outputs.tf" ) ).path( "./deploy/hetzner/outputs.tf" ).end()
-      .file().data( include_str!( "../../template/deploy/deploy/hetzner/variables.tf" ) ).path( "./deploy/hetzner/variables.tf" ).end()
-      // /deploy/hetzner/templates
-      .file().data( include_str!( "../../template/deploy/deploy/hetzner/templates/cloud-init.tpl" ) ).path( "./deploy/hetzner/templates/cloud-init.tpl" ).end()
-      // /deploy/aws
-      .file().data( include_str!( "../../template/deploy/deploy/aws/main.tf" ) ).path( "./deploy/aws/main.tf" ).end()
-      .file().data( include_str!( "../../template/deploy/deploy/aws/outputs.tf" ) ).path( "./deploy/aws/outputs.tf" ).end()
-      .file().data( include_str!( "../../template/deploy/deploy/aws/variables.tf" ) ).path( "./deploy/aws/variables.tf" ).end()
-      // /deploy/aws/templates
-      .file().data( include_str!( "../../template/deploy/deploy/aws/templates/cloud-init.tpl" ) ).path( "./deploy/aws/templates/cloud-init.tpl" ).end()
-      .form();
-
-      Self( formed.files )
-    }
-  }
-
-  // qqq : for Viktor : should not be required
-  impl TemplateFiles for DeployTemplateFiles {}
-  // qqq : for Viktor : should not be required
-  impl IntoIterator for DeployTemplateFiles
-  {
-    type Item = TemplateFileDescriptor;
-
-    type IntoIter = std::vec::IntoIter< Self::Item >;
-
-    fn into_iter( self ) -> Self::IntoIter
-    {
-      self.0.into_iter()
-    }
-  }
-
-  fn get_dir_name() -> Result< String >
-  {
-    let current_dir = std::env::current_dir()?;
-    let current_dir = current_dir.components().last().context( "Invalid current directory" )?;
-    Ok( current_dir.as_os_str().to_string_lossy().into() )
-  }
+  // /// Template for creating deploy files.
+  // ///
+  // /// Includes terraform deploy options to GCP, and Hetzner,
+  // /// a Makefile for useful commands, and a key directory.
+  // #[ derive( Debug ) ]
+  // pub struct DeployTemplate
+  // {
+  //   files : DeployTemplateFiles,
+  //   parameters : TemplateParameters,
+  //   values : TemplateValues,
+  // }
+
+  // // qqq : for Viktor : why DeployTemplate can't be part of template.rs?
+
+  // impl Template< DeployTemplateFiles > for DeployTemplate
+  // {
+  //   fn create_all( self, path : &Path ) -> Result< () >
+  //   {
+  //     self.files.create_all( path, &self.values )
+  //   }
+
+  //   fn parameters( &self ) -> &TemplateParameters
+  //   {
+  //     &self.parameters
+  //   }
+
+  //   fn set_values( &mut self, values : TemplateValues )
+  //   {
+  //     self.values = values
+  //   }
+
+  //   fn get_values( &self ) -> &TemplateValues
+  //   {
+  //     &self.values
+  //   }
+
+  //   fn get_values_mut( &mut self ) -> &mut TemplateValues
+  //   {
+  //     &mut self.values
+  //   }
+
+  //   fn parameter_storage( &self ) -> &Path {
+  //     "./.deploy_template.toml".as_ref()
+  //   }
+
+  //   fn template_name( &self ) -> &'static str {
+  //     "deploy"
+  //   }
+  // }
+
+  // impl Default for DeployTemplate
+  // {
+  //   fn default() -> Self
+  //   {
+  //     let parameters = TemplateParameters::former()
+  //     .parameter( "gcp_project_id" ).is_mandatory( true ).end()
+  //     .parameter( "gcp_region" ).end()
+  //     .parameter( "gcp_artifact_repo_name" ).end()
+  //     .parameter( "docker_image_name" ).end()
+  //     .form();
+
+  //     Self
+  //     {
+  //       files : Default::default(),
+  //       parameters,
+  //       values : Default::default(),
+  //     }
+  //   }
+  // }
+
+  // // qqq : for Viktor : is that structure required?
+  // /// Files for the deploy template.
+  // ///
+  // /// Default implementation contains all required files.
+  // #[ derive( Debug ) ]
+  // pub struct DeployTemplateFiles( Vec< TemplateFileDescriptor > );
+
+  // impl Default for DeployTemplateFiles
+  // {
+  //   fn default() -> Self
+  //   {
+  //     let formed = TemplateFilesBuilder::former()
+  //     // root
+  //     .file().data( include_str!( "../../template/deploy/.deploy_template.toml.hbs" ) ).path( "./.deploy_template.toml" ).mode( WriteMode::TomlExtend ).is_template( true ).end()
+  //     .file().data( include_str!( "../../template/deploy/Makefile.hbs" ) ).path( "./Makefile" ).is_template( true ).end()
+  //     // /key
+  //     .file().data( include_str!( "../../template/deploy/key/pack.sh" ) ).path( "./key/pack.sh" ).end()
+  //     .file().data( include_str!( "../../template/deploy/key/Readme.md" ) ).path( "./key/Readme.md" ).end()
+  //     // /deploy/
+  //     .file().data( include_str!( "../../template/deploy/deploy/Dockerfile" ) ).path( "./deploy/Dockerfile" ).end()
+  //     .file().data( include_str!( "../../template/deploy/deploy/Readme.md" ) ).path( "./deploy/Readme.md" ).end()
+  //     // /deploy/gar
+  //     .file().data( include_str!( "../../template/deploy/deploy/gar/Readme.md" ) ).path( "./deploy/gar/Readme.md" ).end()
+  //     .file().data( include_str!( "../../template/deploy/deploy/gar/main.tf" ) ).path( "./deploy/gar/main.tf" ).end()
+  //     .file().data( include_str!( "../../template/deploy/deploy/gar/outputs.tf" ) ).path( "./deploy/gar/outputs.tf" ).end()
+  //     .file().data( include_str!( "../../template/deploy/deploy/gar/variables.tf" ) ).path( "./deploy/gar/variables.tf" ).end()
+  //     // /deploy/gce
+  //     .file().data( include_str!( "../../template/deploy/deploy/gce/Readme.md" ) ).path( "./deploy/gce/Readme.md" ).end()
+  //     .file().data( include_str!( "../../template/deploy/deploy/gce/main.tf" ) ).path( "./deploy/gce/main.tf" ).end()
+  //     .file().data( include_str!( "../../template/deploy/deploy/gce/outputs.tf" ) ).path( "./deploy/gce/outputs.tf" ).end()
+  //     .file().data( include_str!( "../../template/deploy/deploy/gce/variables.tf" ) ).path( "./deploy/gce/variables.tf" ).end()
+  //     // /deploy/gce/templates
+  //     .file().data( include_str!( "../../template/deploy/deploy/gce/templates/cloud-init.tpl" ) ).path( "./deploy/gce/templates/cloud-init.tpl" ).end()
+  //     // /deploy/gcs
+  //     .file().data( include_str!( "../../template/deploy/deploy/gcs/main.tf" ) ).path( "./deploy/gcs/main.tf" ).end()
+  //     // /deploy/hetzner
+  //     .file().data( include_str!( "../../template/deploy/deploy/hetzner/main.tf" ) ).path( "./deploy/hetzner/main.tf" ).end()
+  //     .file().data( include_str!( "../../template/deploy/deploy/hetzner/outputs.tf" ) ).path( "./deploy/hetzner/outputs.tf" ).end()
+  //     .file().data( include_str!( "../../template/deploy/deploy/hetzner/variables.tf" ) ).path( "./deploy/hetzner/variables.tf" ).end()
+  //     // /deploy/hetzner/templates
+  //     .file().data( include_str!( "../../template/deploy/deploy/hetzner/templates/cloud-init.tpl" ) ).path( "./deploy/hetzner/templates/cloud-init.tpl" ).end()
+  //     // /deploy/aws
+  //     .file().data( include_str!( "../../template/deploy/deploy/aws/main.tf" ) ).path( "./deploy/aws/main.tf" ).end()
+  //     .file().data( include_str!( "../../template/deploy/deploy/aws/outputs.tf" ) ).path( "./deploy/aws/outputs.tf" ).end()
+  //     .file().data( include_str!( "../../template/deploy/deploy/aws/variables.tf" ) ).path( "./deploy/aws/variables.tf" ).end()
+  //     // /deploy/aws/templates
+  //     .file().data( include_str!( "../../template/deploy/deploy/aws/templates/cloud-init.tpl" ) ).path( "./deploy/aws/templates/cloud-init.tpl" ).end()
+  //     .form();
+
+  //     Self( formed.files )
+  //   }
+  // }
+
+  // // qqq : for Viktor : should not be required
+  // impl TemplateFiles for DeployTemplateFiles {}
+  // // qqq : for Viktor : should not be required
+  // impl IntoIterator for DeployTemplateFiles
+  // {
+  //   type Item = TemplateFileDescriptor;
+
+  //   type IntoIter = std::vec::IntoIter< Self::Item >;
+
+  //   fn into_iter( self ) -> Self::IntoIter
+  //   {
+  //     self.0.into_iter()
+  //   }
+  // }
+
+  // aaa : for Petro : redundant function
+  // aaa : this function not my, but ok I'll remove it.
 
   fn dir_name_to_formatted( dir_name : &str, separator : &str ) -> String
   {
@@ -162,17 +158,32 @@ mod private
   pub fn deploy_renew
   (
     path : &Path,
-    mut template : DeployTemplate
+    mut template : TemplateHolder
   ) -> Result< () >
   {
     if let None = template.load_existing_params( path )
     {
-      let current_dir = get_dir_name()?;
+      let current_dir = std::env::current_dir()?;
+      // qqq : for Petro : use file_name
+      // qqq : for Kos : bad description
+      let current_dir = current_dir
+      .components()
+      .last()
+      .context( "Invalid current directory" )?;
+
+      let current_dir = current_dir.as_os_str().to_string_lossy();
       let artifact_repo_name = dir_name_to_formatted( &current_dir, "-" );
       let docker_image_name = dir_name_to_formatted( &current_dir, "_" );
-      template.values.insert_if_empty( "gcp_artifact_repo_name", wca::Value::String( artifact_repo_name ) );
-      template.values.insert_if_empty( "docker_image_name", wca::Value::String( docker_image_name ) );
-      template.values.insert_if_empty( "gcp_region", wca::Value::String( "europe-central2".into() ) );
+      template
+      .values
+      .insert_if_empty( "gcp_artifact_repo_name", wca::Value::String( artifact_repo_name ) );
+
+      template
+      .values
+      .insert_if_empty( "docker_image_name", wca::Value::String( docker_image_name ) );
+      template
+      .values
+      .insert_if_empty( "gcp_region", wca::Value::String( "europe-central2".into() ) );
     }
     template.create_all( path )?;
     Ok( () )
@@ -183,5 +194,5 @@ mod private
 crate::mod_interface!
 {
   orphan use deploy_renew;
-  orphan use DeployTemplate;
+  //orphan use DeployTemplate;
 }
diff --git a/module/move/willbe/src/action/features.rs b/module/move/willbe/src/action/features.rs
index 47b9e98f44..6560d1982b 100644
--- a/module/move/willbe/src/action/features.rs
+++ b/module/move/willbe/src/action/features.rs
@@ -4,20 +4,21 @@ mod private
 
   use std::
   {
-    collections::{ BTreeMap, HashMap },
     fmt
   };
+  use collection::{ BTreeMap, HashMap };
 
-  use _path::AbsolutePath;
+  // // use path::AbsolutePath;
   use former::Former;
-  use error_tools::{ for_app::Context, Result };
-  use workspace::Workspace;
+  use error::{ untyped::Context, Result };
+  // use workspace::Workspace;
 
   /// Options available for the .features command
   #[ derive( Debug, Former ) ]
   pub struct FeaturesOptions
   {
-    manifest_dir : AbsolutePath,
+    // crate_dir : AbsolutePath,
+    crate_dir : CrateDir,
     with_features_deps : bool,
   }
 
@@ -62,23 +63,38 @@ mod private
         )
       }
       )
-    } 
+    }
   }
 
   /// List features
-  pub fn features( FeaturesOptions { manifest_dir, with_features_deps } : FeaturesOptions ) -> Result< FeaturesReport >
+  pub fn features( FeaturesOptions { crate_dir, with_features_deps } : FeaturesOptions )
+  -> Result< FeaturesReport >
   {
-    let workspace = Workspace::with_crate_dir( CrateDir::try_from( manifest_dir.clone() )? ).context( "Failed to find workspace" )?;
-    let packages = workspace.packages()?.into_iter().filter
-    ( | package |
-      package.manifest_path().as_str().starts_with( manifest_dir.as_ref().as_os_str().to_str().unwrap() )
-    ).collect::< Vec< _ > >();
+    let workspace = Workspace::try_from( crate_dir.clone() ).context( "Failed to find workspace" )?;
+    let packages = workspace.packages().filter
+    (
+      | package |
+      {
+        if let Ok( manifest_file ) = package.manifest_file()
+        {
+          manifest_file.inner().starts_with(crate_dir.clone().absolute_path())
+        }
+        else
+        {
+          false
+        }
+      } // aaa : remove unwrap
+      // aaa : done
+    );
+    // ).collect::< Vec< _ > >(); qqq : rid of. put type at var
     let mut report = FeaturesReport
     {
       with_features_deps,
       ..Default::default()
     };
-    packages.iter().for_each
+    packages
+    // .iter()
+    .for_each
     ( | package |
     {
       let features = package.features();
diff --git a/module/move/willbe/src/action/list.rs b/module/move/willbe/src/action/list.rs
index 6e4bd01dc0..73e50679e4 100644
--- a/module/move/willbe/src/action/list.rs
+++ b/module/move/willbe/src/action/list.rs
@@ -2,35 +2,25 @@
 mod private
 {
   use crate::*;
-  use std::
-  {
-    fmt::{ Formatter, Write },
-    path::PathBuf,
-    collections::HashSet,
-  };
-  use std::collections::HashMap;
+
+  use std::{ fmt, str };
   use petgraph::
   {
-    prelude::*,
+    prelude::{ Dfs, EdgeRef },
     algo::toposort,
     visit::Topo,
+    Graph,
   };
-  use std::str::FromStr;
-  use packages::FilterMapOptions;
-  use wtools::error::
+  use
   {
-    for_app::{ Error, Context },
-    err
+    error::{ Context, untyped, format_err, err },
+    error::ErrWith,
   };
-  // aaa : for Petro : don't use cargo_metadata and Package directly, use facade
-  // aaa : ✅
-
-  use petgraph::prelude::{ Dfs, EdgeRef };
-  use former::Former;
+  use tool::{ TreePrinter, ListNodeReport };
 
-  use workspace::Workspace;
-  use _path::AbsolutePath;
-  use workspace::WorkspacePackage;
+//   use petgraph::prelude::{ Dfs, EdgeRef };
+//   use former::Former;
+//   use workspace::Workspace;
 
   /// Args for `list` action.
   #[ derive( Debug, Default, Copy, Clone ) ]
@@ -43,9 +33,9 @@ mod private
     Topological,
   }
 
-  impl FromStr for ListFormat
+  impl str::FromStr for ListFormat
   {
-    type Err = Error;
+    type Err = untyped::Error;
 
     fn from_str( s : &str ) -> Result< Self, Self::Err >
     {
@@ -109,9 +99,9 @@ mod private
     Local,
   }
 
-  impl FromStr for ListFilter
+  impl str::FromStr for ListFilter
   {
-    type Err = Error;
+    type Err = untyped::Error;
 
     fn from_str( s : &str ) -> Result< Self, Self::Err >
     {
@@ -144,144 +134,143 @@ mod private
   /// - `path_to_manifest`: A `CrateDir` representing the path to the manifest of the crates.
   /// - `format`: A `ListFormat` enum representing the desired format of the output.
   /// - `dependency_sources`: A `HashSet` of `DependencySource` representing the sources of the dependencies.
-  #[ derive( Debug, Former ) ]
+  #[ derive( Debug, former::Former ) ]
   pub struct ListOptions
   {
     path_to_manifest : CrateDir,
     format : ListFormat,
-    info : HashSet< PackageAdditionalInfo >,
-    dependency_sources : HashSet< DependencySource >,
-    dependency_categories : HashSet< DependencyCategory >,
-  }
-
-  struct Symbols
-  {
-    down : &'static str,
-    tee : &'static str,
-    ell : &'static str,
-    right : &'static str,
-  }
-
-  // qqq : fro Bohdan : abstract and move out tree printing. or reuse ready solution for tree printing
-  // stick to single responsibility
-  const UTF8_SYMBOLS : Symbols = Symbols
-  {
-    down : "│",
-    tee  : "├",
-    ell  : "└",
-    right : "─",
-  };
-
-  /// Represents a node in a dependency graph.
-  /// It holds essential information about the project dependencies. It is also capable
-  /// of holding any nested dependencies in a recursive manner, allowing the modeling
-  /// of complex dependency structures.
-  #[ derive( Debug, Clone, Eq, PartialEq ) ]
-  pub struct ListNodeReport
-  {
-    /// This could be the name of the library or crate.
-    pub name : String,
-    /// Ihe version of the crate.
-    pub version : Option< String >,
-    /// The path to the node's source files in the local filesystem. This is
-    /// optional as not all nodes may have a local presence (e.g., nodes representing remote crates).
-    pub path : Option< PathBuf >,
-    /// This field is a flag indicating whether the Node is a duplicate or not.
-    pub duplicate : bool,
-    /// A list that stores normal dependencies.
-    /// Each element in the list is also of the same 'ListNodeReport' type to allow
-    /// storage of nested dependencies.
-    pub normal_dependencies : Vec< ListNodeReport >,
-    /// A list that stores dev dependencies(dependencies required for tests or examples).
-    /// Each element in the list is also of the same 'ListNodeReport' type to allow
-    /// storage of nested dependencies.
-    pub dev_dependencies : Vec< ListNodeReport >,
-    /// A list that stores build dependencies.
-    /// Each element in the list is also of the same 'ListNodeReport' type to allow
-    /// storage of nested dependencies.
-    pub build_dependencies : Vec< ListNodeReport >,
+    info : collection::HashSet< PackageAdditionalInfo >,
+    dependency_sources : collection::HashSet< DependencySource >,
+    dependency_categories : collection::HashSet< DependencyCategory >,
   }
 
-  impl ListNodeReport
-  {
-    /// Displays the name, version, path, and dependencies of a package with appropriate indentation and spacing.
-    ///
-    /// # Arguments
-    ///
-    /// * `spacer` - A string used for indentation.
-    ///
-    /// # Returns
-    ///
-    /// * A `Result` containing the formatted string or a `std::fmt::Error` if formatting fails.
-    pub fn display_with_spacer( &self, spacer : &str ) -> Result< String, std::fmt::Error >
-    {
-      let mut f = String::new();
-
-      write!( f, "{}", self.name )?;
-      if let Some( version ) = &self.version { write!( f, " {version}" )? }
-      if let Some( path ) = &self.path { write!( f, " {}", path.display() )? }
-      if self.duplicate { write!( f, "(*)" )? }
-      write!( f, "\n" )?;
-
-      let mut new_spacer = format!( "{spacer}{}  ", if self.normal_dependencies.len() < 2 { " " } else { UTF8_SYMBOLS.down } );
-
-      let mut normal_dependencies_iter = self.normal_dependencies.iter();
-      let last = normal_dependencies_iter.next_back();
-
-      for dep in normal_dependencies_iter
-      {
-        write!( f, "{spacer}{}{} {}", UTF8_SYMBOLS.tee, UTF8_SYMBOLS.right, dep.display_with_spacer( &new_spacer )? )?;
-      }
-      if let Some( last ) = last
-      {
-        new_spacer = format!( "{spacer}   " );
-        write!( f, "{spacer}{}{} {}", UTF8_SYMBOLS.ell, UTF8_SYMBOLS.right, last.display_with_spacer( &new_spacer )? )?;
-      }
-      if !self.dev_dependencies.is_empty()
-      {
-        let mut dev_dependencies_iter = self.dev_dependencies.iter();
-        let last = dev_dependencies_iter.next_back();
-        write!( f, "{spacer}[dev-dependencies]\n" )?;
-        for dep in dev_dependencies_iter
-        {
-          write!( f, "{spacer}{}{} {}", UTF8_SYMBOLS.tee, UTF8_SYMBOLS.right, dep.display_with_spacer( &new_spacer )? )?;
-        }
-        // unwrap - safe because `is_empty` check
-        write!( f, "{spacer}{}{} {}", UTF8_SYMBOLS.ell, UTF8_SYMBOLS.right, last.unwrap().display_with_spacer( &new_spacer )? )?;
-      }
-      if !self.build_dependencies.is_empty()
-      {
-        let mut build_dependencies_iter = self.build_dependencies.iter();
-        let last = build_dependencies_iter.next_back();
-        write!( f, "{spacer}[build-dependencies]\n" )?;
-        for dep in build_dependencies_iter
-        {
-          write!( f, "{spacer}{}{} {}", UTF8_SYMBOLS.tee, UTF8_SYMBOLS.right, dep.display_with_spacer( &new_spacer )? )?;
-        }
-        // unwrap - safe because `is_empty` check
-        write!( f, "{spacer}{}{} {}", UTF8_SYMBOLS.ell, UTF8_SYMBOLS.right, last.unwrap().display_with_spacer( &new_spacer )? )?;
-      }
-
-      Ok( f )
-    }
-  }
-
-  impl std::fmt::Display for ListNodeReport
-  {
-    fn fmt( &self, f : &mut Formatter< '_ > ) -> std::fmt::Result
-    {
-      write!( f, "{}", self.display_with_spacer( "" )? )?;
-
-      Ok( () )
-    }
-  }
+  // struct Symbols
+  // {
+  //   down : &'static str,
+  //   tee : &'static str,
+  //   ell : &'static str,
+  //   right : &'static str,
+  // }
+
+  // // qqq : for Mykyta : make facade, abstract and move out tree printing. or reuse ready solution for tree printing
+  // // stick to single responsibility
+  // const UTF8_SYMBOLS : Symbols = Symbols
+  // {
+  //   down : "│",
+  //   tee  : "├",
+  //   ell  : "└",
+  //   right : "─",
+  // };
+
+  // /// Represents a node in a dependency graph.
+  // /// It holds essential information about the project dependencies. It is also capable
+  // /// of holding any nested dependencies in a recursive manner, allowing the modeling
+  // /// of complex dependency structures.
+  // #[ derive( Debug, Clone, Eq, PartialEq ) ]
+  // pub struct ListNodeReport
+  // {
+  //   /// This could be the name of the library or crate.
+  //   pub name : String,
+  //   /// Ihe version of the crate.
+  //   pub version : Option< String >,
+  //   /// The path to the node's source files in the local filesystem. This is
+  //   /// optional as not all nodes may have a local presence (e.g., nodes representing remote crates).
+  //   pub crate_dir : Option< CrateDir >,
+  //   /// This field is a flag indicating whether the Node is a duplicate or not.
+  //   pub duplicate : bool,
+  //   /// A list that stores normal dependencies.
+  //   /// Each element in the list is also of the same 'ListNodeReport' type to allow
+  //   /// storage of nested dependencies.
+  //   pub normal_dependencies : Vec< ListNodeReport >,
+  //   /// A list that stores dev dependencies(dependencies required for tests or examples).
+  //   /// Each element in the list is also of the same 'ListNodeReport' type to allow
+  //   /// storage of nested dependencies.
+  //   pub dev_dependencies : Vec< ListNodeReport >,
+  //   /// A list that stores build dependencies.
+  //   /// Each element in the list is also of the same 'ListNodeReport' type to allow
+  //   /// storage of nested dependencies.
+  //   pub build_dependencies : Vec< ListNodeReport >,
+  // }
+
+  // impl ListNodeReport
+  // {
+  //   /// Displays the name, version, path, and dependencies of a package with appropriate indentation and spacing.
+  //   ///
+  //   /// # Arguments
+  //   ///
+  //   /// * `spacer` - A string used for indentation.
+  //   ///
+  //   /// # Returns
+  //   ///
+  //   /// * A `Result` containing the formatted string or a `std::fmt::Error` if formatting fails.
+  //   pub fn display_with_spacer( &self, spacer : &str ) -> Result< String, std::fmt::Error >
+  //   {
+  //     let mut f = String::new();
+
+  //     write!( f, "{}", self.name )?;
+  //     if let Some( version ) = &self.version { write!( f, " {version}" )? }
+  //     if let Some( crate_dir ) = &self.crate_dir { write!( f, " {}", crate_dir )? }
+  //     if self.duplicate { write!( f, "(*)" )? }
+  //     write!( f, "\n" )?;
+
+  //     let mut new_spacer = format!( "{spacer}{}  ", if self.normal_dependencies.len() < 2 { " " } else { UTF8_SYMBOLS.down } );
+  //     let mut normal_dependencies_iter = self.normal_dependencies.iter();
+  //     let last = normal_dependencies_iter.next_back();
+
+  //     for dep in normal_dependencies_iter
+  //     {
+  //       write!( f, "{spacer}{}{} {}", UTF8_SYMBOLS.tee, UTF8_SYMBOLS.right, dep.display_with_spacer( &new_spacer )? )?;
+  //     }
+  //     if let Some( last ) = last
+  //     {
+  //       new_spacer = format!( "{spacer}   " );
+  //       write!( f, "{spacer}{}{} {}", UTF8_SYMBOLS.ell, UTF8_SYMBOLS.right, last.display_with_spacer( &new_spacer )? )?;
+  //     }
+  //     if !self.dev_dependencies.is_empty()
+  //     {
+  //       let mut dev_dependencies_iter = self.dev_dependencies.iter();
+  //       let last = dev_dependencies_iter.next_back();
+  //       write!( f, "{spacer}[dev-dependencies]\n" )?;
+  //       for dep in dev_dependencies_iter
+  //       {
+  //         write!( f, "{spacer}{}{} {}", UTF8_SYMBOLS.tee, UTF8_SYMBOLS.right, dep.display_with_spacer( &new_spacer )? )?;
+  //       }
+  //       // unwrap - safe because `is_empty` check
+  //       write!( f, "{spacer}{}{} {}", UTF8_SYMBOLS.ell, UTF8_SYMBOLS.right, last.unwrap().display_with_spacer( &new_spacer )? )?;
+  //     }
+  //     if !self.build_dependencies.is_empty()
+  //     {
+  //       let mut build_dependencies_iter = self.build_dependencies.iter();
+  //       let last = build_dependencies_iter.next_back();
+  //       write!( f, "{spacer}[build-dependencies]\n" )?;
+  //       for dep in build_dependencies_iter
+  //       {
+  //         write!( f, "{spacer}{}{} {}", UTF8_SYMBOLS.tee, UTF8_SYMBOLS.right, dep.display_with_spacer( &new_spacer )? )?;
+  //       }
+  //       // unwrap - safe because `is_empty` check
+  //       write!( f, "{spacer}{}{} {}", UTF8_SYMBOLS.ell, UTF8_SYMBOLS.right, last.unwrap().display_with_spacer( &new_spacer )? )?;
+  //     }
+
+  //     Ok( f )
+  //   }
+  // }
+
+  // impl std::fmt::Display for ListNodeReport
+  // {
+  //   fn fmt( &self, f : &mut Formatter< '_ > ) -> std::fmt::Result
+  //   {
+  //     write!( f, "{}", self.display_with_spacer( "" )? )?;
+
+  //     Ok( () )
+  //   }
+  // }
 
   /// Represents the different report formats for the `list` action.
   #[ derive( Debug, Default, Clone ) ]
   pub enum ListReport
   {
     /// Represents a tree-like report format.
-    Tree( Vec< ListNodeReport > ),
+    Tree( Vec< tool::TreePrinter > ),
     /// Represents a standard list report format in topological order.
     List( Vec< String > ),
     /// Represents an empty report format.
@@ -289,42 +278,100 @@ mod private
     Empty,
   }
 
-  impl std::fmt::Display for ListReport
+  impl fmt::Display for ListReport
   {
-    fn fmt( &self, f : &mut Formatter< '_ > ) -> std::fmt::Result
+    fn fmt( &self, f : &mut fmt::Formatter< '_ > ) -> fmt::Result
     {
       match self
       {
-        Self::Tree( v ) => write!( f, "{}", v.iter().map( | l | l.to_string() ).collect::< Vec< _ > >().join( "\n" ) ),
-        Self::List( v ) => write!( f, "{}", v.iter().enumerate().map( |( i, v )| format!( "[{i}] {v}" ) ).collect::< Vec< _ > >().join( "\n" ) ),
+        Self::Tree( v ) =>
+        write!
+        (
+          f,
+          "{}",
+          v.iter().map( | l | l.to_string() ).collect::< Vec< _ > >().join( "\n" )
+        ),
+
+        Self::List( v ) =>
+        write!
+        (
+          f,
+          "{}",
+          v.iter().enumerate().map( |( i, v )| format!( "[{i}] {v}" ) ).collect::< Vec< _ > >().join( "\n" )
+        ),
+
         Self::Empty => write!( f, "Nothing" ),
       }
     }
   }
 
-  fn process_package_dependency
+  // aaa : for Bohdan : descirption // aaa : done
+  /// The `DependencyId` struct encapsulates the essential attributes of a dependency,
+  #[ derive( Debug, Clone, PartialEq, Eq, Hash ) ]
+  pub struct DependencyId
+  {
+    /// The name of the dependency.
+    ///
+    /// This is typically the name of the library or package that the package relies on.
+    pub name : String,
+    /// The version requirements for the dependency.
+    ///
+    /// Note: This will be compared to other dependencies and packages to build the tree
+    pub version : semver::VersionReq,
+    /// An optional path to the manifest file of the dependency.
+    ///
+    /// This field may contain a path to the manifest file when the dependency is a local package
+    /// or when specific path information is needed to locate the dependency's manifest.
+    pub path : Option< ManifestFile >,
+  }
+
+  fn process_package_dependency< 'a >
   (
     workspace : &Workspace,
-    package : &WorkspacePackage,
+    package : &WorkspacePackageRef< 'a >,
     args : &ListOptions,
-    dep_rep : &mut ListNodeReport,
-    visited : &mut HashSet< String >
+    dep_rep : &mut tool::ListNodeReport,
+    visited : &mut collection::HashSet< DependencyId >
   )
   {
-    for dependency in &package.dependencies()
+    for dependency in package.dependencies()
     {
-      if dependency.path().is_some() && !args.dependency_sources.contains( &DependencySource::Local ) { continue; }
-      if dependency.path().is_none() && !args.dependency_sources.contains( &DependencySource::Remote ) { continue; }
-      let dep_id = format!( "{}+{}+{}", dependency.name(), dependency.req(), dependency.path().as_ref().map( | p | p.join( "Cargo.toml" ) ).unwrap_or_default() );
 
-      let mut temp_vis = visited.clone();
-      let dependency_rep = process_dependency( workspace, dependency, args, &mut temp_vis );
+      // aaa : for Bohdan : bad : suboptimal
+      // aaa : Is that what you had in mind?
+      let dep_crate_dir = dependency.crate_dir();
+      if dep_crate_dir.is_some() && !args.dependency_sources.contains( &DependencySource::Local ) { continue; }
+      if dep_crate_dir.is_none() && !args.dependency_sources.contains( &DependencySource::Remote ) { continue; }
 
+      // aaa : extend test coverage. NewType. Description
+      // aaa : NewType ✅ Description ✅ test coverage ❌ how to test structure without logic?
+      // qqq : extend test coverage. NewType. Description
+      let dep_id = DependencyId
+      {
+        name : dependency.name(),
+        // unwrap should be safe because of `semver::VersionReq`
+        version : dependency.req(),
+        path : dependency.crate_dir().map( | p | p.manifest_file() ),
+      };
+      // format!( "{}+{}+{}", dependency.name(), dependency.req(), dependency.crate_dir().unwrap().manifest_file() );
+      // let dep_id = format!( "{}+{}+{}", dependency.name(), dependency.req(), dependency.path().as_ref().map( | p | p.join( "Cargo.toml" ) ).unwrap_or_default() );
+
+      let mut temp_vis = visited.clone();
+      let dependency_rep = process_dependency
+      (
+        workspace,
+        dependency,
+        args,
+        &mut temp_vis
+      );
       match dependency.kind()
       {
-        workspace::DependencyKind::Normal if args.dependency_categories.contains( &DependencyCategory::Primary ) => dep_rep.normal_dependencies.push( dependency_rep ),
-        workspace::DependencyKind::Development if args.dependency_categories.contains( &DependencyCategory::Dev ) => dep_rep.dev_dependencies.push( dependency_rep ),
-        workspace::DependencyKind::Build if args.dependency_categories.contains( &DependencyCategory::Build ) => dep_rep.build_dependencies.push( dependency_rep ),
+        DependencyKind::Normal if args.dependency_categories.contains( &DependencyCategory::Primary ) =>
+        dep_rep.normal_dependencies.push( dependency_rep ),
+        DependencyKind::Development if args.dependency_categories.contains( &DependencyCategory::Dev ) =>
+        dep_rep.dev_dependencies.push( dependency_rep ),
+        DependencyKind::Build if args.dependency_categories.contains( &DependencyCategory::Build ) =>
+        dep_rep.build_dependencies.push( dependency_rep ),
         _ => { visited.remove( &dep_id ); std::mem::swap( &mut temp_vis, visited ); }
       }
 
@@ -332,20 +379,35 @@ mod private
     }
   }
 
-  fn process_dependency( workspace : &Workspace, dep : &workspace::Dependency, args : &ListOptions, visited : &mut HashSet< String > ) -> ListNodeReport
+  fn process_dependency
+  (
+    workspace : &Workspace,
+    dep : DependencyRef< '_ >,
+    args : &ListOptions,
+    visited : &mut collection::HashSet< DependencyId >
+  )
+  -> tool::ListNodeReport
   {
-    let mut dep_rep = ListNodeReport
+    let mut dep_rep = tool::ListNodeReport
     {
       name : dep.name().clone(),
       version : if args.info.contains( &PackageAdditionalInfo::Version ) { Some( dep.req().to_string() ) } else { None },
-      path : if args.info.contains( &PackageAdditionalInfo::Path ) { dep.path().as_ref().map( | p | p.clone().into_std_path_buf() ) } else { None },
+      // manifest_file : if args.info.contains( &PackageAdditionalInfo::Path ) { dep.manifest_file().as_ref().map( | p | p.clone().into_std_path_buf() ) } else { None },
+      crate_dir : if args.info.contains( &PackageAdditionalInfo::Path ) { dep.crate_dir() } else { None },
       duplicate : false,
       normal_dependencies : vec![],
       dev_dependencies : vec![],
       build_dependencies : vec![],
     };
 
-    let dep_id = format!( "{}+{}+{}", dep.name(), dep.req(), dep.path().as_ref().map( | p | p.join( "Cargo.toml" ) ).unwrap_or_default() );
+    // let dep_id = format!( "{}+{}+{}", dep.name(), dep.req(), dep.crate_dir().as_ref().map( | p | p.join( "Cargo.toml" ) ).unwrap_or_default() );
+    let dep_id = DependencyId
+    {
+      name : dep.name(),
+      // unwrap should be safe because of `semver::VersionReq`
+      version : dep.req(),
+      path : dep.crate_dir().map( | p | p.manifest_file() ),
+    };
     // if this is a cycle (we have visited this node before)
     if visited.contains( &dep_id )
     {
@@ -356,9 +418,9 @@ mod private
 
     // if we have not visited this node before, mark it as visited
     visited.insert( dep_id );
-    if let Some( path ) = &dep.path()
+    if let Some( crate_dir ) = &dep.crate_dir()
     {
-      if let Some( package ) = workspace.package_find_by_manifest( path.as_std_path().join( "Cargo.toml" ) )
+      if let Some( package ) = workspace.package_find_by_manifest( crate_dir.clone().manifest_file() )
       {
         process_package_dependency( workspace, &package, args, &mut dep_rep, visited );
       }
@@ -367,19 +429,6 @@ mod private
     dep_rep
   }
 
-  trait ErrWith< T, T1, E >
-  {
-    fn err_with( self, v : T ) -> std::result::Result< T1, ( T, E ) >;
-  }
-
-  impl< T, T1, E > ErrWith< T, T1, E > for Result< T1, E >
-  {
-    fn err_with( self, v : T ) -> Result< T1, ( T, E ) >
-    {
-      self.map_err( | e | ( v, e ) )
-    }
-  }
-
   /// Retrieve a list of packages based on the given arguments.
   ///
   /// # Arguments
@@ -391,106 +440,177 @@ mod private
   /// - `Result<ListReport, (ListReport, Error)>` - A result containing the list report if successful,
   ///   or a tuple containing the list report and error if not successful.
   #[ cfg_attr( feature = "tracing", tracing::instrument ) ]
-  pub fn list( args : ListOptions ) -> Result< ListReport, ( ListReport, Error ) >
+  pub fn list( args : ListOptions ) -> ResultWithReport< ListReport, untyped::Error > // qqq : should be specific error
   {
     let mut report = ListReport::default();
 
-    let manifest = manifest::open( args.path_to_manifest.absolute_path() ).context( "List of packages by specified manifest path" ).err_with( report.clone() )?;
-    let metadata = Workspace::with_crate_dir( manifest.crate_dir() ).err_with( report.clone() )?;
+    // let manifest = Manifest::try_from( args.path_to_manifest.absolute_path() )
+    dbg!( &args.path_to_manifest );
+    let manifest = Manifest::try_from( args.path_to_manifest.clone() )
+    .context( "List of packages by specified manifest path" )
+    .err_with( || report.clone() )?;
 
-    let is_package = manifest.package_is().context( "try to identify manifest type" ).err_with( report.clone() )?;
+    let workspace = Workspace::try_from( manifest.crate_dir() )
+    .context( "Reading workspace" )
+    .err_with( || report.clone() )?;
 
-    let tree_package_report = | path : AbsolutePath, report : &mut ListReport, visited : &mut HashSet< String > |
+    let is_package = manifest.package_is();
+    // let is_package = manifest.package_is().context( "try to identify manifest type" ).err_with( report.clone() )?;
+
+    let tree_package_report =
+    | manifest_file : ManifestFile, report : &mut ListReport, visited : &mut HashSet< DependencyId > |
     {
-      let package = metadata.package_find_by_manifest( path ).unwrap();
-      let mut package_report = ListNodeReport
+
+      // aaa : is it safe to use unwrap here? // aaa : done
+      let package = workspace
+      .package_find_by_manifest( manifest_file )
+      .ok_or_else( || format_err!( "Package not found in the workspace" ) )
+      .err_with( || report.clone() )?;
+      let mut package_report = tool::ListNodeReport
       {
         name : package.name().to_string(),
         version : if args.info.contains( &PackageAdditionalInfo::Version ) { Some( package.version().to_string() ) } else { None },
-        path : if args.info.contains( &PackageAdditionalInfo::Path ) { Some( package.manifest_path().as_std_path().to_path_buf() ) } else { None },
+        crate_dir : if args.info.contains( &PackageAdditionalInfo::Path )
+        { Some( package.crate_dir() ).transpose() }
+        else
+        { Ok( None ) }
+        .err_with( || report.clone() )?,
+        // aaa : is it safe to use unwrap here? // aaa : now returns an error
         duplicate : false,
         normal_dependencies : vec![],
         dev_dependencies : vec![],
         build_dependencies : vec![],
       };
 
-      process_package_dependency( &metadata, &package, &args, &mut package_report, visited );
+      process_package_dependency( &workspace, &package, &args, &mut package_report, visited );
 
+      let printer = TreePrinter::new( &package_report );
       *report = match report
       {
-        ListReport::Tree( ref mut v ) => ListReport::Tree( { v.extend([ package_report ]); v.clone() } ),
-        ListReport::Empty => ListReport::Tree( vec![ package_report ] ),
+        ListReport::Tree( ref mut v ) => ListReport::Tree
+        ( { v.extend([ printer ]); v.clone() } ),
+        ListReport::Empty => ListReport::Tree( vec![ printer ] ),
         ListReport::List( _ ) => unreachable!(),
       };
+      Ok( () )
     };
+
     match args.format
     {
       ListFormat::Tree if is_package =>
       {
-        let mut visited = HashSet::new();
-        tree_package_report( manifest.manifest_path, &mut report, &mut visited );
+        let mut visited = collection::HashSet::new();
+        tree_package_report( manifest.manifest_file, &mut report, &mut visited )?;
         let ListReport::Tree( tree ) = report else { unreachable!() };
-        let tree = rearrange_duplicates( merge_dev_dependencies( merge_build_dependencies( tree ) ) );
+        let printer = merge_build_dependencies( tree );
+        let rep : Vec< ListNodeReport > = printer
+        .iter()
+        .map( | printer | printer.info.clone() )
+        .collect();
+        let tree = rearrange_duplicates( rep );
         report = ListReport::Tree( tree );
       }
       ListFormat::Tree =>
       {
-        let packages = metadata.packages().context( "workspace packages" ).err_with( report.clone() )?;
-        let mut visited = packages.iter().map( | p | format!( "{}+{}+{}", p.name(), p.version().to_string(), p.manifest_path() ) ).collect();
+        let packages = workspace.packages();
+        let mut visited = packages
+        .clone()
+        .map
+        (
+          // aaa : is it safe to use unwrap here
+          // unwrap is safe because Version has less information than VersionReq
+          | p |
+          DependencyId
+          {
+            name : p.name().into(),
+            version : semver::VersionReq::parse( &p.version().to_string() ).unwrap(),
+            path : p.manifest_file().ok()
+          }
+        )
+        .collect();
         for package in packages
         {
-          tree_package_report( package.manifest_path().as_std_path().try_into().unwrap(), &mut report, &mut visited )
+          tree_package_report( package.manifest_file().unwrap(), &mut report, &mut visited )?
         }
         let ListReport::Tree( tree ) = report else { unreachable!() };
-        let tree = merge_dev_dependencies( merge_build_dependencies( tree ) );
+        let printer = merge_build_dependencies( tree );
+        let rep : Vec< ListNodeReport > = printer
+        .iter()
+        .map( | printer | printer.info.clone() )
+        .collect();
+        let tree = merge_dev_dependencies( rep );
         report = ListReport::Tree( tree );
       }
       ListFormat::Topological =>
       {
-        let root_crate = manifest
-        .manifest_data
-        .as_ref()
-        .and_then( | m | m.get( "package" ) )
+
+        let root_crate = manifest.data.get( "package" )
         .map( | m | m[ "name" ].to_string().trim().replace( '\"', "" ) )
         .unwrap_or_default();
 
-        let dep_filter = move | _p : &WorkspacePackage, d : &workspace::Dependency |
+        // let root_crate = manifest
+        // .data
+        // // .as_ref()
+        // .and_then( | m | m.get( "package" ) )
+        // .map( | m | m[ "name" ].to_string().trim().replace( '\"', "" ) )
+        // .unwrap_or_default();
+
+        let dep_filter = move | _p : WorkspacePackageRef< '_ >, d : DependencyRef< '_ > |
         {
           (
-            args.dependency_categories.contains( &DependencyCategory::Primary ) && d.kind() == workspace::DependencyKind::Normal
-            || args.dependency_categories.contains( &DependencyCategory::Dev ) && d.kind() == workspace::DependencyKind::Development
-            || args.dependency_categories.contains( &DependencyCategory::Build ) && d.kind() == workspace::DependencyKind::Build
+            args.dependency_categories.contains( &DependencyCategory::Primary ) && d.kind() == DependencyKind::Normal
+            || args.dependency_categories.contains( &DependencyCategory::Dev ) && d.kind() == DependencyKind::Development
+            || args.dependency_categories.contains( &DependencyCategory::Build ) && d.kind() == DependencyKind::Build
           )
           &&
           (
-            args.dependency_sources.contains( &DependencySource::Remote ) && d.path().is_none()
-            || args.dependency_sources.contains( &DependencySource::Local ) && d.path().is_some()
+            args.dependency_sources.contains( &DependencySource::Remote ) && d.crate_dir().is_none()
+            || args.dependency_sources.contains( &DependencySource::Local ) && d.crate_dir().is_some()
           )
         };
 
-        let packages = metadata.packages().context( "workspace packages" ).err_with( report.clone() )?;
-        let packages_map =  packages::filter
+        let packages = workspace.packages();
+        let packages_map : collection::HashMap< package::PackageName, collection::HashSet< package::PackageName > > = packages::filter
         (
-          packages.as_slice(),
-          FilterMapOptions { dependency_filter : Some( Box::new( dep_filter ) ), ..Default::default() }
+          packages.clone(),
+          packages::FilterMapOptions
+          {
+            dependency_filter : Some( Box::new( dep_filter ) ),
+            ..Default::default()
+          }
         );
 
         let graph = graph::construct( &packages_map );
 
-        let sorted = toposort( &graph, None ).map_err( | e | { use std::ops::Index; ( report.clone(), err!( "Failed to process toposort for package : {:?}", graph.index( e.node_id() ) ) ) } )?;
-        let packages_info = packages.iter().map( | p | ( p.name().clone(), p ) ).collect::< HashMap< _, _ > >();
+        let sorted = toposort( &graph, None )
+        .map_err
+        (
+          | e |
+          {
+            use std::ops::Index;
+            format_err!
+            (
+              "Failed to process toposort for package : {:?}",
+              graph.index( e.node_id() )
+            )
+          }
+        )
+        .err_with( || report.clone() )?;
+        let packages_info : collection::HashMap< String, WorkspacePackageRef< '_ > > =
+          packages.map( | p | ( p.name().to_string(), p ) ).collect();
 
         if root_crate.is_empty()
         {
-          let names = sorted
-          .iter()
+          let names : Vec< String > = sorted
+          .into_iter()
           .rev()
-          .map( | dep_idx | graph.node_weight( *dep_idx ).unwrap().to_string() )
+          .map( | dep_idx | graph.node_weight( dep_idx ).unwrap() )
           .map
           (
-            | mut name |
+            | name : &&package::PackageName |
             {
-              if let Some( p ) = packages_info.get( &name )
+              let mut name : String = name.to_string();
+              if let Some( p ) = packages_info.get( &name[ .. ] )
               {
                 if args.info.contains( &PackageAdditionalInfo::Version )
                 {
@@ -500,22 +620,27 @@ mod private
                 if args.info.contains( &PackageAdditionalInfo::Path )
                 {
                   name.push_str( " " );
-                  name.push_str( &p.manifest_path().to_string() );
+                  name.push_str( &p.manifest_file()?.to_string() );
+                  // aaa : is it safe to use unwrap here? // aaa : should be safe, but now returns an error
                 }
               }
-              name
+              Ok::< String, PathError >( name )
             }
           )
-          .collect::< Vec< String > >();
+          .collect::< Result< _, _ >>()
+          .err_with( || report.clone() )?;
 
           report = ListReport::List( names );
         }
         else
         {
-          let node = graph.node_indices().find( | n | graph.node_weight( *n ).unwrap() == &&root_crate ).unwrap();
+          let node = graph
+          .node_indices()
+          .find( | n | graph.node_weight( *n ).unwrap().as_str() == root_crate )
+          .unwrap();
           let mut dfs = Dfs::new( &graph, node );
           let mut subgraph = Graph::new();
-          let mut node_map = HashMap::new();
+          let mut node_map = collection::HashMap::new();
           while let Some( n )= dfs.next( &graph )
           {
             node_map.insert( n, subgraph.add_node( graph[ n ] ) );
@@ -523,7 +648,11 @@ mod private
 
           for e in graph.edge_references()
           {
-            if let ( Some( &s ), Some( &t ) ) = ( node_map.get( &e.source() ), node_map.get( &e.target() ) )
+            if let ( Some( &s ), Some( &t ) ) =
+            (
+              node_map.get( &e.source() ),
+              node_map.get( &e.target() )
+            )
             {
               subgraph.add_edge( s, t, () );
             }
@@ -533,8 +662,8 @@ mod private
           let mut names = Vec::new();
           while let Some( n ) = topo.next( &subgraph )
           {
-            let mut name = subgraph[ n ].clone();
-            if let Some( p ) = packages_info.get( &name )
+            let mut name : String = subgraph[ n ].to_string();
+            if let Some( p ) = packages_info.get( &name[ .. ] )
             {
               if args.info.contains( &PackageAdditionalInfo::Version )
               {
@@ -544,7 +673,7 @@ mod private
               if args.info.contains( &PackageAdditionalInfo::Path )
               {
                 name.push_str( " " );
-                name.push_str( &p.manifest_path().to_string() );
+                name.push_str( &p.manifest_file().unwrap().to_string() );
               }
             }
             names.push( name );
@@ -559,26 +688,35 @@ mod private
     Ok( report )
   }
 
-  fn merge_build_dependencies( mut report: Vec< ListNodeReport > ) -> Vec< ListNodeReport >
+  fn merge_build_dependencies( mut report: Vec< tool::TreePrinter > ) -> Vec< tool::TreePrinter >
   {
     let mut build_dependencies = vec![];
     for node_report in &mut report
     {
-      build_dependencies = merge_build_dependencies_impl( node_report, build_dependencies );
+      build_dependencies = merge_build_dependencies_impl
+      (
+        &mut node_report.info,
+        build_dependencies
+      );
     }
     if let Some( last_report ) = report.last_mut()
     {
-      last_report.build_dependencies = build_dependencies;
+      last_report.info.build_dependencies = build_dependencies;
     }
 
     report
   }
-  
-  fn merge_build_dependencies_impl( report : &mut ListNodeReport, mut build_deps_acc : Vec< ListNodeReport > ) -> Vec< ListNodeReport >
+
+  fn merge_build_dependencies_impl
+  (
+    report : &mut tool::ListNodeReport,
+    mut build_deps_acc : Vec< tool::ListNodeReport >
+  )
+  -> Vec< tool::ListNodeReport >
   {
     for dep in report.normal_dependencies.iter_mut()
-      .chain( report.dev_dependencies.iter_mut() )
-      .chain( report.build_dependencies.iter_mut() )
+    .chain( report.dev_dependencies.iter_mut() )
+    .chain( report.build_dependencies.iter_mut() )
     {
       build_deps_acc = merge_build_dependencies_impl(dep, build_deps_acc );
     }
@@ -593,8 +731,8 @@ mod private
 
     build_deps_acc
   }
-  
-  fn merge_dev_dependencies( mut report: Vec< ListNodeReport > ) -> Vec< ListNodeReport >
+
+  fn merge_dev_dependencies( mut report : Vec< tool::ListNodeReport > ) -> Vec< tool::TreePrinter >
   {
     let mut dev_dependencies = vec![];
     for node_report in &mut report
@@ -605,11 +743,18 @@ mod private
     {
       last_report.dev_dependencies = dev_dependencies;
     }
-
-    report
+    let printer : Vec< TreePrinter > = report
+    .iter()
+    .map( | rep | TreePrinter::new( rep ) )
+    .collect();
+    printer
   }
 
-  fn merge_dev_dependencies_impl( report : &mut ListNodeReport, mut dev_deps_acc : Vec< ListNodeReport > ) -> Vec< ListNodeReport >
+  fn merge_dev_dependencies_impl
+  (
+    report : &mut ListNodeReport,
+    mut dev_deps_acc : Vec< ListNodeReport >
+  ) -> Vec< ListNodeReport >
   {
     for dep in report.normal_dependencies.iter_mut()
     .chain( report.dev_dependencies.iter_mut() )
@@ -628,27 +773,41 @@ mod private
 
     dev_deps_acc
   }
-  
-  fn rearrange_duplicates( mut report : Vec< ListNodeReport > ) -> Vec< ListNodeReport >
+
+  fn rearrange_duplicates( mut report : Vec< tool::ListNodeReport > ) -> Vec< tool::TreePrinter >
   {
-    let mut required_normal : HashMap< usize, Vec< ListNodeReport > > = HashMap::new();
+    let mut required_normal : collection::HashMap< usize, Vec< tool::ListNodeReport > > = collection::HashMap::new();
     for i in 0 .. report.len()
     {
-      let ( required, exist ) : ( Vec< _ >, Vec< _ > ) = std::mem::take( &mut report[ i ].normal_dependencies ).into_iter().partition( | d | d.duplicate );
+      let ( required, exist ) : ( Vec< _ >, Vec< _ > ) = std::mem::take
+      (
+        &mut report[ i ].normal_dependencies
+      )
+      .into_iter()
+      .partition( | d | d.duplicate );
       report[ i ].normal_dependencies = exist;
       required_normal.insert( i, required );
     }
-    
+
     rearrange_duplicates_resolver( &mut report, &mut required_normal );
     for ( i, deps ) in required_normal
     {
       report[ i ].normal_dependencies.extend( deps );
     }
-    
-    report
+
+    let printer : Vec< TreePrinter > = report
+    .iter()
+    .map( | rep | TreePrinter::new( rep ) )
+    .collect();
+
+    printer
   }
-  
-  fn rearrange_duplicates_resolver( report : &mut [ ListNodeReport ], required : &mut HashMap< usize, Vec< ListNodeReport > > )
+
+  fn rearrange_duplicates_resolver
+  (
+    report : &mut [ ListNodeReport ],
+    required : &mut HashMap< usize, Vec< ListNodeReport > >
+  )
   {
     for node in report
     {
@@ -659,7 +818,11 @@ mod private
       if !node.duplicate
       {
         if let Some( r ) = required.iter_mut().flat_map( |( _, v )| v )
-        .find( | r | r.name == node.name && r.version == node.version && r.path == node.path )
+        .find
+        (
+          | r |
+          r.name == node.name && r.version == node.version && r.crate_dir == node.crate_dir
+        )
         {
           std::mem::swap( r, node );
         }
@@ -687,7 +850,7 @@ crate::mod_interface!
   /// Contains output of the action.
   protected use ListReport;
   /// Contains output of a single node of the action.
-  protected use ListNodeReport;
+  // protected use ListNodeReport;
   /// List packages in workspace.
   orphan use list;
 }
diff --git a/module/move/willbe/src/action/main_header.rs b/module/move/willbe/src/action/main_header.rs
index e1b5a7a16e..1f4359961a 100644
--- a/module/move/willbe/src/action/main_header.rs
+++ b/module/move/willbe/src/action/main_header.rs
@@ -15,37 +15,33 @@ mod private
   };
   use std::path::PathBuf;
   use regex::Regex;
-  use wca::wtools::anyhow::Error;
-  use action::readme_health_table_renew::
+  use { CrateDir, query, url, Workspace };
+  use entity::{ PathError, WorkspaceInitError };
+  use error::
   {
-    readme_path,
-    workspace_root
-  };
-  use _path::AbsolutePath;
-  use { CrateDir, query, url, Workspace, wtools };
-  use entity::{ CrateDirError, WorkspaceError };
-  use wtools::error::
-  {
-    anyhow::format_err,
     err,
-    for_app::
+    Result,
+    untyped::
     {
-      Result,
-      Error as wError,
+      Error,
       Context,
     },
   };
-  use error_tools::
-  {
-    dependency::*,
-    for_lib::Error,
-  };
-  
+  use workspace_md_extension::WorkspaceMdExtension;
+  // use error::ErrWith;
+
   static TAGS_TEMPLATE : std::sync::OnceLock< Regex > = std::sync::OnceLock::new();
 
   fn regexes_initialize()
   {
-    TAGS_TEMPLATE.set( Regex::new( r"<!--\{ generate\.main_header\.start(\(\)|\{\}|\(.*?\)|\{.*?\}) \}-->(.|\n|\r\n)+<!--\{ generate\.main_header\.end \}-->" ).unwrap() ).ok();
+    TAGS_TEMPLATE.set
+    (
+      Regex::new
+      (
+        r"<!--\{ generate\.main_header\.start(\(\)|\{\}|\(.*?\)|\{.*?\}) \}-->(.|\n|\r\n)+<!--\{ generate\.main_header\.end \}-->"
+      )
+      .unwrap()
+    ).ok();
   }
 
   /// Report.
@@ -67,14 +63,17 @@ mod private
         {
           writeln!( f, "File successful changed : {file_path}." )?;
         }
-        else 
+        else
         {
           writeln!( f, "File successful changed but contains non-UTF-8 characters." )?;
         }
       }
-      else 
+      else
       {
-        if let Some( Some( file_path ) ) = self.found_file.as_ref().map( | p | p.to_str() )
+        if let Some( Some( file_path ) ) = self
+        .found_file
+        .as_ref()
+        .map( | p | p.to_str() )
         {
           writeln!( f, "File found but not changed : {file_path}." )?;
         }
@@ -87,17 +86,23 @@ mod private
     }
   }
 
-  #[ derive( Debug, Error ) ]
+  /// The `MainHeaderRenewError` enum represents the various errors that can occur during
+  /// the renewal of the main header.
+  #[ derive( Debug, error::Error ) ]
   pub enum MainHeaderRenewError
   {
+    /// Represents a common error.
     #[ error( "Common error: {0}" ) ]
-    Common(#[ from ] wError ),
+    Common(#[ from ] Error ),
+    /// Represents an I/O error.
     #[ error( "I/O error: {0}" ) ]
     IO( #[ from ] std::io::Error ),
+    /// Represents an error related to workspace initialization.
     #[ error( "Workspace error: {0}" ) ]
-    Workspace( #[ from ] WorkspaceError),
+    Workspace( #[ from ] WorkspaceInitError ),
+    /// Represents an error related to directory paths.
     #[ error( "Directory error: {0}" ) ]
-    Directory( #[ from ] CrateDirError ),
+    Directory( #[ from ] PathError ),
   }
 
   /// The `HeaderParameters` structure represents a set of parameters, used for creating url for header.
@@ -112,12 +117,22 @@ mod private
   impl HeaderParameters
   {
     /// Create `HeaderParameters` instance from the folder where Cargo.toml is stored.
-    fn from_cargo_toml( workspace : Workspace ) -> Result< Self, MainHeaderRenewError >
+    fn from_cargo_toml( workspace : &Workspace ) -> Result< Self, MainHeaderRenewError >
     {
-      let repository_url = workspace.repository_url()?.ok_or_else::< Error, _ >( || err!( "repo_url not found in workspace Cargo.toml" ) )?;
-      let master_branch = workspace.master_branch()?.unwrap_or( "master".into() );
-      let workspace_name = workspace.workspace_name()?.ok_or_else::< Error, _ >( || err!( "workspace_name not found in workspace Cargo.toml" ) )?;
-      let discord_url = workspace.discord_url()?;
+      // aaa : for Petro : too long lines, review all files
+      // aaa : done
+      let repository_url = workspace
+      .repository_url()
+      .ok_or_else::< Error, _ >
+      ( || err!( "repo_url not found in workspace Cargo.toml" ) )?;
+
+      let master_branch = workspace.master_branch().unwrap_or( "master".into() );
+      let workspace_name = workspace
+      .workspace_name()
+      .ok_or_else::< Error, _ >
+      ( || err!( "workspace_name not found in workspace Cargo.toml" ) )?;
+
+      let discord_url = workspace.discord_url();
 
       Ok
       (
@@ -134,8 +149,15 @@ mod private
     /// Convert `Self`to header.
     fn to_header( self ) -> Result< String, MainHeaderRenewError >
     {
-      let discord = self.discord_url.map( | discord |
-        format!( "\n[![discord](https://img.shields.io/discord/872391416519737405?color=eee&logo=discord&logoColor=eee&label=ask)]({discord})" )
+      let discord = self.discord_url
+      .map
+      (
+        | discord |
+        format!
+        (
+          "\n[![discord](https://img.shields.io/discord/872391416519737405?color=eee&logo=discord&logoColor=eee&label=ask)]({})",
+          discord
+        )
       )
       .unwrap_or_default();
 
@@ -178,40 +200,40 @@ mod private
   /// [![docs.rs](https://raster.shields.io/static/v1?label=docs&message=online&color=eee&logo=docsdotrs&logoColor=eee)](https://docs.rs/wtools)
   /// <!--{ generate.main_header.end }-->
   /// ```
-  pub fn readme_header_renew( path : AbsolutePath ) -> Result< MainHeaderRenewReport, ( MainHeaderRenewReport, MainHeaderRenewError ) >
+  pub fn readme_header_renew( crate_dir : CrateDir )
+  -> Result< MainHeaderRenewReport, ( MainHeaderRenewReport, MainHeaderRenewError ) >
   {
     let mut report = MainHeaderRenewReport::default();
     regexes_initialize();
 
-    let mut cargo_metadata = Workspace::with_crate_dir
-    ( 
-      CrateDir::try_from( path )
-      .map_err( | e | ( report.clone(), e.into() ) )? 
-    ).map_err( | e | ( report.clone(), e.into() ) )?;
-    
-    let workspace_root = workspace_root( &mut cargo_metadata )
-    .map_err( | e | ( report.clone(), e.into() ) )?;
-    
-    let header_param = HeaderParameters::from_cargo_toml( cargo_metadata )
-    .map_err( | e | ( report.clone(), e.into() ) )?;
-    
+    let workspace = Workspace::try_from
+    (
+      crate_dir
+    )
+    .err_with( || report.clone() )?;
+
+    let workspace_root = workspace
+    .workspace_root();
+
+    let header_param = HeaderParameters::from_cargo_toml( &workspace )
+    .err_with( || report.clone() )?;
+
     let read_me_path = workspace_root.join
-    ( 
-      readme_path( &workspace_root )
-      .ok_or_else( || format_err!( "Fail to find README.md" ) )
-      .map_err( | e | ( report.clone(), e.into() ) )?
+    (
+      repository::readme_path( &workspace_root )
+      .err_with( || report.clone() )?
     );
-    
-    report.found_file = Some( read_me_path.clone() );
-    
+
+    report.found_file = Some( read_me_path.clone().to_path_buf() );
+
     let mut file = OpenOptions::new()
     .read( true )
     .write( true )
     .open( &read_me_path )
-    .map_err( | e | ( report.clone(), e.into() ) )?;
+    .err_with( || report.clone() )?;
 
     let mut content = String::new();
-    file.read_to_string( &mut content ).map_err( | e | ( report.clone(), e.into() ) )?;
+    file.read_to_string( &mut content ).err_with( || report.clone() )?;
 
     let raw_params = TAGS_TEMPLATE
     .get()
@@ -223,17 +245,22 @@ mod private
 
     _ = query::parse( raw_params ).context( "Fail to parse arguments" );
 
-    let header = header_param.to_header().map_err( | e | ( report.clone(), e.into() ) )?;
+    let header = header_param.to_header().err_with( || report.clone() )?;
     let content : String = TAGS_TEMPLATE.get().unwrap().replace
-    ( 
-      &content, 
-      &format!( "<!--{{ generate.main_header.start{raw_params} }}-->\n{header}\n<!--{{ generate.main_header.end }}-->" ) 
+    (
+      &content,
+      &format!
+      (
+        "<!--{{ generate.main_header.start{} }}-->\n{}\n<!--{{ generate.main_header.end }}-->",
+        raw_params,
+        header,
+      )
     ).into();
-    
-    file.set_len( 0 ).map_err( | e | ( report.clone(), e.into() ) )?;
-    file.seek( SeekFrom::Start( 0 ) ).map_err( | e | ( report.clone(), e.into() ) )?;
-    file.write_all( content.as_bytes() ).map_err( | e | ( report.clone(), e.into() ) )?;
-    report.touched_file = read_me_path;
+
+    file.set_len( 0 ).err_with( || report.clone() )?;
+    file.seek( SeekFrom::Start( 0 ) ).err_with( || report.clone() )?;
+    file.write_all( content.as_bytes() ).err_with( || report.clone() )?;
+    report.touched_file = read_me_path.to_path_buf();
     report.success = true;
     Ok( report )
   }
@@ -245,4 +272,6 @@ crate::mod_interface!
   orphan use readme_header_renew;
   /// Report.
   orphan use MainHeaderRenewReport;
+  /// Error.
+  orphan use MainHeaderRenewError;
 }
\ No newline at end of file
diff --git a/module/move/willbe/src/action/mod.rs b/module/move/willbe/src/action/mod.rs
index 0c66bb41ce..728271c2a5 100644
--- a/module/move/willbe/src/action/mod.rs
+++ b/module/move/willbe/src/action/mod.rs
@@ -11,8 +11,6 @@ crate::mod_interface!
   /// Return the differences between a local and remote package versions.
   layer publish_diff;
   /// Generates health table in main Readme.md file of workspace.
-  // aaa : for Petro : give high quality explanations
-  // aaa : add more details to description
   layer readme_health_table_renew;
   /// Module headers.
   layer readme_modules_headers_renew;
diff --git a/module/move/willbe/src/action/publish.rs b/module/move/willbe/src/action/publish.rs
index c426e01fd3..a0b6aa0675 100644
--- a/module/move/willbe/src/action/publish.rs
+++ b/module/move/willbe/src/action/publish.rs
@@ -3,15 +3,21 @@ mod private
 {
   use crate::*;
 
-  use std::collections::{ HashSet, HashMap };
-  use core::fmt::Formatter;
-  use std::{ env, fs };
+  use std::{ env, fmt, fs };
+  use
+  {
+    error::untyped,
+    error::ErrWith,
+  };
+
+//   use collection::{ HashSet, HashMap };
+//   use core::fmt::Formatter;
+//   use std::{ env, fs };
 
-  use wtools::error::for_app::{ Error, anyhow };
-  use _path::AbsolutePath;
-  use workspace::Workspace;
-  use package::Package;
-  use channel::Channel;
+//   use error::untyped::Error;
+//   use workspace::Workspace;
+//   use package::Package;
+//   use channel::Channel;
 
   /// Represents a report of publishing packages
   #[ derive( Debug, Default, Clone ) ]
@@ -19,14 +25,14 @@ mod private
   {
     /// Represents the absolute path to the root directory of the workspace.
     pub workspace_root_dir : Option< AbsolutePath >,
-    pub plan : Option< package::PublishPlan >,
+    pub plan : Option< publish::PublishPlan >,
     /// Represents a collection of packages and their associated publishing reports.
-    pub packages : Vec<( AbsolutePath, package::PublishReport )>
+    pub packages : Vec<( AbsolutePath, publish::PublishReport )>
   }
 
-  impl std::fmt::Display for PublishReport
+  impl fmt::Display for PublishReport
   {
-    fn fmt( &self, f : &mut Formatter< '_ > ) -> std::fmt::Result
+    fn fmt( &self, f : &mut fmt::Formatter< '_ > ) -> fmt::Result
     {
       if self.packages.is_empty()
       {
@@ -52,12 +58,20 @@ mod private
       {
         if !plan.dry
         {
-          let expected_to_publish = plan
+          let expected_to_publish : Vec< _ > = plan
           .plans
           .iter()
-          .map( | p | ( p.version_bump.crate_dir.absolute_path(), p.package_name.clone(), p.version_bump.clone() ) )
-          .collect::< Vec< _ > >();
-          let mut actually_published = self.packages.iter()
+          .map
+          (
+            | p |
+            (
+              p.bump.crate_dir.clone().absolute_path(),
+              p.package_name.clone(),
+              p.bump.clone()
+            )
+          )
+          .collect();
+          let mut actually_published : Vec< _ > = self.packages.iter()
           .filter_map
           (
             |( path, repo )|
@@ -70,12 +84,14 @@ mod private
               None
             }
           )
-          .collect::< Vec< _ > >();
+          .collect();
 
           writeln!( f, "Status :" )?;
-          for ( path, name, version )  in expected_to_publish
+          for ( path, name, version ) in expected_to_publish
           {
-            if let Some( pos ) = actually_published.iter().position( | p | p == &path )
+            if let Some( pos ) = actually_published
+            .iter()
+            .position( | p | p == &path )
             {
               writeln!( f, "✅ {name} {}", version.new_version )?;
               // want to check that only expected packages actually published
@@ -108,45 +124,74 @@ mod private
   /// # Returns
   /// A Result containing a `PublishPlan` if successful, or an `Error` otherwise.
   #[ cfg_attr( feature = "tracing", tracing::instrument ) ]
-  pub fn publish_plan( patterns : Vec< String >, channel : Channel, dry : bool, temp : bool  ) -> Result< package::PublishPlan, Error >
+  pub fn publish_plan
+  (
+    patterns : Vec< String >,
+    channel : channel::Channel,
+    dry : bool,
+    temp : bool
+  ) -> Result< publish::PublishPlan, untyped::Error >
   {
-    let mut paths = HashSet::new();
+    let mut paths = collection::HashSet::new();
     // find all packages by specified folders
     for pattern in &patterns
     {
-      let current_path = AbsolutePath::try_from( std::path::PathBuf::from( pattern ) )?;
+      let current_path = AbsolutePath::try_from
+      (
+        fs::canonicalize( pattern.as_str() )?
+      )?;
+      // let current_path = AbsolutePath::try_from( std::path::PathBuf::from( pattern ) )?;
       // let current_paths = files::find( current_path, &[ "Cargo.toml" ] );
       paths.extend( Some( current_path ) );
     }
 
-    let mut metadata = if paths.is_empty()
+    let workspace = if paths.is_empty()
     {
-      Workspace::from_current_path()?
+      Workspace::try_from( CurrentPath )?
     }
     else
     {
-      // FIX : patterns can point to different workspaces. Current solution take first random path from list
+      // qqq : patterns can point to different workspaces. Current solution take first random path from list.
+      // A problem may arise if a user provides paths to packages from different workspaces
+      // and we do not check whether all packages are within the same workspace
+      // In the current solution, we'll choose the workspace related to the first package
       let current_path = paths.iter().next().unwrap().clone();
       let dir = CrateDir::try_from( current_path )?;
-
-      Workspace::with_crate_dir( dir )?
+      Workspace::try_from( dir )?
     };
-    let workspace_root_dir : AbsolutePath = metadata
-    .workspace_root()?
+
+    let workspace_root_dir : AbsolutePath = workspace
+    .workspace_root()
     .try_into()?;
-    let packages = metadata.load()?.packages()?;
-    let packages_to_publish : Vec< _ > = packages
-    .iter()
-    .filter( | &package | paths.contains( &AbsolutePath::try_from( package.manifest_path().as_std_path().parent().unwrap() ).unwrap() ) )
-    .map( | p | p.name().clone() )
+
+    let packages = workspace.packages();
+    let packages_to_publish : Vec< String > = packages
+    .clone()
+    .filter( | &package | paths.contains( &package.crate_dir().unwrap().into() ) )
+    .map( | p | p.name().to_string() )
+    .collect();
+    let package_map : collection::HashMap< String, package::Package< '_ > > = packages
+    .map( | p | ( p.name().to_string(), package::Package::from( p ) ) )
     .collect();
-    let package_map = packages.into_iter().map( | p | ( p.name().clone(), Package::from( p.clone() ) ) ).collect::< HashMap< _, _ > >();
 
-    let graph = metadata.graph();
-    let subgraph_wanted = graph::subgraph( &graph, &packages_to_publish );
-    let tmp = subgraph_wanted.map( | _, n | graph[ *n ].clone(), | _, e | graph[ *e ].clone() );
+    let graph = workspace_graph::graph( &workspace );
+    let subgraph_wanted = graph::subgraph
+    (
+      &graph,
+      &packages_to_publish[ .. ]
+    );
+    let tmp = subgraph_wanted
+    .map
+    (
+      | _, n |
+      graph[ *n ].clone(), | _, e | graph[ *e ].clone()
+    );
 
-    let mut unique_name = format!( "temp_dir_for_publish_command_{}", path_tools::path::unique_folder_name()? );
+    let mut unique_name = format!
+    (
+      "temp_dir_for_publish_command_{}",
+      path::unique_folder_name()?
+    );
 
     let dir = if temp
     {
@@ -154,7 +199,11 @@ mod private
 
       while temp_dir.exists()
       {
-        unique_name = format!( "temp_dir_for_publish_command_{}", path_tools::path::unique_folder_name()? );
+        unique_name = format!
+        (
+          "temp_dir_for_publish_command_{}",
+          path::unique_folder_name()?
+        );
         temp_dir = env::temp_dir().join( unique_name );
       }
 
@@ -166,14 +215,28 @@ mod private
       None
     };
 
-    let subgraph = graph::remove_not_required_to_publish( &package_map, &tmp, &packages_to_publish, dir.clone() )?;
-    let subgraph = subgraph.map( | _, n | n, | _, e | e );
+    let subgraph = graph::remove_not_required_to_publish
+    (
+      &package_map,
+      &tmp,
+      &packages_to_publish,
+      dir.clone()
+    )?;
+    let subgraph = subgraph
+    .map( | _, n | n, | _, e | e );
 
-    let queue = graph::toposort( subgraph ).unwrap().into_iter().map( | n | package_map.get( &n ).unwrap() ).cloned().collect::< Vec< _ > >();
+    let queue : Vec< _ > = graph::toposort( subgraph )
+    .unwrap()
+    .into_iter()
+    .map( | n | package_map.get( &n ).unwrap() )
+    .cloned()
+    .collect();
 
-    let roots = packages_to_publish.iter().map( | p | package_map.get( p ).unwrap().crate_dir() ).collect::< Vec< _ > >();
+    let roots : Vec< _ > = packages_to_publish
+    .iter()
+    .map( | p | package_map.get( p ).unwrap().crate_dir() ).collect();
 
-    let plan = package::PublishPlan::former()
+    let plan = publish::PublishPlan::former()
     .channel( channel )
     .workspace_dir( CrateDir::try_from( workspace_root_dir ).unwrap() )
     .option_base_temp_dir( dir.clone() )
@@ -190,13 +253,13 @@ mod private
   ///
 
   #[ cfg_attr( feature = "tracing", tracing::instrument ) ]
-  pub fn publish( plan : package::PublishPlan ) -> Result< PublishReport, ( PublishReport, Error ) >
+  pub fn publish( plan : publish::PublishPlan ) -> ResultWithReport< PublishReport, untyped::Error >
   {
     let mut report = PublishReport::default();
     let temp = plan.base_temp_dir.clone();
 
     report.plan = Some( plan.clone() );
-    for package_report in package::perform_packages_publish( plan ).err_with( || report.clone() )?
+    for package_report in publish::perform_packages_publish( plan ).err_with( || report.clone() )?
     {
       let path : &std::path::Path = package_report.get_info.as_ref().unwrap().current_path.as_ref();
       report.packages.push(( AbsolutePath::try_from( path ).unwrap(), package_report ));
@@ -209,26 +272,6 @@ mod private
 
     Ok( report )
   }
-
-
-  trait ErrWith< T, T1, E >
-  {
-    fn err_with< F >( self, f : F ) -> std::result::Result< T1, ( T, E ) >
-    where
-      F : FnOnce() -> T;
-  }
-
-  impl< T, T1, E > ErrWith< T, T1, Error > for Result< T1, E >
-  where
-    E : std::fmt::Debug + std::fmt::Display + Send + Sync + 'static,
-  {
-    fn err_with< F >( self, f : F ) -> Result< T1, ( T, Error ) >
-    where
-      F : FnOnce() -> T,
-    {
-      self.map_err( | e | ( f(), anyhow!( e ) ) )
-    }
-  }
 }
 
 //
diff --git a/module/move/willbe/src/action/publish_diff.rs b/module/move/willbe/src/action/publish_diff.rs
index 1bf0241e15..d27920c7bc 100644
--- a/module/move/willbe/src/action/publish_diff.rs
+++ b/module/move/willbe/src/action/publish_diff.rs
@@ -3,17 +3,19 @@ mod private
 {
   use crate::*;
 
-  use std::path::PathBuf;
-  use std::collections::HashMap;
-  use std::fmt::Formatter;
+  use path::PathBuf;
+  use collection::HashMap;
+  use std::fmt;
   use colored::Colorize;
   use crates_tools::CrateArchive;
 
-  use action::list::{ ListReport, ListNodeReport };
-  use _path::AbsolutePath;
-  use wtools::error::for_app::Result;
+  use action::list::ListReport;
+  use error::untyped::Result;
+  // qqq : group dependencies
   use diff::{ DiffReport, crate_diff };
-  use error_tools::for_app::format_err;
+  use error::untyped::format_err;
+  use tool::ListNodeReport;
+  use tool::TreePrinter;
 
   /// Options for `publish_diff` command
   #[ derive( Debug, former::Former ) ]
@@ -22,7 +24,7 @@ mod private
     path : PathBuf,
     keep_archive : Option< PathBuf >,
   }
-  
+
   #[ derive( Debug ) ]
   pub struct PublishDiffReport
   {
@@ -30,29 +32,46 @@ mod private
     pub root_path : AbsolutePath,
     pub tree : ListNodeReport,
   }
-  
+
   impl std::fmt::Display for PublishDiffReport
   {
-    fn fmt( &self, f : &mut Formatter< '_ > ) -> std::fmt::Result
+    fn fmt( &self, f : &mut fmt::Formatter< '_ > ) -> std::fmt::Result
     {
       let mut tree = self.tree.clone();
-      let root_path = tree.path.as_ref().unwrap().clone();
+      let root_path = tree.crate_dir.as_ref().unwrap().clone();
       let root_name = tree.name.clone();
       let root_version = tree.version.as_ref().unwrap().clone();
-      
+
       fn modify( diffs : &HashMap< AbsolutePath, DiffReport >, tree : &mut ListNodeReport )
       {
-        let path = tree.path.take().unwrap();
-        let path = path.as_path().to_string_lossy();
-        let path = path.strip_suffix( "Cargo.toml" ).unwrap_or( &path );
-        let root = AbsolutePath::try_from( path ).unwrap();
+        let path = tree.crate_dir.take().unwrap();
+        let root = AbsolutePath::from( path );
 
         let diff = diffs.get( &root ).unwrap();
 
         let has_changes = diff.has_changes();
-        tree.name = if has_changes { format!( "{}", tree.name.yellow() ) } else { tree.name.clone() };
-        tree.version.as_mut().map( | v | *v = format!( "{} {}", if has_changes { v.yellow() } else { v.as_str().into() }, if has_changes { "MODIFIED" } else { "" } ) );
-        
+        tree.name = if has_changes
+        {
+          format!( "{}", tree.name.yellow() )
+        }
+        else
+        {
+          tree.name.clone()
+        };
+        tree
+        .version
+        .as_mut()
+        .map
+        (
+          | v |
+          *v = format!
+          (
+            "{} {}",
+            if has_changes { v.yellow() } else { v.as_str().into() },
+            if has_changes { "MODIFIED" } else { "" }
+          )
+        );
+
         for dep in &mut tree.normal_dependencies
         {
           modify( diffs, dep )
@@ -60,12 +79,10 @@ mod private
       }
       modify( &self.diffs, &mut tree );
 
-      let path = root_path.as_path().to_string_lossy();
-      let path = path.strip_suffix( "Cargo.toml" ).unwrap_or( &path );
-      let root = AbsolutePath::try_from( path ).unwrap();
+      let root = AbsolutePath::from( root_path );
       let diff = self.diffs.get( &root ).unwrap();
-      
-      writeln!( f, "Tree:\n{}", tree )?;
+      let printer = TreePrinter::new( &tree );
+      writeln!( f, "Tree:\n{}", printer )?;
       if diff.has_changes()
       {
         writeln!( f, "Changes detected in `{root_name} {root_version}`:" )?;
@@ -75,7 +92,7 @@ mod private
         writeln!( f, "No changes found in `{root_name} {root_version}`. Files:" )?;
       }
       write!( f, "{}", diff )?;
-      
+
       Ok( () )
     }
   }
@@ -83,10 +100,11 @@ mod private
   /// Return the differences between a local and remote package versions.
   #[ cfg_attr( feature = "tracing", tracing::instrument ) ]
   pub fn publish_diff( o : PublishDiffOptions ) -> Result< PublishDiffReport >
+  // qqq : don't use 1-prameter Result
   {
     let path = AbsolutePath::try_from( o.path )?;
     let dir = CrateDir::try_from( path.clone() )?;
-    
+
     let list = action::list
     (
       action::list::ListOptions::former()
@@ -98,22 +116,39 @@ mod private
       .form()
     )
     .unwrap();
-    let ListReport::Tree( mut tree ) = list else { return Err( format_err!( "Logical error. Unexpected list format" ) ) };
+    let ListReport::Tree( tree ) = list
+    else
+    {
+      return Err( format_err!( "Logical error. Unexpected list format" ) )
+    };
     let mut tasks = vec![ tree[ 0 ].clone() ];
     let mut diffs = HashMap::new();
     let mut current_idx = 0;
     while current_idx < tasks.len()
     {
-      let path = tasks[ current_idx ].path.as_ref().unwrap().to_string_lossy();
-      let path = path.strip_suffix( "Cargo.toml" ).unwrap_or( &path );
-      let path = AbsolutePath::try_from( path )?;
+      // let path = tasks[ current_idx ].crate_dir.as_ref().unwrap().to_string_lossy();
+      let path = tasks[ current_idx ]
+      .info
+      .crate_dir
+      .as_ref()
+      .unwrap()
+      .clone()
+      .absolute_path();
+      // aaa : looks bad. use ready newtypes // aaa : removed
       let dir = CrateDir::try_from( path.clone() )?;
 
       let package = package::Package::try_from( dir.clone() )?;
       let name = &package.name()?;
       let version = &package.version()?;
 
-    _ = cargo::pack( cargo::PackOptions::former().path( dir.as_ref() ).allow_dirty( true ).no_verify( true ).dry( false ).form() )?;
+    _ = cargo::pack
+    (
+      cargo::PackOptions::former()
+      .path( dir.as_ref() )
+      .allow_dirty( true )
+      .checking_consistency( false )
+      .dry( false ).form()
+    )?;
     let l = CrateArchive::read( packed_crate::local_path( name, version, dir )? )?;
     let r = CrateArchive::download_crates_io( name, version ).unwrap();
 
@@ -133,15 +168,25 @@ mod private
         }
       }
       diffs.insert( path, crate_diff( &l, &r ).exclude( diff::PUBLISH_IGNORE_LIST ) );
-      tasks.extend( tasks[ current_idx ].normal_dependencies.clone() );
-      
+      let report = tasks[ current_idx ].info.normal_dependencies.clone();
+      let printer : Vec< TreePrinter > = report
+      .iter()
+      .map( | rep | TreePrinter::new( rep ) )
+      .collect();
+      tasks.extend( printer );
+
       current_idx += 1;
     }
+    let printer = tree;
+    let mut rep : Vec< ListNodeReport > = printer
+    .iter()
+    .map( | printer | printer.info.clone() )
+    .collect();
     let report = PublishDiffReport
     {
       root_path : path.clone(),
       diffs,
-      tree : tree.remove( 0 ),
+      tree : rep.remove( 0 ),
     };
 
     Ok( report )
diff --git a/module/move/willbe/src/action/readme_health_table_renew.rs b/module/move/willbe/src/action/readme_health_table_renew.rs
index e9a9bb72e6..b7a7736b03 100644
--- a/module/move/willbe/src/action/readme_health_table_renew.rs
+++ b/module/move/willbe/src/action/readme_health_table_renew.rs
@@ -4,50 +4,71 @@ mod private
 
   use std::
   {
-    str::FromStr,
-    fs::{ OpenOptions, File, read_dir },
-    path::{ Path, PathBuf },
+    fs::{ OpenOptions, File },
     io::{ Write, Read, Seek, SeekFrom },
-    collections::HashMap,
   };
-
-  // aaa : for Petro : don't use cargo_metadata and Package directly, use facade
-  // aaa : ✅
-
-
-  use convert_case::{ Case, Casing };
+  use path::{ Path, PathBuf };
+  use convert_case::Casing;
   use toml_edit::Document;
   use regex::bytes::Regex;
+  use collection::HashMap;
 
-  use wtools::error::
+  use error::
   {
-    err,
-    for_app::
+    Error,
+    untyped::
     {
-      Error,
+      Error as wError,
       Result,
       Context,
       format_err,
-      bail,
     }
   };
-  use manifest::private::repo_url;
-  use _path::AbsolutePath;
+  use manifest::repo_url;
+  // use path::AbsolutePath;
 
   static TAG_TEMPLATE: std::sync::OnceLock< Regex > = std::sync::OnceLock::new();
   static CLOSE_TAG: std::sync::OnceLock< Regex > = std::sync::OnceLock::new();
 
-
   /// Initializes two global regular expressions that are used to match tags.
   fn regexes_initialize()
   {
-    TAG_TEMPLATE.set( regex::bytes::Regex::new( r#"<!--\{ generate.healthtable(\(\)|\{\}|\(.*?\)|\{.*?\}) \} -->"# ).unwrap() ).ok();
-    CLOSE_TAG.set( regex::bytes::Regex::new( r#"<!--\{ generate\.healthtable\.end \} -->"# ).unwrap() ).ok();
+    TAG_TEMPLATE.set
+    (
+      regex::bytes::Regex::new
+      (
+        r#"<!--\{ generate.healthtable(\(\)|\{\}|\(.*?\)|\{.*?\}) \} -->"#
+      ).unwrap()
+    ).ok();
+    CLOSE_TAG.set
+    (
+      regex::bytes::Regex::new
+      (
+        r#"<!--\{ generate\.healthtable\.end \} -->"#
+      ).unwrap()
+    ).ok();
   }
 
+  #[ derive( Debug, Error )]
+  pub enum HealthTableRenewError
+  {
+    #[ error( "Common error: {0}" ) ]
+    Common( #[ from ] wError ),
+    #[ error( "I/O error: {0}" ) ]
+    IO( #[ from ] std::io::Error ),
+    #[ error( "Path error: {0}" ) ]
+    Path( #[ from ] PathError ),
+    #[ error( "Workspace error: {0}" ) ]
+    Workspace( #[ from ] WorkspaceInitError ),
+    #[ error( "Utf8Error error: {0}" ) ]
+    Utf8Error( #[ from ] std::str::Utf8Error ),
+    #[ error( "Toml edit error: {0}" ) ]
+    Toml( #[ from ] toml_edit::TomlError )
+  }
 
   /// `Stability` is an enumeration that represents the stability level of a feature.
-  #[ derive( Debug ) ]
+  #[ derive( Debug, derive_tools::FromStr ) ]
+  #[ display( style = "snake_case" ) ]
   pub enum Stability
   {
     /// The feature is still being tested and may change.
@@ -62,26 +83,11 @@ mod private
     Deprecated,
   }
 
-  impl FromStr for Stability
-  {
-    type Err = Error;
-
-    fn from_str( s : &str ) -> Result< Self, Self::Err >
-    {
-      match s
-      {
-        "experimental" => Ok( Stability::Experimental ),
-        "unstable" => Ok( Stability::Unstable ),
-        "stable" => Ok( Stability::Stable ),
-        "frozen" => Ok( Stability::Frozen ),
-        "deprecated" => Ok( Stability::Deprecated ),
-        _ => Err( err!( "Fail to parse stability" ) ),
-      }
-    }
-  }
+  // aaa : qqq : derive?
+  // aaa : add
 
   /// Retrieves the stability level of a package from its `Cargo.toml` file.
-  fn stability_get( package_path: &Path ) -> Result< Stability >
+  fn stability_get( package_path : &Path ) -> Result< Stability, HealthTableRenewError >
   {
     let path = package_path.join( "Cargo.toml" );
     if path.exists()
@@ -101,48 +107,66 @@ mod private
     }
     else
     {
-      Err( err!( "No Cargo.toml found" ) )
+      Err( HealthTableRenewError::Common( wError::msg( "Cannot find Cargo.toml" )))
     }
   }
 
   /// Represents parameters that are common for all tables
   #[ derive( Debug ) ]
-  struct GlobalTableParameters
+  struct GlobalTableOptions
   {
     /// Path to the root repository.
-    core_url: String,
+    core_url : String,
     /// User and repository name, written through '/'.
-    user_and_repo: String,
+    user_and_repo : String,
     /// List of branches in the repository.
-    branches: Option< Vec< String > >,
+    branches : Option< Vec< String > >,
     /// workspace root
-    workspace_root : String,
+    workspace_root : PathBuf,
+    // aaa : for Petro : is not that path?
+    // aaa : done
   }
 
   /// Structure that holds the parameters for generating a table.
   #[ derive( Debug ) ]
-  struct TableParameters
+  struct TableOptions
   {
     // Relative path from workspace root to directory with modules
-    base_path: String,
+    base_path : String,
     // include branches column flag
-    include_branches: bool,
+    include_branches : bool,
     // include stability column flag
-    include_stability: bool,
+    include_stability : bool,
     // include docs column flag
-    include_docs: bool,
+    include_docs : bool,
     // include sample column flag
-    include: bool,
+    include : bool,
   }
 
-  impl From< HashMap< String, query::Value > > for TableParameters
+  impl From< HashMap< String, query::Value > > for TableOptions
   {
-    fn from( value : HashMap< String, query::Value >) -> Self
+    fn from( value : HashMap< String, query::Value > ) -> Self
     {
-      let include_branches = value.get( "with_branches" ).map( | v | bool::from( v ) ).unwrap_or( true );
-      let include_stability = value.get( "with_stability" ).map( | v | bool::from( v ) ).unwrap_or( true );
-      let include_docs = value.get( "with_docs" ).map( | v | bool::from( v ) ).unwrap_or( true );
-      let include = value.get( "with_gitpod" ).map( | v | bool::from( v ) ).unwrap_or( true );
+      let include_branches = value
+      .get( "with_branches" )
+      .map( | v | bool::from( v ) )
+      .unwrap_or( true );
+
+      let include_stability = value
+      .get( "with_stability" )
+      .map( | v | bool::from( v ) )
+      .unwrap_or( true );
+
+      let include_docs = value
+      .get( "with_docs" )
+      .map( | v | bool::from( v ) )
+      .unwrap_or( true );
+
+      let include = value
+      .get( "with_gitpod" )
+      .map( | v | bool::from( v ) )
+      .unwrap_or( true );
+
       let b_p = value.get( "1" );
       let base_path = if let Some( query::Value::String( path ) ) = value.get( "path" ).or( b_p )
       {
@@ -152,19 +176,27 @@ mod private
       {
         "./"
       };
-      Self { base_path: base_path.to_string(), include_branches, include_stability, include_docs, include }
+      Self
+      {
+        base_path: base_path.to_string(),
+        include_branches,
+        include_stability,
+        include_docs,
+        include
+      }
     }
   }
 
-  impl GlobalTableParameters
+  impl GlobalTableOptions
   {
     /// Initializes the struct's fields from a `Cargo.toml` file located at a specified path.
-    fn initialize_from_path( path: &Path ) -> Result< Self >
+    fn initialize_from_path( path : &Path ) -> Result< Self, HealthTableRenewError >
     {
+
       let cargo_toml_path = path.join( "Cargo.toml" );
       if !cargo_toml_path.exists()
       {
-        bail!( "Cannot find Cargo.toml" )
+        return Err( HealthTableRenewError::Common( wError::msg( "Cannot find Cargo.toml" )))
       }
       else
       {
@@ -200,7 +232,16 @@ mod private
         {
           user_and_repo = url::git_info_extract( core_url )?;
         }
-        Ok( Self { core_url: core_url.unwrap_or_default(), user_and_repo, branches, workspace_root: path.to_string_lossy().to_string() } )
+        Ok
+        (
+          Self
+          {
+            core_url : core_url.unwrap_or_default(),
+            user_and_repo,
+            branches,
+            workspace_root : path.to_path_buf()
+          }
+        )
       }
     }
 
@@ -216,15 +257,20 @@ mod private
   /// will mean that at this place the table with modules located in the directory module/core will be generated.
   /// The tags do not disappear after generation.
   /// Anything between the opening and closing tag will be destroyed.
-  pub fn readme_health_table_renew( path : &Path ) -> Result< () >
+  // aaa : for Petro : typed errors
+  // aaa : done
+  pub fn readme_health_table_renew( path : &Path ) -> Result< (), HealthTableRenewError >
   {
     regexes_initialize();
-    let absolute_path = AbsolutePath::try_from( path )?;
-    let mut cargo_metadata = Workspace::with_crate_dir( CrateDir::try_from( absolute_path )? )?;
-    let workspace_root = workspace_root( &mut cargo_metadata )?;
-    let mut parameters = GlobalTableParameters::initialize_from_path( &workspace_root )?;
+    let workspace = Workspace::try_from( CrateDir::try_from( path )? )?;
+    let workspace_root = workspace.workspace_root();
+    let mut parameters = GlobalTableOptions::initialize_from_path
+    (
+      &workspace_root
+    )?;
 
-    let read_me_path = workspace_root.join( readme_path(&workspace_root ).ok_or_else( || format_err!( "Fail to find README.md" ) )?);
+    let read_me_path = workspace_root
+    .join( repository::readme_path( &workspace_root )? );
     let mut file = OpenOptions::new()
     .read( true )
     .write( true )
@@ -253,8 +299,18 @@ mod private
           .ok_or( format_err!( "Fail to parse group" ) )?
           .as_bytes()
           )?;
-          let params: TableParameters  = query::parse( raw_table_params ).unwrap().into_map( vec![] ).into();
-          let table = package_readme_health_table_generate( &mut cargo_metadata, &params, &mut parameters )?;
+          let params: TableOptions  = query::parse
+          (
+            raw_table_params
+          ).unwrap()
+          .into_map( vec![] )
+          .into();
+          let table = package_readme_health_table_generate
+          (
+            &workspace,
+            &params,
+            &mut parameters
+          )?;
           tables.push( table );
           tags_closures.push( ( open.end(), close.start() ) );
         }
@@ -266,11 +322,22 @@ mod private
   }
 
   /// Writes tables into a file at specified positions.
-  fn tables_write_into_file(  tags_closures : Vec< ( usize, usize ) >, tables: Vec< String >, contents: Vec< u8 >, mut file: File ) -> Result< () >
+  fn tables_write_into_file
+  (
+    tags_closures : Vec< ( usize, usize ) >,
+    tables: Vec< String >,
+    contents: Vec< u8 >,
+    mut file: File
+  ) -> Result< (), HealthTableRenewError >
   {
     let mut buffer: Vec< u8 > = vec![];
     let mut start: usize = 0;
-    for ( ( end_of_start_tag, start_of_end_tag ), con ) in tags_closures.iter().zip( tables.iter() )
+    for
+    (
+      ( end_of_start_tag, start_of_end_tag ),
+      con
+    )
+    in tags_closures.iter().zip( tables.iter() )
     {
       range_to_target_copy( &*contents, &mut buffer, start, *end_of_start_tag )?;
       range_to_target_copy( con.as_bytes(), &mut buffer, 0,con.len() - 1 )?;
@@ -285,24 +352,33 @@ mod private
 
   /// Generate table from `table_parameters`.
   /// Generate header, iterate over all modules in package (from table_parameters) and append row.
-  fn package_readme_health_table_generate(  cache : &mut Workspace, table_parameters: &TableParameters, parameters: & mut GlobalTableParameters ) -> Result< String, Error >
+  fn package_readme_health_table_generate
+  (
+    workspace : &Workspace,
+    table_parameters: &TableOptions,
+    parameters: &mut GlobalTableOptions,
+  ) -> Result< String, HealthTableRenewError >
   {
     let directory_names = directory_names
     (
-      cache
-      .workspace_root()?
-      .join( &table_parameters.base_path ),
-      &cache
-      .load()?
+      workspace
+      .workspace_root()
+      .join( &table_parameters.base_path ).to_path_buf(),
+      workspace
       .packages()
-      .map_err( | err | format_err!( err ) )?
     )?;
     let mut table = table_header_generate( parameters, &table_parameters );
     for package_name in directory_names
     {
       let stability = if table_parameters.include_stability
       {
-        Some( stability_get( &cache.workspace_root()?.join( &table_parameters.base_path ).join( &package_name ) )? )
+        Some
+        (
+          stability_get
+          (
+            &workspace.workspace_root().join( &table_parameters.base_path ).join( &package_name )
+          )?
+        )
       }
       else
       {
@@ -310,63 +386,125 @@ mod private
       };
       if parameters.core_url == ""
       {
-        let module_path = &cache.workspace_root()?.join( &table_parameters.base_path ).join( &package_name );
-        parameters.core_url = repo_url( &module_path )
+        let module_path = workspace
+        .workspace_root()
+        .join( &table_parameters.base_path )
+        .join( &package_name );
+        // parameters.core_url = repo_url( &module_path )
+        parameters.core_url = repo_url( &module_path.clone().try_into()? )
         .context
         (
-          format_err!( "Can not find Cargo.toml in {} or Fail to extract repository url from git remote.\n specify the correct path to the main repository in Cargo.toml of workspace (in the [workspace.metadata] section named repo_url) in {} OR in Cargo.toml of each module (in the [package] section named repository, specify the full path to the module) for example {} OR ensure that at least one remotest is present in git. ", module_path.display(), cache.workspace_root()?.join( "Cargo.toml" ).display(), module_path.join( "Cargo.toml" ).display() )
+          // aaa : for Petro : unreadable : check other lines of code which are long
+          // aaa : done
+          format_err!
+          (
+            "Can not find Cargo.toml in {} or Fail to extract repository url from git remote.\n\
+specify the correct path to the main repository in Cargo.toml of workspace (in the [workspace.metadata] section named repo_url) in {} \
+OR in Cargo.toml of each module (in the [package] section named repository, specify the full path to the module) for example {} OR\
+ensure that at least one remotest is present in git. ",
+            module_path.display(),
+            workspace.workspace_root().join( "Cargo.toml" ).display(),
+            module_path.join( "Cargo.toml" ).display()
+          )
         )?;
         parameters.user_and_repo = url::git_info_extract( &parameters.core_url )?;
       }
-      table.push_str( &row_generate(&package_name, stability.as_ref(), parameters, &table_parameters) );
+      table.push_str
+      (
+        &row_generate
+        (
+          &package_name,
+          stability.as_ref(),
+          parameters,
+          &table_parameters
+        )
+      );
     }
     Ok( table )
   }
 
   /// Return topologically sorted modules name, from packages list, in specified directory.
-  fn directory_names( path : PathBuf, packages : &[ workspace::WorkspacePackage ] ) -> Result< Vec< String > >
+  // fn directory_names( path : PathBuf, packages : &[ WorkspacePackageRef< '_ > ] ) -> Result< Vec< String > >
+  fn directory_names< 'a >
+  (
+    path : PathBuf,
+    packages : impl Iterator< Item = WorkspacePackageRef< 'a > >,
+  ) -> Result< Vec< String >, HealthTableRenewError >
   {
     let path_clone = path.clone();
-    let module_package_filter: Option< Box< dyn Fn( &workspace::WorkspacePackage ) -> bool > > = Some
+    let module_package_filter : Option< Box< dyn Fn( WorkspacePackageRef< '_ > ) -> bool > > = Some
     (
       Box::new
       (
         move | p |
-        p.publish().is_none() && p.manifest_path().starts_with( &path )
+        {
+          let manifest_file = p.manifest_file();
+          if let Ok( pa ) = manifest_file
+          {
+            p.publish().is_none() && pa.starts_with( &path )
+          }
+          else
+          {
+            false
+          }
+        } // aaa : rid of unwraps
+        // aaa : done
       )
     );
-    let module_dependency_filter: Option< Box< dyn Fn( &workspace::WorkspacePackage, &workspace::Dependency ) -> bool > > = Some
+    let module_dependency_filter : Option< Box< dyn Fn( WorkspacePackageRef< '_ >, DependencyRef< '_ > ) -> bool > > = Some
     (
       Box::new
       (
         move | _, d |
-        d.path().is_some() && d.kind() != workspace::DependencyKind::Development && d.path().as_ref().unwrap().starts_with( &path_clone )
+        d.crate_dir().is_some() &&
+        d.kind() !=
+        DependencyKind::Development &&
+        d.crate_dir().as_ref().unwrap().starts_with( &path_clone )
       )
     );
     let module_packages_map = packages::filter
     (
       packages,
-      packages::FilterMapOptions { package_filter: module_package_filter, dependency_filter: module_dependency_filter },
+      packages::FilterMapOptions
+      {
+        package_filter : module_package_filter,
+        dependency_filter : module_dependency_filter
+      },
     );
     let module_graph = graph::construct( &module_packages_map );
-    let names = graph::topological_sort_with_grouping( module_graph )
+    let names : Vec< String > = graph::topological_sort_with_grouping( module_graph )
     .into_iter()
     .map
-    ( 
-      | mut group | 
+    (
+      | mut group |
       {
         group.sort();
-        group 
-      } 
-    ).flatten().collect::< Vec< _ > >();
-    
-    Ok(names)
+        group
+      }
+    )
+    .flatten()
+    .map( | n | n.to_string() )
+    .collect();
+
+    Ok( names )
   }
 
   /// Generate row that represents a module, with a link to it in the repository and optionals for stability, branches, documentation and links to the gitpod.
-  fn row_generate( module_name : &str, stability : Option< &Stability >, parameters : &GlobalTableParameters, table_parameters : &TableParameters ) -> String
+  fn row_generate
+  (
+    module_name : &str,
+    stability : Option< &Stability >,
+    parameters : &GlobalTableOptions,
+    table_parameters : &TableOptions
+  ) -> String
   {
-    let mut rou = format!( "| [{}]({}/{}) |", &module_name, &table_parameters.base_path, &module_name );
+    let mut rou = format!
+    (
+      "| [{}]({}/{}) |",
+      &module_name,
+      &table_parameters.base_path,
+      &module_name
+    );
     if table_parameters.include_stability
     {
       let mut stability = stability_generate( &stability.as_ref().unwrap() );
@@ -379,7 +517,14 @@ mod private
     }
     if table_parameters.include_docs
     {
-      rou.push_str( &format!( " [![docs.rs](https://raster.shields.io/static/v1?label=&message=docs&color=eee)](https://docs.rs/{}) |", &module_name ) );
+      rou.push_str
+      (
+        &format!
+        (
+          " [![docs.rs](https://raster.shields.io/static/v1?label=&message=docs&color=eee)](https://docs.rs/{}) |",
+          &module_name
+        )
+      );
     }
     if table_parameters.include
     {
@@ -389,12 +534,19 @@ mod private
       let example = if let Some( name ) = find_example_file( p.as_path(), &module_name )
       {
         let path = path.to_string_lossy().replace( '\\', "/" ).replace( "/", "%2F" );
-        let tmp = name.replace( '\\', "/" );
+        let tmp = name.to_string_lossy().replace( '\\', "/" );
         let file_name = tmp.split( '/' ).last().unwrap();
         let name = file_name.strip_suffix( ".rs" ).unwrap();
-        format!( "[![Open in Gitpod](https://raster.shields.io/static/v1?label=&message=try&color=eee)](https://gitpod.io/#RUN_PATH=.,SAMPLE_FILE={path}%2Fexamples%2F{file_name},RUN_POSTFIX=--example%20{name}/{})", parameters.core_url )
+        format!
+        (
+          "[![Open in Gitpod](https://raster.shields.io/static/v1?label=&message=try&color=eee)](https://gitpod.io/#RUN_PATH=.,SAMPLE_FILE={}%2Fexamples%2F{},RUN_POSTFIX=--example%20{}/{})",
+          path,
+          file_name,
+          name,
+          parameters.core_url,
+        )
       }
-      else 
+      else
       {
         "".into()
       };
@@ -402,26 +554,26 @@ mod private
     }
     format!( "{rou}\n" )
   }
-  
+
   /// todo
-  pub fn find_example_file(base_path : &Path, module_name : &str ) -> Option< String > 
+  pub fn find_example_file( base_path : &Path, module_name : &str ) -> Option< PathBuf >
   {
     let examples_dir = base_path.join("examples" );
 
     if examples_dir.exists() && examples_dir.is_dir()
     {
-      if let Ok( entries ) = std::fs::read_dir( &examples_dir ) 
+      if let Ok( entries ) = std::fs::read_dir( &examples_dir )
       {
-        for entry in entries 
+        for entry in entries
         {
-          if let Ok( entry ) = entry 
+          if let Ok( entry ) = entry
           {
             let file_name = entry.file_name();
-            if let Some( file_name_str ) = file_name.to_str() 
+            if let Some( file_name_str ) = file_name.to_str()
             {
-              if file_name_str == format!( "{module_name}_trivial.rs" ) 
+              if file_name_str == format!( "{module_name}_trivial.rs" )
               {
-                return Some( entry.path().to_string_lossy().into() )
+                return Some( entry.path() )
               }
             }
           }
@@ -430,18 +582,18 @@ mod private
     }
 
     // If module_trivial.rs doesn't exist, return any other file in the examples directory
-    if let Ok( entries ) = std::fs::read_dir( &examples_dir ) 
+    if let Ok( entries ) = std::fs::read_dir( &examples_dir )
     {
-      for entry in entries 
+      for entry in entries
       {
-        if let Ok( entry ) = entry 
+        if let Ok( entry ) = entry
         {
           let file_name = entry.file_name();
-          if let Some( file_name_str ) = file_name.to_str() 
+          if let Some( file_name_str ) = file_name.to_str()
           {
-            if file_name_str.ends_with( ".rs" ) 
+            if file_name_str.ends_with( ".rs" )
             {
-              return Some( entry.path().to_string_lossy().into() )
+              return Some( entry.path() )
             }
           }
         }
@@ -465,7 +617,11 @@ mod private
   }
 
   /// Generate table header
-  fn table_header_generate( parameters : &GlobalTableParameters, table_parameters : &TableParameters ) -> String
+  fn table_header_generate
+  (
+    parameters : &GlobalTableOptions,
+    table_parameters : &TableOptions
+  ) -> String
   {
     let mut header = String::from( "| Module |" );
     let mut separator = String::from( "|--------|" );
@@ -504,7 +660,7 @@ mod private
   }
 
   /// Generate cells for each branch
-  fn branch_cells_generate( table_parameters: &GlobalTableParameters, module_name: &str ) -> String
+  fn branch_cells_generate( table_parameters : &GlobalTableOptions, module_name : &str ) -> String
   {
     let cells = table_parameters
     .branches
@@ -514,20 +670,29 @@ mod private
     .map
     (
       | b |
-      format!( "[![rust-status](https://img.shields.io/github/actions/workflow/status/{}/module_{}_push.yml?label=&branch={b})]({}/actions/workflows/module_{}_push.yml?query=branch%3A{})", table_parameters.user_and_repo, &module_name.to_case( Case::Snake ), table_parameters.core_url, &module_name.to_case( Case::Snake ), b )
+      format!
+      (
+        "[![rust-status](https://img.shields.io/github/actions/workflow/status/{}/module_{}_push.yml?label=&branch={})]({}/actions/workflows/module_{}_push.yml?query=branch%3A{})",
+        table_parameters.user_and_repo,
+        &module_name.to_case( convert_case::Case::Snake ),
+        b,
+        table_parameters.core_url,
+        &module_name.to_case( convert_case::Case::Snake ),
+        b,
+      )
     )
     .collect::< Vec< String > >()
     .join( " | " );
     format!( " {cells} |" )
   }
 
-  /// Return workspace root
-  pub fn workspace_root( metadata : &mut Workspace ) -> Result< PathBuf >
-  {
-    Ok( metadata.load()?.workspace_root()?.to_path_buf() )
-  }
-
-  fn range_to_target_copy< T : Clone >( source : &[ T ], target : &mut Vec< T >, from : usize, to : usize ) -> Result< () >
+  fn range_to_target_copy< T : Clone >
+  (
+    source : &[ T ],
+    target : &mut Vec< T >,
+    from : usize,
+    to : usize
+  ) -> Result< (), HealthTableRenewError >
   {
     if from < source.len() && to < source.len() && from <= to
     {
@@ -536,66 +701,15 @@ mod private
     }
     else
     {
-      bail!( "Incorrect indexes" )
-    }
-  }
-
-  /// Searches for a README file in specific subdirectories of the given directory path.
-  ///
-  /// This function attempts to find a README file in the following subdirectories: ".github",
-  /// the root directory, and "./docs". It returns the path to the first found README file, or
-  /// `None` if no README file is found in any of these locations.
-  pub fn readme_path( dir_path : &Path ) -> Option< PathBuf >
-  {
-    if let Some( path ) = readme_in_dir_find( &dir_path.join( ".github" ) )
-    {
-      Some( path )
-    }
-    else if let Some( path )  = readme_in_dir_find( dir_path )
-    {
-      Some( path )
-    }
-    else if let Some( path )  = readme_in_dir_find( &dir_path.join( "docs" ) )
-    {
-      Some( path )
-    }
-    else
-    {
-      None
+      Err( HealthTableRenewError::Common( wError::msg( "Incorrect indexes" )))
     }
   }
-
-  /// Searches for a file named "readme.md" in the specified directory path.
-  ///
-  /// Given a directory path, this function searches for a file named "readme.md" in the specified
-  /// directory.
-  fn readme_in_dir_find( path : &Path ) -> Option< PathBuf >
-  {
-    read_dir( path )
-    .ok()?
-    .filter_map( Result::ok )
-    .filter( | p | p.path().is_file() )
-    .filter_map( | f |
-    {
-      let l_f = f.file_name().to_ascii_lowercase();
-      if l_f == "readme.md"
-      {
-        return Some( f.file_name() )
-      }
-      None
-    })
-    .max()
-    .map( PathBuf::from )
-  }
-
 }
 
 crate::mod_interface!
 {
-  /// Return workspace root
-  protected use workspace_root;
-  /// Find readme.md file in directory
-  protected use readme_path;
+  // /// Return workspace root
+  // protected use workspace_root;
   /// Stability
   protected use Stability;
   /// Generate Stability badge
diff --git a/module/move/willbe/src/action/readme_modules_headers_renew.rs b/module/move/willbe/src/action/readme_modules_headers_renew.rs
index 5809369b10..b44e6de2d5 100644
--- a/module/move/willbe/src/action/readme_modules_headers_renew.rs
+++ b/module/move/willbe/src/action/readme_modules_headers_renew.rs
@@ -1,62 +1,84 @@
 mod private
 {
   use crate::*;
-  use _path::AbsolutePath;
-  use action::readme_health_table_renew::{ readme_path, Stability, stability_generate, find_example_file };
+  use std::
+  {
+    borrow::Cow,
+    fs::OpenOptions,
+    fmt,
+    io::
+    {
+      Read,
+      Seek,
+      Write,
+      SeekFrom,
+    }
+  };
+  use collection::BTreeSet;
+  // use path::AbsolutePath;
+  use action::readme_health_table_renew::{ Stability, stability_generate, find_example_file };
   use package::Package;
-  use wtools::error::
+  use error::
   {
     err,
-    for_app::
-    { 
-      Result, 
+    untyped::
+    {
+      Result,
       Error as wError,
       Context,
     },
   };
-  use std::borrow::Cow;
-  use std::collections::BTreeSet;
-  use std::fmt::{Display, Formatter};
-  use std::fs::{ OpenOptions };
-  use std::io::{ Read, Seek, SeekFrom, Write };
+  // aaa : for Petro : group properly, don't repeat std::
+  // aaa : done
   use std::path::PathBuf;
   use convert_case::{ Case, Casing };
+  // use rayon::scope_fifo;
   use regex::Regex;
-  use entity::WorkspaceError;
-  use manifest::private::CrateDirError;
+  use entity::{ WorkspaceInitError, PathError };
   use package::PackageError;
-  use error_tools::for_lib::Error;
-  use error_tools::dependency::*;
-  // aaa : for Petro : rid off crate::x. ask
-  // aaa : add `use crate::*` first
+  use error::typed::Error;
+  use workspace_md_extension::WorkspaceMdExtension;
+  // use error::ErrWith;
 
   static TAGS_TEMPLATE : std::sync::OnceLock< Regex > = std::sync::OnceLock::new();
 
   fn regexes_initialize()
   {
-    TAGS_TEMPLATE.set( Regex::new( r"<!--\{ generate\.module_header\.start(\(\)|\{\}|\(.*?\)|\{.*?\}) \}-->(.|\n|\r\n)+<!--\{ generate\.module_header\.end \}-->" ).unwrap() ).ok();
+    TAGS_TEMPLATE.set
+    (
+      Regex::new
+      (
+        r"<!--\{ generate\.module_header\.start(\(\)|\{\}|\(.*?\)|\{.*?\}) \}-->(.|\n|\r\n)+<!--\{ generate\.module_header\.end \}-->"
+      ).unwrap()
+    ).ok();
   }
 
   /// Report.
   #[ derive( Debug, Default, Clone ) ]
   pub struct ModulesHeadersRenewReport
-  { 
-    found_files : BTreeSet< PathBuf >, 
+  {
+    found_files : BTreeSet< PathBuf >,
     touched_files : BTreeSet< PathBuf >,
   }
 
-  impl Display for ModulesHeadersRenewReport
+  impl fmt::Display for ModulesHeadersRenewReport
   {
-    fn fmt( &self, f : &mut Formatter< '_ > ) -> std::fmt::Result
+    fn fmt( &self, f : &mut fmt::Formatter< '_ > ) -> fmt::Result
     {
-      if self.touched_files.len() < self.found_files.len() 
+      if self.touched_files.len() < self.found_files.len()
       {
-        writeln!( f, "Something went wrong.\n{}/{} was touched.", self.found_files.len(), self.touched_files.len() )?;
+        writeln!
+        (
+          f,
+          "Something went wrong.\n{}/{} was touched.",
+          self.found_files.len(),
+          self.touched_files.len()
+        )?;
         return Ok(())
       }
       writeln!( f, "Touched files :" )?;
       let mut count = self.found_files.len();
-      for path in &self.touched_files 
+      for path in &self.touched_files
       {
         if let Some( file_path ) = path.to_str()
         {
@@ -72,19 +94,26 @@ mod private
     }
   }
 
+  /// The `ModulesHeadersRenewError` enum represents the various errors that can occur during
+  /// the renewal of module headers.
   #[ derive( Debug, Error ) ]
   pub enum ModulesHeadersRenewError
   {
+    /// Represents a common error.
     #[ error( "Common error: {0}" ) ]
     Common(#[ from ] wError ),
+    /// Represents an I/O error.
     #[ error( "I/O error: {0}" ) ]
     IO( #[ from ] std::io::Error ),
+    /// Represents an error related to workspace initialization.
     #[ error( "Workspace error: {0}" ) ]
-    Workspace( #[ from ] WorkspaceError),
+    Workspace( #[ from ] WorkspaceInitError ),
+    /// Represents an error related to a package.
     #[ error( "Package error: {0}" ) ]
-    Package( #[ from ] PackageError),
+    Package( #[ from ] PackageError ),
+    /// Represents an error related to directory paths.
     #[ error( "Directory error: {0}" ) ]
-    Directory( #[ from ] CrateDirError ),
+    Directory( #[ from ] PathError ),
   }
 
   /// The `ModuleHeader` structure represents a set of parameters, used for creating url for header.
@@ -101,22 +130,28 @@ mod private
   {
 
     /// Create `ModuleHeader` instance from the folder where Cargo.toml is stored.
-    fn from_cargo_toml( package : Package, default_discord_url : &Option< String > ) -> Result< Self, ModulesHeadersRenewError >
+    fn from_cargo_toml< 'a >
+    (
+      package : Package< 'a >,
+      default_discord_url : &Option< String >,
+    )
+    -> Result< Self, ModulesHeadersRenewError >
     {
       let stability = package.stability()?;
-
       let module_name = package.name()?;
+      let repository_url = package.repository()?
+      .ok_or_else::< wError, _ >( || err!( "Fail to find repository_url in module`s Cargo.toml" ) )?;
 
-      let repository_url = package.repository()?.ok_or_else::< wError, _ >( || err!( "Fail to find repository_url in module`s Cargo.toml" ) )?;
-
-      let discord_url = package.discord_url()?.or_else( || default_discord_url.clone() );
+      let discord_url = package
+      .discord_url()?
+      .or_else( || default_discord_url.clone() );
       Ok
         (
           Self
           {
-            module_path: package.manifest_path().parent().unwrap().as_ref().to_path_buf(),
+            module_path: package.manifest_file().parent().unwrap().as_ref().to_path_buf(),
             stability,
-            module_name,
+            module_name : module_name.to_string(),
             repository_url,
             discord_url,
           }
@@ -127,18 +162,42 @@ mod private
     fn to_header( self, workspace_path : &str ) -> Result< String, ModulesHeadersRenewError >
     {
       let discord = self.discord_url.map( | discord_url |
-        format!( " [![discord](https://img.shields.io/discord/872391416519737405?color=eee&logo=discord&logoColor=eee&label=ask)]({discord_url})" )
+        format!
+        (
+          " [![discord](https://img.shields.io/discord/872391416519737405?color=eee&logo=discord&logoColor=eee&label=ask)]({})",
+          discord_url
+        )
       )
       .unwrap_or_default();
 
-      let repo_url = url::extract_repo_url( &self.repository_url ).and_then( | r | url::git_info_extract( &r ).ok() ).ok_or_else::< wError, _ >( || err!( "Fail to parse repository url" ) )?;
-      let example = if let Some( name ) = find_example_file( self.module_path.as_path(), &self.module_name )
+      let repo_url = url::repo_url_extract( &self.repository_url )
+      .and_then( | r | url::git_info_extract( &r ).ok() )
+      .ok_or_else::< wError, _ >( || err!( "Fail to parse repository url" ) )?;
+      let example= if let Some( name ) = find_example_file
+      (
+        self.module_path.as_path(),
+        &self.module_name
+      )
       {
-        // qqq : for Petro : Hardcoded Strings, would be better to use `PathBuf` to avoid separator mismatch on Windows and Unix
-        let p = name.strip_prefix( workspace_path ).unwrap().get( 1.. ).unwrap().replace( "\\","%2F" );
-        let name = name.replace( "/", "\\" );
-        let name = name.split( "\\" ).last().unwrap().split( "." ).next().unwrap();
-        format!( " [![Open in Gitpod](https://raster.shields.io/static/v1?label=try&message=online&color=eee&logo=gitpod&logoColor=eee)](https://gitpod.io/#RUN_PATH=.,SAMPLE_FILE={p},RUN_POSTFIX=--example%20{}/https://github.com/{})", name, repo_url )
+        let relative_path = proper_path_tools::path::path_relative
+        (
+          workspace_path.try_into().unwrap(),
+          name
+        )
+        .to_string_lossy()
+        .to_string();
+        #[ cfg( target_os = "windows" ) ]
+        let relative_path = relative_path.replace( "\\", "/" );
+        // aaa : for Petro : use path_toools
+        // aaa : used
+        let p = relative_path.replace( "/","%2F" );
+        format!
+        (
+          " [![Open in Gitpod](https://raster.shields.io/static/v1?label=try&message=online&color=eee&logo=gitpod&logoColor=eee)](https://gitpod.io/#RUN_PATH=.,SAMPLE_FILE={},RUN_POSTFIX=--example%20{}/https://github.com/{})",
+          p,
+          p,
+          repo_url
+        )
       }
       else
       {
@@ -180,32 +239,64 @@ mod private
   /// [![experimental](https://raster.shields.io/static/v1?label=&message=experimental&color=orange)](https://github.com/emersion/stability-badges#experimental) | [![rust-status](https://github.com/Username/test/actions/workflows/ModuleChainOfPackagesAPush.yml/badge.svg)](https://github.com/Username/test/actions/workflows/ModuleChainOfPackagesAPush.yml)[![docs.rs](https://img.shields.io/docsrs/_chain_of_packages_a?color=e3e8f0&logo=docs.rs)](https://docs.rs/_chain_of_packages_a)[![Open in Gitpod](https://raster.shields.io/static/v1?label=try&message=online&color=eee&logo=gitpod&logoColor=eee)](https://gitpod.io/#RUN_PATH=.,SAMPLE_FILE=sample%2Frust%2F_chain_of_packages_a_trivial%2Fsrc%2Fmain.rs,RUN_POSTFIX=--example%20_chain_of_packages_a_trivial/https://github.com/Username/test)
   /// <!--{ generate.module_header.end }-->
   /// ```
-  pub fn readme_modules_headers_renew( path : AbsolutePath ) -> Result< ModulesHeadersRenewReport, ( ModulesHeadersRenewReport, ModulesHeadersRenewError ) >
+  pub fn readme_modules_headers_renew( crate_dir : CrateDir )
+  -> ResultWithReport< ModulesHeadersRenewReport, ModulesHeadersRenewError >
+  // -> Result< ModulesHeadersRenewReport, ( ModulesHeadersRenewReport, ModulesHeadersRenewError ) >
+  // xxx : newtype
   {
     let mut report = ModulesHeadersRenewReport::default();
     regexes_initialize();
-    let cargo_metadata = Workspace::with_crate_dir( CrateDir::try_from( path ).map_err( | e | ( report.clone(), e.into() ) )? ).map_err( | e | ( report.clone(), e.into() ) )?;
-    let discord_url = cargo_metadata.discord_url().map_err( | e | ( report.clone(), e.into() ) )?;
-    let paths = cargo_metadata.packages().map_err( | e | ( report.clone(), e.into() ) )?.into_iter().filter_map( | p | AbsolutePath::try_from( p.manifest_path() ).ok()).collect::< Vec< _ > >();
-    report.found_files = paths.iter().map( | ap | ap.as_ref().to_path_buf() ).collect();
+    let workspace = Workspace::try_from( crate_dir )
+    .err_with( || report.clone() )?; // xxx : qqq : use trait. everywhere
+    let discord_url = workspace.discord_url();
+
+    // qqq : inspect each collect in willbe and rid of most of them
+
+    let paths : Vec< AbsolutePath > = workspace
+    .packages()
+    .filter_map( | p | p.manifest_file().ok().and_then( | a | Some( a.inner() ) ) )
+    .collect();
+
+    report.found_files = paths
+    .iter()
+    .map( | ap | ap.as_ref().to_path_buf() )
+    .collect();
+
     for path in paths
     {
       let read_me_path =  path
       .parent()
       .unwrap()
-      .join( readme_path( path.parent().unwrap().as_ref() ).ok_or_else::< wError, _ >( || err!( "Fail to find README.md" ) ).map_err( | e | ( report.clone(), e.into() ) )? );
+      .join
+      (
+        repository::readme_path( path.parent().unwrap().as_ref() )
+        // .ok_or_else::< wError, _ >( || err!( "Fail to find README.md at {}", &path ) )
+        .err_with( || report.clone() )?
+      );
 
-      let pakage = Package::try_from( path.clone() ).map_err( | e | ( report.clone(), e.into() ) )?;
-      let header = ModuleHeader::from_cargo_toml( pakage.into(), &discord_url ).map_err( | e | ( report.clone(), e.into() ) )?;
+      let pakage = Package::try_from
+      (
+        CrateDir::try_from
+        (
+          &path
+          .parent()
+          .unwrap()
+        )
+        .err_with( || report.clone() )?
+      )
+      .err_with( || report.clone() )?;
+
+      let header = ModuleHeader::from_cargo_toml( pakage.into(), &discord_url )
+      .err_with( || report.clone() )?;
 
       let mut file = OpenOptions::new()
       .read( true )
       .write( true )
       .open( &read_me_path )
-      .map_err( | e | ( report.clone(), e.into() ) )?;
+      .err_with( || report.clone() )?;
 
       let mut content = String::new();
-      file.read_to_string( &mut content ).map_err( | e | ( report.clone(), e.into() ) )?;
+      file.read_to_string( &mut content ).err_with( || report.clone() )?;
 
       let raw_params = TAGS_TEMPLATE
       .get()
@@ -217,20 +308,44 @@ mod private
 
       _ = query::parse( raw_params ).context( "Fail to parse raw params." );
 
-      let content = header_content_generate( &content, header, raw_params, cargo_metadata.workspace_root().map_err( | e | ( report.clone(), e.into() ) )?.to_str().unwrap() ).map_err( | e | ( report.clone(), e.into() ) )?;
+      let content = header_content_generate
+      (
+        &content,
+        header,
+        raw_params,
+        workspace.workspace_root().to_str().unwrap()
+      ).err_with( || report.clone() )?;
 
-      file.set_len( 0 ).map_err( | e | ( report.clone(), e.into() ) )?;
-      file.seek( SeekFrom::Start( 0 ) ).map_err( | e | ( report.clone(), e.into() ) )?;
-      file.write_all( content.as_bytes() ).map_err( | e | ( report.clone(), e.into() ) )?;
+      file.set_len( 0 ).err_with( || report.clone() )?;
+      file.seek( SeekFrom::Start( 0 ) ).err_with( || report.clone() )?;
+      file.write_all( content.as_bytes() ).err_with( || report.clone() )?;
       report.touched_files.insert( path.as_ref().to_path_buf() );
     }
     Ok( report )
   }
 
-  fn header_content_generate< 'a >( content : &'a str, header : ModuleHeader, raw_params : &str, workspace_root : &str ) -> Result< Cow< 'a, str > >
+  fn header_content_generate< 'a >
+  (
+    content : &'a str,
+    header : ModuleHeader,
+    raw_params : &str,
+    workspace_root : &str
+  ) -> Result< Cow< 'a, str > >
   {
     let header = header.to_header( workspace_root )?;
-    let result = TAGS_TEMPLATE.get().unwrap().replace( &content, &format!( "<!--{{ generate.module_header.start{raw_params} }}-->\n{header}\n<!--{{ generate.module_header.end }}-->" ) );
+    let result = TAGS_TEMPLATE
+    .get()
+    .unwrap()
+    .replace
+    (
+      &content,
+      &format!
+      (
+        "<!--{{ generate.module_header.start{} }}-->\n{}\n<!--{{ generate.module_header.end }}-->",
+        raw_params,
+        header
+      )
+    );
     Ok( result )
   }
 }
@@ -241,4 +356,6 @@ crate::mod_interface!
   orphan use readme_modules_headers_renew;
   /// report
   orphan use ModulesHeadersRenewReport;
+  /// Error.
+  orphan use ModulesHeadersRenewError;
 }
\ No newline at end of file
diff --git a/module/move/willbe/src/action/test.rs b/module/move/willbe/src/action/test.rs
index 7ad9a532a4..86d9a09f95 100644
--- a/module/move/willbe/src/action/test.rs
+++ b/module/move/willbe/src/action/test.rs
@@ -2,31 +2,26 @@
 mod private
 {
   use crate::*;
-  use test::*;
-  use _path::AbsolutePath;
+  use entity::test::{ TestPlan, TestOptions, TestsReport, tests_run };
 
-  use std::collections::HashSet;
+  // use test::*;
+  // qqq : for Petro : no asterisks imports
+  // qqq : for Petro : bad : not clear what is imported, there are multiple filles with name test
 
+  use collection::HashSet;
   use std::{ env, fs };
 
-  #[ cfg( feature = "progress_bar" ) ]
-  use indicatif::{ MultiProgress, ProgressStyle };
-
   use former::Former;
-  use wtools::
+  use error::
   {
-    error::
+    untyped::
     {
-      for_app::
-      {
-        Error,
-        format_err
-      },
-      Result
+      Error,
+      format_err
     },
-    iter::Itertools,
+    Result
   };
-  use workspace::WorkspacePackage;
+  use iter::Itertools;
 
   /// Used to store arguments for running tests.
   ///
@@ -68,27 +63,36 @@ mod private
   /// It is possible to enable and disable various features of the crate.
   /// The function also has the ability to run tests in parallel using `Rayon` crate.
   /// The result of the tests is written to the structure `TestsReport` and returned as a result of the function execution.
-  pub fn test( args : TestsCommandOptions, dry : bool ) -> Result< TestsReport, ( TestsReport, Error ) >
+  // zzz : it probably should not be here
+  // xxx : use newtype
+  pub fn test( o : TestsCommandOptions, dry : bool ) -> Result< TestsReport, ( TestsReport, Error ) >
   {
-    #[ cfg( feature = "progress_bar" ) ]
-    let multiprocess = MultiProgress::new();
-    #[ cfg( feature = "progress_bar" ) ]
-    let style = ProgressStyle::with_template
-    (
-      "[{elapsed_precise}] {bar:40.cyan/blue} {pos:>7}/{len:7} {msg}",
-    )
-    .unwrap()
-    .progress_chars( "##-" );
 
-    let mut reports = TestsReport::default();
+    // qqq : incapsulate progress bar logic into some function of struct. don't keep it here
+    // aaa : done
+
+    let mut report = TestsReport::default();
     // fail fast if some additional installations required
-    let channels = channel::available_channels( args.dir.as_ref() ).map_err( | e | ( reports.clone(), e ) )?;
-    let channels_diff = args.channels.difference( &channels ).collect::< Vec< _ > >();
+    let channels = channel::available_channels( o.dir.as_ref() )
+    .err_with( || report.clone() )?;
+    let channels_diff : Vec< _ > = o.channels.difference( &channels ).collect();
     if !channels_diff.is_empty()
     {
-      return Err(( reports, format_err!( "Missing toolchain(-s) that was required : [{}]. Try to install it with `rustup install {{toolchain name}}` command(-s)", channels_diff.into_iter().join( ", " ) ) ))
+      // aaa : for Petro : non readable
+      // aaa : readable and with actual command
+      return Err
+      ((
+        report,
+        format_err!
+        (
+          "Missing toolchain(-s) that was required : [{}]. \
+Try to install it with `rustup install {}` command(-s)",
+          channels_diff.iter().join( ", " ),
+          channels_diff.iter().join( " " )
+        )
+      ))
     }
-    reports.dry = dry;
+    report.dry = dry;
     let TestsCommandOptions
     {
       dir : _ ,
@@ -104,13 +108,47 @@ mod private
       optimizations,
       variants_cap,
       with_progress,
-    } = args;
+    } = o;
 
-    let packages = needed_packages( args.dir.clone() ).map_err( | e | ( reports.clone(), e ) )?;
+    // zzz : watch and review after been ready
+    // aaa : for Petro : use relevant entity. use either, implement TryFrom< Either< CrateDir, ManifestFile > >
+    // aaa : done
+    // qqq : for Petro : nonsense
+    let path = match EitherDirOrFile::try_from( o.dir.as_ref() ).map_err( | e | ( report.clone(), e.into() ) )?.inner()
+    {
+      data_type::Either::Left( crate_dir ) => crate_dir,
+      data_type::Either::Right( manifest ) => CrateDir::from( manifest )
+    };
+
+    let workspace = Workspace
+    ::try_from( CrateDir::try_from( path.clone() ).err_with( || report.clone() )? )
+    .err_with( || report.clone() )?
+    // xxx : clone?
+    // aaa : for Petro : use trait !everywhere!
+    // aaa : !When I wrote this solution, pr with this changes was not yet ready.!
+    ;
+
+    // let packages = needed_packages( &workspace );
+    let packages = workspace
+    .packages()
+    .filter
+    (
+      move | p |
+      p
+      .manifest_file()
+      .is_ok() &&
+      p.
+      manifest_file()
+      .unwrap()
+      .starts_with( path.as_ref() )
+    )
+    // aaa : for Petro : too long line
+    // aaa : done
+    ;
 
     let plan = TestPlan::try_from
     (
-      &packages,
+      packages,
       &channels,
       power,
       include_features,
@@ -120,16 +158,18 @@ mod private
       with_all_features,
       with_none_features,
       variants_cap,
-    ).map_err( | e | ( reports.clone(), e ) )?;
+    ).err_with( || report.clone() )?;
 
     println!( "{plan}" );
+      // aaa : split on two functions for create plan and for execute
+    // aaa : it's already separated, look line: 203 : let result = tests_run( &options );
 
     let temp_path =  if temp
     {
       let mut unique_name = format!
       (
         "temp_dir_for_test_command_{}",
-        path_tools::path::unique_folder_name().map_err( | e | ( reports.clone(), e.into() ) )?
+        path::unique_folder_name().err_with( || report.clone() )?
       );
 
       let mut temp_dir = env::temp_dir().join( unique_name );
@@ -139,12 +179,12 @@ mod private
         unique_name = format!
         (
           "temp_dir_for_test_command_{}",
-          path_tools::path::unique_folder_name().map_err( | e | ( reports.clone(), e.into() ) )?
+          path::unique_folder_name().err_with( || report.clone() )?
         );
         temp_dir = env::temp_dir().join( unique_name );
       }
 
-      fs::create_dir( &temp_dir ).map_err( | e | ( reports.clone(), e.into() ) )?;
+      fs::create_dir( &temp_dir ).err_with( || report.clone() )?;
       Some( temp_dir )
     }
     else
@@ -156,49 +196,20 @@ mod private
     .concurrent( concurrent )
     .plan( plan )
     .option_temp( temp_path )
-    .dry( dry );
-
-    #[ cfg( feature = "progress_bar" ) ]
-    let test_options_former = if with_progress
-    {
-      let test_options_former = test_options_former.feature( TestOptionsProgressBarFeature{ multiprocess, style } );
-      test_options_former
-    }
-    else
-    {
-      test_options_former
-    };
+    .dry( dry )
+    .with_progress( with_progress );
 
     let options = test_options_former.form();
     let result = tests_run( &options );
 
     if temp
     {
-      fs::remove_dir_all( options.temp_path.unwrap() ).map_err( | e | ( reports.clone(), e.into() ) )?;
+      fs::remove_dir_all( options.temp_path.unwrap() ).err_with( || report.clone() )?;
     }
 
-    result
+    result.map_err( | ( report, e) | ( report, e.into() ) )
   }
 
-  fn needed_packages( path : AbsolutePath ) -> Result< Vec< WorkspacePackage > >
-  {
-    let path = if path.as_ref().file_name() == Some( "Cargo.toml".as_ref() )
-    {
-      path.parent().unwrap()
-    }
-    else
-    {
-      path
-    };
-    let metadata = Workspace::with_crate_dir( CrateDir::try_from( path.clone() )? )?;
-
-    let result = metadata
-    .packages()?
-    .into_iter()
-    .filter( move | x | x.manifest_path().starts_with( path.as_ref() ) )
-    .collect();
-    Ok( result )
-  }
 }
 
 crate::mod_interface!
diff --git a/module/move/willbe/src/action/workspace_renew.rs b/module/move/willbe/src/action/workspace_renew.rs
index d03fcda04d..707ea7423d 100644
--- a/module/move/willbe/src/action/workspace_renew.rs
+++ b/module/move/willbe/src/action/workspace_renew.rs
@@ -3,10 +3,14 @@ mod private
   use crate::*;
   use std::fs;
   use std::path::Path;
-  use error_tools::for_app::bail;
-  use error_tools::Result;
-  use wtools::iter::Itertools;
-  use crate::template::{Template, TemplateFileDescriptor, TemplateFiles, TemplateFilesBuilder, TemplateParameters, TemplateValues};
+  use error::untyped::bail;
+  use error::Result;
+  // qqq : group dependencies
+  use iter::Itertools;
+  use template::
+  {
+    TemplateFileDescriptor, TemplateFiles, TemplateFilesBuilder, TemplateParameters, TemplateValues
+  };
 
   /// Template for creating workspace files.
   #[ derive( Debug ) ]
@@ -17,45 +21,54 @@ mod private
     values : TemplateValues,
   }
 
-  impl Template<WorkspaceTemplateFiles> for WorkspaceTemplate
+  impl WorkspaceTemplate
   {
-    fn create_all( self, path : &Path ) -> Result< () >
-    {
-      self.files.create_all( path, &self.values )
-    }
-
-    fn parameters( &self ) -> &TemplateParameters
+    /// Returns template parameters
+    pub fn get_parameters( &self ) -> &TemplateParameters
     {
       &self.parameters
     }
+  }
 
-    fn set_values( &mut self, values : TemplateValues )
-    {
-      self.values = values
-    }
+  // impl Template<WorkspaceTemplateFiles> for WorkspaceTemplate
+  // {
+  //   fn create_all( self, path : &Path ) -> Result< () >
+  //   {
+  //     self.files.create_all( path, &self.values )
+  //   }
 
-    fn parameter_storage( &self ) -> &Path
-    {
-      "./.workspace_template.toml".as_ref()
-    }
+  //   fn parameters( &self ) -> &TemplateParameters
+  //   {
+  //     &self.parameters
+  //   }
 
-    fn template_name( &self ) -> &'static str
-    {
-      "workspace"
-    }
+  //   fn set_values( &mut self, values : TemplateValues )
+  //   {
+  //     self.values = values
+  //   }
 
-    fn get_values( &self ) -> &TemplateValues
-    {
-      &self.values
-    }
+  //   fn parameter_storage( &self ) -> &Path
+  //   {
+  //     "./.workspace_template.toml".as_ref()
+  //   }
 
-    fn get_values_mut( &mut self ) -> &mut TemplateValues
-    {
-      &mut self.values
-    }
+  //   fn template_name( &self ) -> &'static str
+  //   {
+  //     "workspace"
+  //   }
 
+  //   fn get_values( &self ) -> &TemplateValues
+  //   {
+  //     &self.values
+  //   }
 
-  }
+  //   fn get_values_mut( &mut self ) -> &mut TemplateValues
+  //   {
+  //     &mut self.values
+  //   }
+
+
+  // }
 
   impl Default for WorkspaceTemplate
   {
@@ -79,25 +92,65 @@ mod private
   ///
   /// Default implementation contains all required files.
   #[ derive( Debug ) ]
-  pub struct WorkspaceTemplateFiles(Vec< TemplateFileDescriptor > );
+  pub struct WorkspaceTemplateFiles( Vec< TemplateFileDescriptor > );
 
   impl Default for WorkspaceTemplateFiles
   {
     fn default() -> Self
     {
       let formed = TemplateFilesBuilder::former()
-      .file().data( include_str!( "../../template/workspace/.gitattributes" ) ).path( "./.gitattributes" ).end()
-      .file().data( include_str!( "../../template/workspace/.gitignore1" ) ).path( "./.gitignore" ).end()
-      .file().data( include_str!( "../../template/workspace/.gitpod.yml" ) ).path( "./.gitpod.yml" ).end()
-      .file().data( include_str!( "../../template/workspace/Cargo.hbs" ) ).path( "./Cargo.toml" ).is_template( true ).end()
-      .file().data( include_str!( "../../template/workspace/Makefile" ) ).path( "./Makefile" ).end()
-      .file().data( include_str!( "../../template/workspace/Readme.md" ) ).path( "./Readme.md" ).end()
-      .file().data( include_str!( "../../template/workspace/.cargo/config.toml" ) ).path( "./.cargo/config.toml" ).end()
-      .file().data( include_str!( "../../template/workspace/module/module1/Cargo.toml.x" ) ).path( "./module/Cargo.toml" ).end()
-      .file().data( include_str!( "../../template/workspace/module/module1/Readme.md" ) ).path( "./module/module1/Readme.md" ).end()
-      .file().data( include_str!( "../../template/workspace/module/module1/examples/module1_example.rs" ) ).path( "./module/module1/examples/module1_example.rs" ).end()
-      .file().data( include_str!( "../../template/workspace/module/module1/src/lib.rs" ) ).path( "./module/module1/src/lib.rs" ).end()
-      .file().data( include_str!( "../../template/workspace/module/module1/tests/hello_test.rs" ) ).path( "./module/module1/tests/hello_test.rs" ).end()
+      .file()
+        .data( include_str!( "../../template/workspace/.gitattributes" ) )
+        .path( "./.gitattributes" )
+        .end()
+      .file()
+        .data( include_str!( "../../template/workspace/.gitignore1" ) )
+        .path( "./.gitignore" )
+        .end()
+      .file()
+        .data( include_str!( "../../template/workspace/.gitpod.yml" ) )
+        .path( "./.gitpod.yml" )
+        .end()
+      .file()
+        .data( include_str!( "../../template/workspace/Cargo.hbs" ) )
+        .path( "./Cargo.toml" )
+        .is_template( true )
+        .end()
+      .file()
+        .data( include_str!( "../../template/workspace/Makefile" ) )
+        .path( "./Makefile" )
+        .end()
+      .file()
+        .data( include_str!( "../../template/workspace/Readme.md" ) )
+        .path( "./Readme.md" )
+        .end()
+      .file()
+        .data( include_str!( "../../template/workspace/.cargo/config.toml" ) )
+        .path( "./.cargo/config.toml" )
+        .end()
+      .file()
+        .data( include_str!( "../../template/workspace/module/module1/Cargo.toml.x" ) )
+        .path( "./module/Cargo.toml" )
+        .end()
+      .file()
+        .data( include_str!( "../../template/workspace/module/module1/Readme.md" ) )
+        .path( "./module/module1/Readme.md" )
+        .end()
+      .file()
+        .data
+        (
+          include_str!( "../../template/workspace/module/module1/examples/module1_example.rs" )
+        )
+        .path( "./module/module1/examples/module1_example.rs" )
+        .end()
+      .file()
+        .data( include_str!( "../../template/workspace/module/module1/src/lib.rs" ) )
+        .path( "./module/module1/src/lib.rs" )
+        .end()
+      .file()
+        .data( include_str!( "../../template/workspace/module/module1/tests/hello_test.rs" ) )
+        .path( "./module/module1/tests/hello_test.rs" )
+        .end()
       .form();
 
       Self( formed.files )
@@ -117,21 +170,43 @@ mod private
     }
   }
 
+  // zzz
   // qqq : for Petro : should return report
   // qqq : for Petro : should have typed error
-  // aaa : parametrized templates??
-  // aaa : use Viktor lib
   /// Creates workspace template
-  pub fn workspace_renew( path : &Path, mut template : WorkspaceTemplate, repository_url : String, branches : Vec< String > ) -> Result< () >
+  pub fn workspace_renew
+  (
+    path : &Path,
+    mut template : WorkspaceTemplate,
+    repository_url : String,
+    branches : Vec< String >
+  )
+  -> Result< () >
+  // qqq : don't use 1-prameter Result
   {
-    if fs::read_dir(path)?.count() != 0
+    if fs::read_dir( path )?.count() != 0
     {
       bail!( "Directory should be empty" )
     }
-    template.values.insert_if_empty( "project_name", wca::Value::String( path.file_name().unwrap().to_string_lossy().into() ) );
+    template
+    .values
+    .insert_if_empty
+    (
+      "project_name",
+      wca::Value::String( path.file_name().unwrap().to_string_lossy().into() )
+    );
     template.values.insert_if_empty( "url", wca::Value::String( repository_url ) );
-    template.values.insert_if_empty( "branches", wca::Value::String( branches.into_iter().map( | b | format!( r#""{}""#, b ) ).join( ", " ) ) );
-    template.create_all( path )?;
+    template
+    .values
+    .insert_if_empty
+    (
+      "branches",
+      wca::Value::String
+      (
+        branches.into_iter().map( | b | format!( r#""{}""#, b ) ).join( ", " )
+      )
+    );
+    template.files.create_all( path, &template.values )?;
     Ok( () )
   }
 }
diff --git a/module/move/willbe/src/bin/cargo-will.rs b/module/move/willbe/src/bin/cargo-will.rs
index 3e4e4ffeaf..53aa39e51e 100644
--- a/module/move/willbe/src/bin/cargo-will.rs
+++ b/module/move/willbe/src/bin/cargo-will.rs
@@ -6,7 +6,7 @@
 #[ allow( unused_imports ) ]
 use::willbe::*;
 
-fn main() -> Result< (), wtools::error::for_app::Error >
+fn main() -> Result< (), error::untyped::Error >
 {
   let args = std::env::args().skip( 1 ).collect();
   Ok( willbe::run( args )? )
diff --git a/module/move/willbe/src/bin/will.rs b/module/move/willbe/src/bin/will.rs
index e514a10bc4..cbaad31299 100644
--- a/module/move/willbe/src/bin/will.rs
+++ b/module/move/willbe/src/bin/will.rs
@@ -9,7 +9,10 @@
 #[ allow( unused_imports ) ]
 use::willbe::*;
 
-fn main() -> Result< (), wtools::error::for_app::Error >
+fn main() -> Result< (), error::untyped::Error >
 {
   Ok( willbe::run( std::env::args().collect() )? )
 }
+
+// cargo_subcommand_metadata::description!( "xxx" );
+// xxx : use
\ No newline at end of file
diff --git a/module/move/willbe/src/bin/willbe.rs b/module/move/willbe/src/bin/willbe.rs
index 4fe12f8995..5943573a67 100644
--- a/module/move/willbe/src/bin/willbe.rs
+++ b/module/move/willbe/src/bin/willbe.rs
@@ -6,7 +6,7 @@
 #[ allow( unused_imports ) ]
 use::willbe::*;
 
-fn main() -> Result< (), wtools::error::for_app::Error >
+fn main() -> Result< (), error::untyped::Error >
 {
   Ok( willbe::run( std::env::args().collect() )? )
 }
diff --git a/module/move/willbe/src/command/cicd_renew.rs b/module/move/willbe/src/command/cicd_renew.rs
index f87569e9a8..70d824c40c 100644
--- a/module/move/willbe/src/command/cicd_renew.rs
+++ b/module/move/willbe/src/command/cicd_renew.rs
@@ -2,14 +2,18 @@ mod private
 {
   use crate::*;
 
-  use wtools::error::{ anyhow::Context, Result };
+  use error::{ untyped::Context, Result };
 
   ///
   /// Generate table.
   ///
   pub fn cicd_renew() -> Result< () >
   {
-    action::cicd_renew( &std::env::current_dir()? ).context( "Fail to generate workflow" )
+    action::cicd_renew
+    ( 
+      &std::env::current_dir()? 
+    )
+    .context( "Fail to generate workflow" )
   }
 }
 
diff --git a/module/move/willbe/src/command/deploy_renew.rs b/module/move/willbe/src/command/deploy_renew.rs
index 7fe0ebf13e..4013cb4d05 100644
--- a/module/move/willbe/src/command/deploy_renew.rs
+++ b/module/move/willbe/src/command/deploy_renew.rs
@@ -3,9 +3,10 @@ mod private
   use crate::*;
 
   use wca::VerifiedCommand;
-  use wtools::error::{ anyhow::Context, Result };
-  use tool::template::Template;
-  use action::deploy_renew::*;
+  use error::{ untyped::Context, Result };
+  use tool::TemplateHolder;
+  //use tool::template::Template;
+  // use action::deploy_renew::*;
 
   ///
   /// Create new deploy.
@@ -14,7 +15,8 @@ mod private
   pub fn deploy_renew( o : VerifiedCommand ) -> Result< () >
   {
     let current_dir = std::env::current_dir()?;
-    let mut template = DeployTemplate::default();
+
+    let mut template = TemplateHolder::default();
     _ = template.load_existing_params( &current_dir );
     let parameters = template.parameters();
     let mut values = parameters.values_from_props( &o.props );
@@ -23,7 +25,8 @@ mod private
       values.interactive_if_empty( mandatory );
     }
     template.set_values( values );
-    action::deploy_renew( &current_dir, template ).context( "Fail to create deploy template" )
+    action::deploy_renew( &current_dir, template )
+    .context( "Fail to create deploy template" )
   }
 
 }
diff --git a/module/move/willbe/src/command/features.rs b/module/move/willbe/src/command/features.rs
index ad69897935..50a7356dfc 100644
--- a/module/move/willbe/src/command/features.rs
+++ b/module/move/willbe/src/command/features.rs
@@ -3,29 +3,35 @@ mod private
   use crate::*;
 
   use action::features::FeaturesOptions;
+  use std::fs;
   use std::path::PathBuf;
-  use _path::AbsolutePath;
+  // // use path::AbsolutePath;
   use wca::VerifiedCommand;
-  use wtools::error::Result;
+  use error::Result;
+  // qqq : group dependencies
 
   ///
   /// List features of a package.
   ///
 
+  // qqq : don't use 1-prameter Result
   pub fn features( o : VerifiedCommand ) -> Result< () >
   {
     let path : PathBuf = o.args.get_owned( 0 ).unwrap_or_else( || "./".into() );
-    let path = AbsolutePath::try_from( path )?;
-    let with_features_deps = o.props.get_owned( "with_features_deps" ).unwrap_or( false );
-    let options = FeaturesOptions::former()
-    .manifest_dir( path )
+    let crate_dir = CrateDir::try_from( fs::canonicalize( path )? )?;
+    let with_features_deps = o
+    .props
+    .get_owned( "with_features_deps" )
+    .unwrap_or( false );
+    let o = FeaturesOptions::former()
+    .crate_dir( crate_dir )
     .with_features_deps( with_features_deps )
     .form();
-    let report = action::features( options );
+    let report = action::features( o );
     match report
     {
-      Ok(success) => println!("{success}"),
-      Err(failure) => eprintln!("{failure}"),
+      Ok( success ) => println!( "{success}" ),
+      Err( failure ) => eprintln!( "{failure}" ),
     }
     Ok( () )
   }
diff --git a/module/move/willbe/src/command/list.rs b/module/move/willbe/src/command/list.rs
index 154317904c..0e1fd8a653 100644
--- a/module/move/willbe/src/command/list.rs
+++ b/module/move/willbe/src/command/list.rs
@@ -3,20 +3,20 @@ mod private
 {
   use crate::*;
 
-  use { action, wtools };
-
   use std::
   {
     str::FromStr,
     path::PathBuf,
-    collections::HashSet,
   };
-
   use wca::VerifiedCommand;
-  use wtools::error::{ for_app::Context, Result };
+  use error::{ untyped::Context, Result };
+  use collection::HashSet;
 
-  use _path::AbsolutePath;
-  use action::{ list as l, list::{ ListFormat, ListOptions } };
+  use action::
+  {
+    list as l,
+    list::{ ListFormat, ListOptions },
+  };
   use former::Former;
 
   #[ derive( Former ) ]
@@ -49,8 +49,10 @@ mod private
 
   pub fn list( o : VerifiedCommand ) -> Result< () >
   {
-    let path_to_workspace : PathBuf = o.args.get_owned( 0 ).unwrap_or( std::env::current_dir().context( "Workspace list command without subject" )? );
-    let path_to_workspace = AbsolutePath::try_from( path_to_workspace )?;
+    let path_to_workspace : PathBuf = o.args
+    .get_owned( 0 )
+    .unwrap_or( std::env::current_dir().context( "Workspace list command without subject" )? );
+    // let path_to_workspace = AbsolutePath::try_from( fs::canonicalize( path_to_workspace )? )?;
 
     let ListProperties { format, with_version, with_path, with_local, with_remote, with_primary, with_dev, with_build } = o.props.try_into()?;
 
@@ -69,7 +71,7 @@ mod private
     if with_dev { categories.insert( l::DependencyCategory::Dev ); }
     if with_build { categories.insert( l::DependencyCategory::Build ); }
 
-    let args = ListOptions::former()
+    let o = ListOptions::former()
     .path_to_manifest( crate_dir )
     .format( format )
     .info( additional_info )
@@ -77,7 +79,7 @@ mod private
     .dependency_categories( categories )
     .form();
 
-    match action::list( args )
+    match action::list( o )
     {
       Ok( report ) =>
       {
@@ -96,19 +98,29 @@ mod private
 
   impl TryFrom< wca::Props > for ListProperties
   {
-    type Error = wtools::error::for_app::Error;
+    type Error = error::untyped::Error;
     fn try_from( value : wca::Props ) -> Result< Self, Self::Error >
     {
       let mut this = Self::former();
 
-      this = if let Some( v ) = value.get_owned( "format" ).map( ListFormat::from_str ) { this.format( v? ) } else { this };
-      this = if let Some( v ) = value.get_owned( "with_version" ) { this.with_version::< bool >( v ) } else { this };
-      this = if let Some( v ) = value.get_owned( "with_path" ) { this.with_path::< bool >( v ) } else { this };
-      this = if let Some( v ) = value.get_owned( "with_local" ) { this.with_local::< bool >( v ) } else { this };
-      this = if let Some( v ) = value.get_owned( "with_remote" ) { this.with_remote::< bool >( v ) } else { this };
-      this = if let Some( v ) = value.get_owned( "with_primary" ) { this.with_primary::< bool >( v ) } else { this };
-      this = if let Some( v ) = value.get_owned( "with_dev" ) { this.with_dev::< bool >( v ) } else { this };
-      this = if let Some( v ) = value.get_owned( "with_build" ) { this.with_build::< bool >( v ) } else { this };
+      this = if let Some( v ) = value
+      .get_owned( "format" )
+      .map( ListFormat::from_str ) { this.format( v? ) } else { this };
+
+      this = if let Some( v ) = value
+      .get_owned( "with_version" ) { this.with_version::< bool >( v ) } else { this };
+      this = if let Some( v ) = value
+      .get_owned( "with_path" ) { this.with_path::< bool >( v ) } else { this };
+      this = if let Some( v ) = value
+      .get_owned( "with_local" ) { this.with_local::< bool >( v ) } else { this };
+      this = if let Some( v ) = value
+      .get_owned( "with_remote" ) { this.with_remote::< bool >( v ) } else { this };
+      this = if let Some( v ) = value
+      .get_owned( "with_primary" ) { this.with_primary::< bool >( v ) } else { this };
+      this = if let Some( v ) = value
+      .get_owned( "with_dev" ) { this.with_dev::< bool >( v ) } else { this };
+      this = if let Some( v ) = value
+      .get_owned( "with_build" ) { this.with_build::< bool >( v ) } else { this };
 
       Ok( this.form() )
     }
diff --git a/module/move/willbe/src/command/main_header.rs b/module/move/willbe/src/command/main_header.rs
index 558f2a625b..5a957a79d1 100644
--- a/module/move/willbe/src/command/main_header.rs
+++ b/module/move/willbe/src/command/main_header.rs
@@ -2,17 +2,18 @@ mod private
 {
   use crate::*;
   use action;
-  use _path::AbsolutePath;
-  use error_tools::Result;
-  use wtools::error::anyhow::Error;
+  use error::untyped::{ Error, Result };
 
   /// Generates header to main Readme.md file.
   pub fn readme_header_renew() -> Result< () >
   {
-    match action::readme_header_renew( AbsolutePath::try_from( std::env::current_dir()? )? )
+    match action::readme_header_renew
+    (
+      CrateDir::transitive_try_from::< AbsolutePath >( CurrentPath )?
+    )
     {
-      Ok( report ) => 
-      { 
+      Ok( report ) =>
+      {
         println!( "{report}" );
         Ok( () )
       }
diff --git a/module/move/willbe/src/command/publish.rs b/module/move/willbe/src/command/publish.rs
index ca085f3b31..dfc8bb4a61 100644
--- a/module/move/willbe/src/command/publish.rs
+++ b/module/move/willbe/src/command/publish.rs
@@ -5,7 +5,7 @@ mod private
   use colored::Colorize;
 
   use wca::VerifiedCommand;
-  use wtools::error::{ Result, for_app::Context };
+  use error::{ Result, untyped::Context };
   use former::Former;
   use std::fmt::Write;
   use channel::Channel;
@@ -27,18 +27,41 @@ mod private
 
   pub fn publish( o : VerifiedCommand ) -> Result< () >
   {
-    let args_line = format!( "{}", o.args.get_owned( 0 ).unwrap_or( std::path::PathBuf::from( "" ) ).display() );
-    let prop_line = format!( "{}", o.props.iter().map( | p | format!( "{}:{}", p.0, p.1.to_string() ) ).collect::< Vec< _ > >().join(" ") );
+    let args_line = format!
+    ( 
+      "{}", 
+      o
+      .args
+      .get_owned( 0 )
+      .unwrap_or( std::path::PathBuf::from( "" ) ).display() 
+    );
+    let prop_line = format!
+    ( 
+      "{}", 
+      o
+      .props
+      .iter()
+      .map( | p | format!( "{}:{}", p.0, p.1.to_string() ) )
+      .collect::< Vec< _ > >().join(" ") );
 
-    let patterns : Vec< _ > = o.args.get_owned( 0 ).unwrap_or_else( || vec![ "./".into() ] );
+    let patterns : Vec< _ > = o
+    .args
+    .get_owned( 0 )
+    .unwrap_or_else( || vec![ "./".into() ] );
 
-    let PublishProperties { channel, dry, temp } = o.props.try_into()?;
-    let plan = action::publish_plan( patterns, channel, dry, temp ).context( "Failed to plan the publication process" )?;
+    let PublishProperties 
+    { 
+      channel, 
+      dry, 
+      temp 
+    } = o.props.try_into()?;
+    let plan = action::publish_plan( patterns, channel, dry, temp )
+    .context( "Failed to plan the publication process" )?;
 
     let mut formatted_plan = String::new();
     writeln!( &mut formatted_plan, "Tree :" )?;
     plan.write_as_tree( &mut formatted_plan )?;
-    
+
     if !plan.plans.is_empty()
     {
       writeln!( &mut formatted_plan, "The following packages are pending for publication :" )?;
@@ -52,13 +75,14 @@ mod private
       {
         println!( "{report}" );
 
-        if dry && report.packages.iter().find( |( _, p )| p.publish_required ).is_some()
+        if dry && !report.packages.is_empty()
         {
           let args = if args_line.is_empty() { String::new() } else { format!(" {}", args_line) };
           let prop = if prop_line.is_empty() { String::new() } else { format!(" {}", prop_line) };
-          let line = format!("will .publish{}{} dry:0", args, prop);
-          println!("To apply plan, call the command `{}`", line.blue());
-          // qqq : for Petro : for Bohdan : bad. should be exact command with exact parameters
+          let line = format!("will .publish{}{} dry:0", args, prop );
+          println!("To apply plan, call the command `{}`", line.blue() );
+          // aaa : for Petro : for Bohdan : bad. should be exact command with exact parameters
+          // aaa : it`s already works
         }
 
         Ok( () )
@@ -73,14 +97,23 @@ mod private
 
   impl TryFrom< wca::Props > for PublishProperties
   {
-    type Error = wtools::error::for_app::Error;
+    type Error = error::untyped::Error;
     fn try_from( value : wca::Props ) -> Result< Self, Self::Error >
     {
       let mut this = Self::former();
 
-      this = if let Some( v ) = value.get_owned( "channel" ) { this.channel::< Channel >( { let v : String = v; Channel::try_from( v )? } ) } else { this };
-      this = if let Some( v ) = value.get_owned( "dry" ) { this.dry::< bool >( v ) } else { this };
-      this = if let Some( v ) = value.get_owned( "temp" ) { this.temp::< bool >( v ) } else { this };
+      this = if let Some( v ) = value
+      .get_owned( "channel" ) 
+      { 
+        this.channel::< Channel >( { let v : String = v; Channel::try_from( v )? } ) 
+      } 
+      else 
+      { this };
+      
+      this = if let Some( v ) = value
+      .get_owned( "dry" ) { this.dry::< bool >( v ) } else { this };
+      this = if let Some( v ) = value
+      .get_owned( "temp" ) { this.temp::< bool >( v ) } else { this };
 
       Ok( this.form() )
     }
diff --git a/module/move/willbe/src/command/publish_diff.rs b/module/move/willbe/src/command/publish_diff.rs
index 961ba818c4..d34d72968b 100644
--- a/module/move/willbe/src/command/publish_diff.rs
+++ b/module/move/willbe/src/command/publish_diff.rs
@@ -2,11 +2,13 @@ mod private
 {
   use crate::*;
 
+  use std::fs;
   use std::path::PathBuf;
   use wca::VerifiedCommand;
 
-  use wtools::error::Result;
-  use _path::AbsolutePath;
+  use error::Result;
+  // qqq : group dependencies
+  // use path::AbsolutePath;
 
   #[ derive( former::Former ) ]
   struct PublishDiffProperties
@@ -27,6 +29,8 @@ mod private
   /// # Errors
   ///
   /// Returns an error if there is an issue with the command.
+
+  // qqq : don't use 1-prameter Result
   pub fn publish_diff( o : VerifiedCommand ) -> Result< () >
   {
     let path : PathBuf = o.args.get_owned( 0 ).unwrap_or( std::env::current_dir()? );
@@ -40,7 +44,7 @@ mod private
     println!( "{}", action::publish_diff( o )? );
     if let Some( keep ) = keep_archive
     {
-      let keep = AbsolutePath::try_from( keep ).unwrap();
+      let keep = AbsolutePath::try_from( fs::canonicalize( keep )? ).unwrap();
       println!( "Remote version of the package was saved at `{}`", keep.as_ref().display() );
     }
 
@@ -49,12 +53,16 @@ mod private
 
   impl TryFrom< wca::Props > for PublishDiffProperties
   {
-    type Error = wtools::error::for_app::Error;
+    type Error = error::untyped::Error;
     fn try_from( value : wca::Props ) -> Result< Self, Self::Error >
     {
       let mut this = Self::former();
 
-      this = if let Some( v ) = value.get_owned( "keep_archive" ) { this.keep_archive::< PathBuf >( v ) } else { this };
+      this = if let Some( v ) = value
+      .get_owned( "keep_archive" )
+      { this.keep_archive::< PathBuf >( v ) }
+      else
+      { this };
 
       Ok( this.form() )
     }
diff --git a/module/move/willbe/src/command/readme_headers_renew.rs b/module/move/willbe/src/command/readme_headers_renew.rs
index d8b4edd5c5..015399ae9d 100644
--- a/module/move/willbe/src/command/readme_headers_renew.rs
+++ b/module/move/willbe/src/command/readme_headers_renew.rs
@@ -1,34 +1,35 @@
 mod private
 {
   use crate::*;
-  use _path::AbsolutePath;
+  // use path::AbsolutePath;
   use action;
-  use wtools::error::anyhow::Error;
-  use error_tools::{ Result, err };
+  // use error::untyped::Error;
+  use error::{ Result, err };
   use std::fmt::{ Display, Formatter };
 
   #[ derive( Debug, Default ) ]
   struct ReadmeHeadersRenewReport
   {
     main_header_renew_report : action::MainHeaderRenewReport,
-    main_header_renew_error : Option< Error >,
+    main_header_renew_error : Option< action::MainHeaderRenewError >, // aaa : for Petro : typed error // aaa : done
     modules_headers_renew_report : action::ModulesHeadersRenewReport,
-    modules_headers_renew_error : Option< Error >,
+    modules_headers_renew_error : Option< action::ModulesHeadersRenewError >, // aaa : for Petro : typed error // aaa : done
   }
 
   impl Display for ReadmeHeadersRenewReport
   {
     fn fmt( &self, f : &mut Formatter< '_ > ) -> std::fmt::Result
     {
-      match ( &self.main_header_renew_error, &self.modules_headers_renew_error ) 
-      { 
-        ( Some( main ), Some( modules ) ) => 
+      match ( &self.main_header_renew_error, &self.modules_headers_renew_error )
+      {
+        ( Some( main ), Some( modules ) ) =>
         {
           writeln!
-          ( 
-            f, 
-            "Main header renew report : \n{}\nError : \n{:?}\nModules headers renew report : \n{}\nError : \n{:?}",
-            self.main_header_renew_report, main, self.modules_headers_renew_report, modules 
+          (
+            f,
+            "Main header renew report : \
+{}\nError : \n{:?}\nModules headers renew report : \n{}\nError : \n{:?}",
+            self.main_header_renew_report, main, self.modules_headers_renew_report, modules
           )?;
         }
         ( Some( main ), None ) =>
@@ -36,7 +37,8 @@ mod private
           writeln!
           (
             f,
-            "Main header renew report : \n{}\nError : \n{:?}\nModules headers renew report : \n{}",
+            "Main header renew report : \
+{}\nError : \n{:?}\nModules headers renew report : \n{}",
             self.main_header_renew_report, main, self.modules_headers_renew_report
           )?;
         }
@@ -45,7 +47,8 @@ mod private
           writeln!
           (
             f,
-            "Main header renew report : \n{}\nModules headers renew report : \n{}\nError : \n{:?}\n",
+            "Main header renew report : \
+{}\nModules headers renew report : \n{}\nError : \n{:?}\n",
             self.main_header_renew_report, self.modules_headers_renew_report, modules
           )?;
         }
@@ -62,29 +65,30 @@ mod private
       Ok( () )
     }
   }
-  
+
 
   /// Aggregates two commands: `generate_modules_headers` & `generate_main_header`
   pub fn readme_headers_renew() -> Result< () >
   {
     let mut report = ReadmeHeadersRenewReport::default();
-    let absolute_path = AbsolutePath::try_from( std::env::current_dir()? )?;
+    // let absolute_path = AbsolutePath::try_from( std::env::current_dir()? )?;
+    let crate_dir = CrateDir::transitive_try_from::< AbsolutePath >( CurrentPath )?;
     let mut fail = false;
-    
-    match action::readme_header_renew( absolute_path.clone() ) 
+
+    match action::readme_header_renew( crate_dir.clone() )
     {
-      Ok( r ) => 
+      Ok( r ) =>
       {
         report.main_header_renew_report = r;
       }
-      Err( ( r, error ) ) => 
+      Err( ( r, error ) ) =>
       {
         fail = true;
         report.main_header_renew_report = r;
-        report.main_header_renew_error = Some( Error::from( error ) );
+        report.main_header_renew_error = Some( error );
       }
     };
-    match action::readme_modules_headers_renew( absolute_path )
+    match action::readme_modules_headers_renew( crate_dir )
     {
       Ok( r ) =>
       {
@@ -94,10 +98,10 @@ mod private
       {
         fail = true;
         report.modules_headers_renew_report = r;
-        report.modules_headers_renew_error = Some( Error::from( error ) );
+        report.modules_headers_renew_error = Some(  error );
       }
     }
-    
+
     if fail
     {
       eprintln!( "{report}" );
diff --git a/module/move/willbe/src/command/readme_health_table_renew.rs b/module/move/willbe/src/command/readme_health_table_renew.rs
index 945490062f..a1b100dd4b 100644
--- a/module/move/willbe/src/command/readme_health_table_renew.rs
+++ b/module/move/willbe/src/command/readme_health_table_renew.rs
@@ -2,14 +2,18 @@ mod private
 {
   use crate::*;
 
-  use wtools::error::{ for_app::Context, Result };
+  use error::{ untyped::Context, Result };
 
   ///
   /// Generate table.
   ///
   pub fn readme_health_table_renew() -> Result< () >
   {
-    action::readme_health_table_renew( &std::env::current_dir()? ).context( "Fail to create table" )
+    action::readme_health_table_renew
+    ( 
+      &std::env::current_dir()? 
+    )
+    .context( "Fail to create table" )
   }
 }
 
diff --git a/module/move/willbe/src/command/readme_modules_headers_renew.rs b/module/move/willbe/src/command/readme_modules_headers_renew.rs
index e959c12365..f71e4cf916 100644
--- a/module/move/willbe/src/command/readme_modules_headers_renew.rs
+++ b/module/move/willbe/src/command/readme_modules_headers_renew.rs
@@ -1,20 +1,20 @@
 mod private
 {
   use crate::*;
-  use _path::AbsolutePath;
-  use wtools::error::{ for_app::Error, Result };
+  // use path::AbsolutePath;
+  use error::{ untyped::Error, Result };
 
   /// Generate headers for workspace members
   pub fn readme_modules_headers_renew() -> Result< () >
   {
-    match action::readme_modules_headers_renew( AbsolutePath::try_from( std::env::current_dir()? )? ) 
+    match action::readme_modules_headers_renew( CrateDir::transitive_try_from::< AbsolutePath >( CurrentPath )? )
     {
-      Ok( report ) => 
+      Ok( report ) =>
       {
         println!( "{report}" );
         Ok( () )
       }
-      Err( ( report, e ) ) => 
+      Err( ( report, e ) ) =>
       {
         eprintln!( "{report}" );
         Err( Error::from( e ).context( "Fail to generate modules headers." ) )
diff --git a/module/move/willbe/src/command/test.rs b/module/move/willbe/src/command/test.rs
index 25019344fb..0a65952d20 100644
--- a/module/move/willbe/src/command/test.rs
+++ b/module/move/willbe/src/command/test.rs
@@ -3,16 +3,17 @@ mod private
 {
   use crate::*;
 
-  use std::collections::HashSet;
-  use std::path::PathBuf;
+  use collection::HashSet;
+  use std::fs;
   use colored::Colorize;
   use wca::VerifiedCommand;
-  use wtools::error::Result;
-  use _path::AbsolutePath;
+  use error::Result;
+  // qqq : group dependencies
+  use path::{ AbsolutePath, PathBuf };
   use action::test::TestsCommandOptions;
   use former::Former;
   use channel::Channel;
-  use error_tools::for_app::bail;
+  use error::untyped::bail;
   use optimization::Optimization;
 
   #[ derive( Former, Debug ) ]
@@ -47,13 +48,30 @@ mod private
   }
 
   /// run tests in specified crate
+  // qqq : don't use 1-prameter Result
   pub fn test( o : VerifiedCommand ) -> Result< () >
   {
-    let args_line = format!( "{}", o.args.get_owned( 0 ).unwrap_or( std::path::PathBuf::from( "" ) ).display() );
-    let prop_line = format!( "{}", o.props.iter().map( | p | format!( "{}:{}", p.0, p.1.to_string() ) ).collect::< Vec< _ > >().join(" ") );
+    let args_line = format!
+    (
+      "{}",
+      o
+      .args
+      .get_owned( 0 )
+      .unwrap_or( std::path::PathBuf::from( "" ) )
+      .display()
+    );
+    let prop_line = format!
+    (
+      "{}",
+      o
+      .props
+      .iter()
+      .map( | p | format!( "{}:{}", p.0, p.1.to_string() ) )
+      .collect::< Vec< _ > >().join(" ")
+    );
 
     let path : PathBuf = o.args.get_owned( 0 ).unwrap_or_else( || "./".into() );
-    let path = AbsolutePath::try_from( path )?;
+    let path = AbsolutePath::try_from( fs::canonicalize( path )? )?;
     let TestsProperties
     {
       dry,
@@ -68,7 +86,7 @@ mod private
       with_all_features,
       with_none_features,
       with_debug,
-      with_release, 
+      with_release,
       with_progress
     } = o.props.try_into()?;
 
@@ -82,7 +100,8 @@ mod private
 
     if optimizations.is_empty()
     {
-      bail!( "Cannot run tests if with_debug and with_release are both false. Set at least one of them to true." );
+      bail!( "Cannot run tests if with_debug and with_release are both false. \
+Set at least one of them to true." );
     }
 
 
@@ -103,7 +122,7 @@ mod private
 
     match action::test( args, dry )
     {
-      
+
       Ok( report ) =>
       {
         if dry
@@ -113,11 +132,11 @@ mod private
           let line = format!("will .publish{}{} dry:0", args, prop);
           println!("To apply plan, call the command `{}`", line.blue());
         }
-        else 
-        { 
+        else
+        {
           println!( "{report} ");
         }
-        
+
         Ok( () )
       }
       Err( ( report, e ) ) =>
@@ -130,25 +149,39 @@ mod private
 
   impl TryFrom< wca::Props > for TestsProperties
   {
-    type Error = wtools::error::for_app::Error;
+    type Error = error::untyped::Error;
     fn try_from( value : wca::Props ) -> Result< Self, Self::Error >
     {
       let mut this = Self::former();
 
-      this = if let Some( v ) = value.get_owned( "dry" ) { this.dry::< bool >( v ) } else { this };
-      this = if let Some( v ) = value.get_owned( "temp" ) { this.temp::< bool >( v ) } else { this };
-      this = if let Some( v ) = value.get_owned( "with_stable" ) { this.with_stable::< bool >( v ) } else { this };
-      this = if let Some( v ) = value.get_owned( "with_nightly" ) { this.with_nightly::< bool >( v ) } else { this };
-      this = if let Some( v ) = value.get_owned( "concurrent" ) { this.concurrent::< u32 >( v ) } else { this };
-      this = if let Some( v ) = value.get_owned( "power" ) { this.power::< u32 >( v ) } else { this };
-      this = if let Some( v ) = value.get_owned( "include" ) { this.include::< Vec< String > >( v ) } else { this };
-      this = if let Some( v ) = value.get_owned( "exclude" ) { this.exclude::< Vec< String > >( v ) } else { this };
-      this = if let Some( v ) = value.get_owned( "with_debug" ) { this.with_debug::< bool >( v ) } else { this };
-      this = if let Some( v ) = value.get_owned( "with_release" ) { this.with_release::< bool >( v ) } else { this };
-      this = if let Some( v ) = value.get_owned( "with_all_features" ) { this.with_all_features::< bool >( v ) } else { this };
-      this = if let Some( v ) = value.get_owned( "with_none_features" ) { this.with_none_features::< bool >( v ) } else { this };
-      this = if let Some( v ) = value.get_owned( "always" ) { this.enabled_features::< Vec< String > >( v ) } else { this };
-      this = if let Some( v ) = value.get_owned( "with_progress" ) { this.with_progress::< bool >( v ) } else { this };
+      this = if let Some( v ) = value
+      .get_owned( "dry" ) { this.dry::< bool >( v ) } else { this };
+      this = if let Some( v ) = value
+      .get_owned( "temp" ) { this.temp::< bool >( v ) } else { this };
+      this = if let Some( v ) = value
+      .get_owned( "with_stable" ) { this.with_stable::< bool >( v ) } else { this };
+      this = if let Some( v ) = value
+      .get_owned( "with_nightly" ) { this.with_nightly::< bool >( v ) } else { this };
+      this = if let Some( v ) = value
+      .get_owned( "concurrent" ) { this.concurrent::< u32 >( v ) } else { this };
+      this = if let Some( v ) = value
+      .get_owned( "power" ) { this.power::< u32 >( v ) } else { this };
+      this = if let Some( v ) = value
+      .get_owned( "include" ) { this.include::< Vec< String > >( v ) } else { this };
+      this = if let Some( v ) = value
+      .get_owned( "exclude" ) { this.exclude::< Vec< String > >( v ) } else { this };
+      this = if let Some( v ) = value
+      .get_owned( "with_debug" ) { this.with_debug::< bool >( v ) } else { this };
+      this = if let Some( v ) = value
+      .get_owned( "with_release" ) { this.with_release::< bool >( v ) } else { this };
+      this = if let Some( v ) = value
+      .get_owned( "with_all_features" ) { this.with_all_features::< bool >( v ) } else { this };
+      this = if let Some( v ) = value
+      .get_owned( "with_none_features" ) { this.with_none_features::< bool >( v ) } else { this };
+      this = if let Some( v ) = value
+      .get_owned( "always" ) { this.enabled_features::< Vec< String > >( v ) } else { this };
+      this = if let Some( v ) = value
+      .get_owned( "with_progress" ) { this.with_progress::< bool >( v ) } else { this };
 
       Ok( this.form() )
     }
diff --git a/module/move/willbe/src/command/workspace_renew.rs b/module/move/willbe/src/command/workspace_renew.rs
index 26cc520bf4..ea28f5d631 100644
--- a/module/move/willbe/src/command/workspace_renew.rs
+++ b/module/move/willbe/src/command/workspace_renew.rs
@@ -4,7 +4,7 @@ mod private
   use former::Former;
 
   use wca::VerifiedCommand;
-  use wtools::error::{ anyhow::Context, Result };
+  use error::{ untyped::Context, Result };
   use action::WorkspaceTemplate;
 
   #[ derive( Former ) ]
@@ -22,19 +22,28 @@ mod private
   {
     let WorkspaceNewProperties { repository_url, branches } = o.props.try_into()?;
     let template = WorkspaceTemplate::default();
-    action::workspace_renew( &std::env::current_dir()?, template, repository_url, branches ).context( "Fail to create workspace" )
+    action::workspace_renew
+    ( 
+      &std::env::current_dir()?, 
+      template, 
+      repository_url, 
+      branches 
+    )
+    .context( "Fail to create workspace" )
   }
 
   impl TryFrom< wca::Props > for WorkspaceNewProperties
   {
-    type Error = wtools::error::for_app::Error;
+    type Error = error::untyped::Error;
 
     fn try_from( value : wca::Props ) -> std::result::Result< Self, Self::Error >
     {
       let mut this = Self::former();
 
-      this = if let Some( v ) = value.get_owned( "repository_url" ) { this.repository_url::< String >( v ) } else { this };
-      this = if let Some( v ) = value.get_owned( "branches" ) { this.branches::< Vec< String > >( v ) } else { this };
+      this = if let Some( v ) = value
+      .get_owned( "repository_url" ) { this.repository_url::< String >( v ) } else { this };
+      this = if let Some( v ) = value
+      .get_owned( "branches" ) { this.branches::< Vec< String > >( v ) } else { this };
 
       Ok( this.form() )
     }
diff --git a/module/move/willbe/src/entity/channel.rs b/module/move/willbe/src/entity/channel.rs
index a266890aab..57e1eede8a 100644
--- a/module/move/willbe/src/entity/channel.rs
+++ b/module/move/willbe/src/entity/channel.rs
@@ -4,12 +4,11 @@ mod private
   use std::
   {
     fmt::Formatter,
-    path::Path,
-    collections::HashSet,
+    ffi::OsString,
   };
-  use std::ffi::OsString;
-  use error_tools::for_app::Error;
-  use wtools::error::Result;
+  use path::Path;
+  use collection::HashSet;
+  use error::untyped::{ Error, Result };
   use process_tools::process::*;
 
   /// The `Channel` enum represents different release channels for rust.
@@ -34,17 +33,17 @@ mod private
       }
     }
   }
-  
+
   impl TryFrom< String > for Channel
   {
-    type Error = error::for_app::Error;
+    type Error = error::untyped::Error;
     fn try_from( value : String ) -> Result< Self, Self::Error >
     {
       Ok( match value.as_ref()
       {
         "stable" => Self::Stable,
         "nightly" => Self::Nightly,
-        other => error::for_app::bail!( "Unexpected channel value. Expected [stable, channel]. Got: `{other}`" ),
+        other => error::untyped::bail!( "Unexpected channel value. Expected [stable, channel]. Got: `{other}`" ),
       })
     }
   }
diff --git a/module/move/willbe/src/entity/code.rs b/module/move/willbe/src/entity/code.rs
new file mode 100644
index 0000000000..5c8418bad8
--- /dev/null
+++ b/module/move/willbe/src/entity/code.rs
@@ -0,0 +1,43 @@
+mod private
+{
+  use crate::*;
+
+  use std::
+  {
+    borrow::Cow,
+  };
+
+  /// A trait for converting an object to its code representation.
+  ///
+  /// The `AsCode` trait defines a method for converting an object into a code representation,
+  /// typically as a string. This can be useful for generating code from various data structures
+  /// or objects.
+  ///
+  /// ```
+  pub trait AsCode
+  {
+    /// Converts the object to its code representation.
+    fn as_code< 'a >( &'a self ) -> std::io::Result< Cow< 'a, str > >;
+  }
+
+  /// A trait for retrieving an iterator over items of a source file.
+  ///
+  /// The `CodeItems` trait is used to represent objects that can provide an iterator over their
+  /// contained source files. This is useful in scenarios where you need to access or process
+  /// all source files associated with an object, such as a workspace or a package.
+  pub trait CodeItems
+  {
+    /// Returns an iterator over the source files.
+    fn items( &self ) -> impl IterTrait< '_, syn::Item >;
+  }
+}
+
+//
+
+crate::mod_interface!
+{
+
+  exposed use AsCode;
+  exposed use CodeItems;
+
+}
diff --git a/module/move/willbe/src/entity/dependency.rs b/module/move/willbe/src/entity/dependency.rs
new file mode 100644
index 0000000000..d3e807f374
--- /dev/null
+++ b/module/move/willbe/src/entity/dependency.rs
@@ -0,0 +1,285 @@
+mod private
+{
+
+  use crate::*;
+
+  // use crates_tools::CrateArchive;
+  // use workspace::Workspace;
+  use error::
+  {
+    // untyped::Result,
+    // typed::Error,
+    untyped::format_err,
+  };
+
+  /// A dependency of the main crate
+  #[ derive( Debug, Clone, Copy ) ]
+  #[ repr( transparent ) ]
+  pub struct DependencyRef< 'a >
+  {
+    inner : &'a cargo_metadata::Dependency,
+  }
+
+  impl< 'a > DependencyRef< 'a >
+  {
+
+    /// The file system path for a local path dependency.
+    /// Only produced on cargo 1.51+
+    pub fn crate_dir( &self ) -> Option< CrateDir >
+    {
+      match &self.inner.path
+      {
+        Some( path ) => path.as_path().try_into().ok(),
+        None => None,
+      }
+    }
+
+    /// Name as given in the Cargo.toml.
+    pub fn name( &self ) -> String
+    {
+      self.inner.name.clone()
+    }
+
+    /// The kind of dependency this is.
+    pub fn kind( &self ) -> DependencyKind
+    {
+      match self.inner.kind
+      {
+        cargo_metadata::DependencyKind::Normal => DependencyKind::Normal,
+        cargo_metadata::DependencyKind::Development => DependencyKind::Development,
+        cargo_metadata::DependencyKind::Build => DependencyKind::Build,
+        cargo_metadata::DependencyKind::Unknown => DependencyKind::Unknown,
+      }
+    }
+
+    /// Required version
+    pub fn req( &self ) -> semver::VersionReq
+    {
+      self.inner.req.clone()
+    }
+  }
+
+  impl< 'a > From< &'a cargo_metadata::Dependency > for DependencyRef< 'a >
+  {
+    #[ inline( always ) ]
+    fn from( inner : &'a cargo_metadata::Dependency ) -> Self
+    {
+      Self { inner }
+    }
+  }
+
+  /// Dependencies can come in three kinds
+  #[ derive( Eq, PartialEq, Debug, Clone, Copy ) ]
+  pub enum DependencyKind
+  {
+    /// The 'normal' kind
+    Normal,
+    /// Those used in tests only
+    Development,
+    /// Those used in build scripts only
+    Build,
+    /// The 'unknown' kind
+    Unknown,
+  }
+
+  //
+
+  /// Identifier of any crate (local and remote).
+  #[ derive( Debug, Clone, Hash, Eq, PartialEq ) ]
+  pub struct CrateId
+  {
+    /// The name of the crate.
+    pub name : String, // qqq : that should be Arc< str >
+    /// The absolute path to the crate, if available.
+    pub crate_dir : Option< CrateDir >, // qqq : that should be Option< Arc< CrateDir > >
+    // pub path : Option< AbsolutePath >,
+  }
+
+  impl< 'a > From< &WorkspacePackageRef< 'a > > for CrateId
+  {
+    fn from( value : &WorkspacePackageRef< 'a > ) -> Self
+    {
+      Self
+      {
+        name : value.name().into(),
+        crate_dir : Some( value.crate_dir().unwrap() )
+        // path : Some( AbsolutePath::try_from( value.manifest_file().parent().unwrap() ).unwrap() ),
+      }
+    }
+  }
+
+  impl From< &DependencyRef< '_ > > for CrateId
+  {
+    fn from( value : &DependencyRef< '_ > ) -> Self
+    {
+      Self
+      {
+        name : value.name().into(),
+        crate_dir : value.crate_dir(),
+        // path : value.path().clone().map( | path | AbsolutePath::try_from( path ).unwrap() ),
+      }
+    }
+  }
+
+  /// Sorting variants for dependencies.
+  #[ derive( Debug, Copy, Clone ) ]
+  pub enum DependenciesSort
+  {
+    /// List will be topologically sorted.
+    Topological,
+    /// List will be unsorted.
+    Unordered,
+  }
+
+  #[ derive( Debug, Clone ) ]
+  /// Args for `local_dependencies` function.
+  pub struct DependenciesOptions
+  {
+    /// With dependencies of dependencies.
+    pub recursive : bool,
+    /// With sorting.
+    pub sort : DependenciesSort,
+    /// Include dev dependencies.
+    pub with_dev : bool,
+    /// Include remote dependencies.
+    pub with_remote : bool,
+  }
+
+  impl Default for DependenciesOptions
+  {
+    fn default() -> Self
+    {
+      Self
+      {
+        recursive : true,
+        sort : DependenciesSort::Unordered,
+        with_dev : false,
+        with_remote : false,
+      }
+    }
+  }
+
+  // qqq : for Bohdan : poor description
+  /// Recursive implementation of the `list` function
+  pub fn _list< 'a >
+  (
+    workspace : &Workspace, // aaa : for Bohdan : no mut // aaa : no mut
+    package : &Package< 'a >,
+    graph : &mut collection::HashMap< CrateId, collection::HashSet< CrateId > >,
+    opts : DependenciesOptions
+  )
+  -> Result< CrateId >
+  {
+    let DependenciesOptions
+    {
+      recursive,
+      sort : _,
+      with_dev,
+      with_remote,
+    } = opts;
+    if recursive && with_remote { unimplemented!( "`recursive` + `with_remote` options") }
+
+    let manifest_file = &package.manifest_file();
+
+    let package = workspace
+    .package_find_by_manifest( &manifest_file )
+    .ok_or( format_err!( "Package not found in the workspace with path : `{}`", manifest_file.as_ref().display() ) )?;
+
+    let deps : collection::HashSet< _ > = package
+    .dependencies()
+    // .iter()
+    .filter( | dep | ( with_remote || dep.crate_dir().is_some() ) && ( with_dev || dep.kind() != DependencyKind::Development ) )
+    .map( | dep | CrateId::from( &dep ) )
+    .collect();
+
+    let package = CrateId::from( &package );
+    graph.insert( package.clone(), deps.clone() );
+
+    if recursive
+    {
+      for dep in deps
+      {
+        if graph.get( &dep ).is_none()
+        {
+          // unwrap because `recursive` + `with_remote` not yet implemented
+          _list
+          (
+            workspace,
+            &dep.crate_dir.unwrap().try_into()?,
+            // &dep.path.as_ref().unwrap().join( "Cargo.toml" ).try_into().unwrap(),
+            graph,
+            opts.clone(),
+          )?;
+        }
+      }
+    }
+
+    Ok( package )
+  }
+
+  /// Returns local dependencies of a specified package by its package path from a workspace.
+  ///
+  /// # Arguments
+  ///
+  /// - `workspace` - holds cached information about the workspace, such as the packages it contains and their dependencies. By passing it as a mutable reference, function can update the cache as needed.
+  /// - `package` - The package package file contains package about the package such as its name, version, and dependencies.
+  /// - `opts` - used to specify options or configurations for fetching local dependencies.
+  ///
+  /// # Returns
+  ///
+  /// If the operation is successful, returns a vector of `PathBuf` objects, where each `PathBuf` represents the path to a local dependency of the specified package.
+  // qqq : typed error?
+  pub fn list< 'a >
+  (
+    workspace : &mut Workspace,
+    package : &Package< 'a >,
+    opts : DependenciesOptions
+  )
+  -> Result< Vec< CrateId > >
+  {
+    let mut graph = collection::HashMap::new();
+    let root = _list( workspace, package, &mut graph, opts.clone() )?;
+
+    let output = match opts.sort
+    {
+      DependenciesSort::Unordered =>
+      {
+        graph
+        .into_iter()
+        .flat_map( | ( id, dependency ) |
+        {
+          dependency
+          .into_iter()
+          .chain( Some( id ) )
+        })
+        .unique()
+        .filter( | x | x != &root )
+        .collect()
+      }
+      DependenciesSort::Topological =>
+      {
+        // qqq : too long line
+        graph::toposort( graph::construct( &graph ) ).map_err( | err | format_err!( "{}", err ) )?.into_iter().filter( | x | x != &root ).collect()
+      },
+    };
+
+    Ok( output )
+  }
+
+}
+
+//
+
+crate::mod_interface!
+{
+
+  exposed use DependencyRef;
+  exposed use DependencyKind;
+
+  protected use CrateId;
+  protected use DependenciesSort;
+  protected use DependenciesOptions;
+  protected use _list;
+  protected use list;
+
+}
diff --git a/module/move/willbe/src/entity/diff.rs b/module/move/willbe/src/entity/diff.rs
index 49ef63b29a..7ddd7f65f1 100644
--- a/module/move/willbe/src/entity/diff.rs
+++ b/module/move/willbe/src/entity/diff.rs
@@ -4,17 +4,17 @@ mod private
 
   use std::
   {
-    collections::HashSet,
     fmt::Formatter,
-    path::PathBuf,
   };
-  use std::collections::HashMap;
+  use path::PathBuf;
+  use collection::HashMap;
   use colored::Colorize;
   use crates_tools::CrateArchive;
-  use similar::*;
+  use collection::HashSet;
+  use similar::{ TextDiff, ChangeTag };
+
+  // use similar::*; // qqq : for Bohdan : bad
 
-  use wtools::iter::Itertools;
-  
   /// These files are ignored because they can be safely changed without affecting functionality
   ///
   /// - `.cargo_vcs_info.json` - contains the git sha1 hash that varies between different commits
@@ -78,7 +78,7 @@ mod private
       Is : Into< HashSet< I > >,
       I : AsRef< std::path::Path >,
     {
-      let current = self.0.keys().cloned().collect::< HashSet< _ > >();
+      let current : HashSet< _ > = self.0.keys().cloned().collect();
       let Some( key ) = current.iter().next() else { return self };
 
       let crate_part = std::path::Path::new( key.components().next().unwrap().as_os_str() );
diff --git a/module/move/willbe/src/entity/features.rs b/module/move/willbe/src/entity/features.rs
index 54f38b2d22..1e4b80746a 100644
--- a/module/move/willbe/src/entity/features.rs
+++ b/module/move/willbe/src/entity/features.rs
@@ -1,12 +1,9 @@
 mod private
 {
   use crate::*;
-  use std::collections::{ BTreeSet, HashSet };
-  // aaa : for Petro : don't use cargo_metadata and Package directly, use facade
-  // aaa : ✅
-  use error_tools::for_app::{ bail, Result };
-  use wtools::iter::Itertools;
-  use workspace::WorkspacePackage;
+  use collection::{ BTreeSet, HashSet };
+  use error::untyped::{ bail, Result };
+  use iter::Itertools;
 
   /// Generates a powerset of the features available in the given `package`,
   /// filtered according to specified inclusion and exclusion criteria,
@@ -42,12 +39,9 @@ mod private
   /// // Use `feature_combinations` as needed.
   /// ```
 
-  // aaa : for Petro : bad, don't use ignore with need
-  // aaa : I have to ignore this test because the function accepts &Package as input, and to mock it requires a lot of lines
-
   pub fn features_powerset
   (
-    package : &WorkspacePackage,
+    package : WorkspacePackageRef< '_ >,
     power : usize,
     exclude_features : &[ String ],
     include_features : &[ String ],
@@ -109,14 +103,14 @@ mod private
     with_none_features : bool,
     enabled_features : &[ String ],
     total_features : usize
-  ) 
-    -> usize 
+  )
+    -> usize
   {
     let mut estimate = 0;
     let mut binom = 1;
     let power = power.min( n );
 
-    for k in 0..=power 
+    for k in 0..=power
     {
       estimate += binom;
       binom = binom * ( n - k ) / ( k + 1 );
@@ -125,13 +119,13 @@ mod private
     if with_all_features { estimate += 1; }
     if with_none_features { estimate += 1; }
 
-    if !enabled_features.is_empty() 
+    if !enabled_features.is_empty()
     {
       let len = enabled_features.len();
-      let combinations = ( 0..=len.min( total_features ) ).map( | k | 
+      let combinations = ( 0..=len.min( total_features ) ).map( | k |
       {
         let mut binom = 1;
-        for i in 0..k 
+        for i in 0..k
         {
           binom = binom * ( len - i ) / ( i + 1 );
         }
diff --git a/module/move/willbe/src/entity/files.rs b/module/move/willbe/src/entity/files.rs
new file mode 100644
index 0000000000..96efecf308
--- /dev/null
+++ b/module/move/willbe/src/entity/files.rs
@@ -0,0 +1,54 @@
+/// Internal namespace.
+pub( crate ) mod private
+{
+  use crate::*;
+
+  use std::
+  {
+    io,
+  };
+  use error::
+  {
+    typed::Error,
+  };
+
+  /// `PathError` enum represents errors when creating a `CrateDir` object.
+  #[ derive( Debug, Error ) ]
+  pub enum PathError
+  {
+    /// Indicates a validation error with a descriptive message.
+    #[ error( "Failed to create a `CrateDir` object due to `{0}`" ) ]
+    Validation( String ),
+    /// Try to read or write
+    #[ error( "IO operation failed. Details : {0}" ) ]
+    Io( #[ from ] io::Error ),
+  }
+
+}
+
+//
+
+mod crate_dir;
+mod manifest_file;
+mod source_file;
+mod either;
+
+//
+
+crate::mod_interface!
+{
+  exposed use super::
+  {
+    crate_dir::CrateDir,
+    manifest_file::ManifestFile,
+    source_file::
+    {
+      SourceFile,
+      Entries,
+      Sources,
+      // Items,
+    },
+    either::EitherDirOrFile
+  };
+  exposed use PathError;
+}
diff --git a/module/move/willbe/src/entity/files/crate_dir.rs b/module/move/willbe/src/entity/files/crate_dir.rs
new file mode 100644
index 0000000000..1c0165947b
--- /dev/null
+++ b/module/move/willbe/src/entity/files/crate_dir.rs
@@ -0,0 +1,259 @@
+use crate::*;
+
+use entity::
+{
+  PathError,
+  ManifestFile,
+};
+use core::
+{
+  fmt,
+  ops::
+  {
+    Deref,
+    DerefMut,
+  },
+};
+use std::
+{
+  path::{ Path, PathBuf },
+  io,
+};
+use error::
+{
+  Result,
+};
+use path::{ AbsolutePath, Utf8Path, Utf8PathBuf };
+
+/// Path to crate directory
+#[ derive( Clone, Ord, PartialOrd, Eq, PartialEq, Hash ) ]
+pub struct CrateDir( AbsolutePath );
+
+impl CrateDir
+{
+
+  /// Returns inner type which is an absolute path.
+  #[ inline( always ) ]
+  pub fn absolute_path( self ) -> AbsolutePath
+  {
+    self.0
+  }
+
+  /// Returns path to manifest aka cargo file.
+  #[ inline( always ) ]
+  pub fn manifest_file( self ) -> ManifestFile
+  {
+    self.into()
+  }
+
+}
+
+impl fmt::Display for CrateDir
+{
+  fn fmt( &self, f : &mut fmt::Formatter<'_> ) -> fmt::Result
+  {
+    write!( f, "{}", self.0.display() )
+  }
+}
+
+impl fmt::Debug for CrateDir
+{
+  fn fmt( &self, f : &mut fmt::Formatter<'_> ) -> fmt::Result
+  {
+    write!( f, "crate dir :: {}", self.0.display() )
+  }
+}
+
+impl From< ManifestFile > for CrateDir
+{
+  fn from( src : ManifestFile ) -> Self
+  {
+    Self ( src.inner().parent().unwrap() )
+  }
+}
+
+impl From< CrateDir > for AbsolutePath
+{
+  fn from( src : CrateDir ) -> Self
+  {
+    src.absolute_path()
+  }
+}
+
+impl From< CrateDir > for PathBuf
+{
+  fn from( src : CrateDir ) -> Self
+  {
+    src.absolute_path().inner()
+  }
+}
+
+impl< 'a > TryFrom< &'a CrateDir > for &'a str
+{
+  type Error = std::io::Error;
+  fn try_from( src : &'a CrateDir ) -> Result< &'a str, Self::Error >
+  {
+    ( &src.0 ).try_into()
+  }
+}
+
+impl TryFrom< &CrateDir > for String
+{
+  type Error = std::io::Error;
+  fn try_from( src : &CrateDir ) -> Result< String, Self::Error >
+  {
+    let src2 : &str = src.try_into()?;
+    Ok( src2.into() )
+  }
+}
+
+// impl< IntoPath : TryInto< PathBuf > > TryFrom< ( IntoPath, ) >
+// for CrateDir
+// where
+//   PathError : From< < IntoPath as TryInto< PathBuf > >::Error >,
+// {
+//   type Error = PathError;
+//
+//   #[ inline( always ) ]
+//   fn try_from( ( crate_dir_path, ) : ( IntoPath, ) ) -> Result< Self, Self::Error >
+//   {
+//     Self::try_from( AbsolutePath::try_from( crate_dir_path.try_into()? )? )
+//   }
+// }
+
+impl TryFrom< &AbsolutePath > for CrateDir
+{
+  type Error = PathError;
+
+  #[ inline( always ) ]
+  fn try_from( crate_dir_path : &AbsolutePath ) -> Result< Self, Self::Error >
+  {
+    crate_dir_path.clone().try_into()
+  }
+}
+
+impl TryFrom< AbsolutePath > for CrateDir
+{
+  type Error = PathError;
+
+  #[ inline( always ) ]
+  fn try_from( crate_dir_path : AbsolutePath ) -> Result< Self, Self::Error >
+  {
+    if !crate_dir_path.as_ref().join( "Cargo.toml" ).is_file()
+    {
+      let err =  io::Error::new( io::ErrorKind::InvalidData, format!( "Cannot find crate dir at {crate_dir_path:?}" ) );
+      return Err( PathError::Io( err ) );
+    }
+    Ok( Self( crate_dir_path ) )
+  }
+}
+
+impl TryFrom< &PathBuf > for CrateDir
+{
+  type Error = PathError;
+
+  #[ inline( always ) ]
+  fn try_from( crate_dir_path : &PathBuf ) -> Result< Self, Self::Error >
+  {
+    Self::try_from( AbsolutePath::try_from( crate_dir_path )? )
+  }
+}
+
+impl TryFrom< PathBuf > for CrateDir
+{
+  type Error = PathError;
+
+  #[ inline( always ) ]
+  fn try_from( crate_dir_path : PathBuf ) -> Result< Self, Self::Error >
+  {
+    Self::try_from( AbsolutePath::try_from( crate_dir_path )? )
+  }
+}
+
+impl TryFrom< &Path > for CrateDir
+{
+  type Error = PathError;
+
+  #[ inline( always ) ]
+  fn try_from( crate_dir_path : &Path ) -> Result< Self, Self::Error >
+  {
+    Self::try_from( AbsolutePath::try_from( crate_dir_path )? )
+  }
+}
+
+impl TryFrom< &str > for CrateDir
+{
+  type Error = PathError;
+
+  #[ inline( always ) ]
+  fn try_from( crate_dir_path : &str ) -> Result< Self, Self::Error >
+  {
+    Self::try_from( AbsolutePath::try_from( crate_dir_path )? )
+  }
+}
+
+impl TryFrom< Utf8PathBuf > for CrateDir
+{
+  type Error = PathError;
+
+  #[ inline( always ) ]
+  fn try_from( crate_dir_path : Utf8PathBuf ) -> Result< Self, Self::Error >
+  {
+    Self::try_from( AbsolutePath::try_from( crate_dir_path )? )
+  }
+}
+
+impl TryFrom< &Utf8PathBuf > for CrateDir
+{
+  type Error = PathError;
+
+  #[ inline( always ) ]
+  fn try_from( crate_dir_path : &Utf8PathBuf ) -> Result< Self, Self::Error >
+  {
+    Self::try_from( AbsolutePath::try_from( crate_dir_path )? )
+  }
+}
+
+impl TryFrom< &Utf8Path > for CrateDir
+{
+  type Error = PathError;
+
+  #[ inline( always ) ]
+  fn try_from( crate_dir_path : &Utf8Path ) -> Result< Self, Self::Error >
+  {
+    Self::try_from( AbsolutePath::try_from( crate_dir_path )? )
+  }
+}
+
+impl AsRef< Path > for CrateDir
+{
+  fn as_ref( &self ) -> &Path
+  {
+    self.0.as_ref()
+  }
+}
+
+impl AsMut< Path > for CrateDir
+{
+  fn as_mut( &mut self ) -> &mut Path
+  {
+    self.0.as_mut()
+  }
+}
+
+impl Deref for CrateDir
+{
+  type Target = AbsolutePath;
+  fn deref( &self ) -> &Self::Target
+  {
+    &self.0
+  }
+}
+
+impl DerefMut for CrateDir
+{
+  fn deref_mut( &mut self ) -> &mut Self::Target
+  {
+    &mut self.0
+  }
+}
diff --git a/module/move/willbe/src/entity/files/either.rs b/module/move/willbe/src/entity/files/either.rs
new file mode 100644
index 0000000000..922110964e
--- /dev/null
+++ b/module/move/willbe/src/entity/files/either.rs
@@ -0,0 +1,90 @@
+use crate::*;
+use core::
+{
+  ops::
+  {
+    Deref,
+    DerefMut,
+  },
+};
+use std::
+{
+  path::Path,
+};
+use error::
+{
+  Result,
+};
+
+/// Wrapper over `data_type::Either< CrateDir, ManifestFile >` with utils methods.
+#[ derive( Clone, Ord, PartialOrd, Eq, PartialEq, Hash, Debug ) ]
+pub struct EitherDirOrFile( data_type::Either< CrateDir, ManifestFile > );
+
+impl EitherDirOrFile
+{
+  /// Returns inner type which is an data_type::Either< CrateDir, ManifestFile >.
+  pub fn inner( self ) -> data_type::Either< CrateDir, ManifestFile >
+  {
+    self.0
+  }
+
+}
+
+impl TryFrom< &Path > for EitherDirOrFile
+{
+  type Error = PathError;
+
+  fn try_from( value : &Path ) -> Result< Self, Self::Error >
+  {
+    if value.file_name() == Some( "Cargo.toml".as_ref() )
+    {
+      Ok( Self( data_type::Either::Right( ManifestFile::try_from( value )? ) ) )
+    }
+    else
+    {
+      Ok( Self( data_type::Either::Left( CrateDir::try_from( value )? ) ) )
+    }
+  }
+}
+
+impl AsRef< Path > for EitherDirOrFile
+{
+  fn as_ref( &self ) -> &Path
+  {
+    match &self.0
+    {
+      data_type::Either::Left( crate_dir ) => crate_dir.as_ref(),
+      data_type::Either::Right( manifest_path ) => manifest_path.as_ref(),
+    }
+  }
+}
+
+impl AsMut< Path > for EitherDirOrFile
+{
+  fn as_mut( &mut self ) -> &mut Path
+  {
+    match &mut self.0
+    {
+      data_type::Either::Left( crate_dir ) => crate_dir.as_mut(),
+      data_type::Either::Right( manifest_path ) => manifest_path.as_mut(),
+    }
+  }
+}
+
+impl Deref for EitherDirOrFile
+{
+  type Target = Path;
+
+  fn deref( &self ) -> &Self::Target
+  {
+    self.0.deref()
+  }
+}
+
+impl DerefMut for EitherDirOrFile
+{
+  fn deref_mut( &mut self ) -> &mut Self::Target
+  {
+    self.0.deref_mut()
+  }
+}
\ No newline at end of file
diff --git a/module/move/willbe/src/entity/files/manifest_file.rs b/module/move/willbe/src/entity/files/manifest_file.rs
new file mode 100644
index 0000000000..d0a82fe907
--- /dev/null
+++ b/module/move/willbe/src/entity/files/manifest_file.rs
@@ -0,0 +1,276 @@
+use crate::*;
+
+use entity::
+{
+  PathError,
+  CrateDir,
+};
+use core::
+{
+  fmt,
+  ops::
+  {
+    Deref,
+    DerefMut,
+  },
+};
+use std::
+{
+  path::{ Path, PathBuf },
+  io,
+};
+
+use path::{ AbsolutePath, Utf8Path, Utf8PathBuf };
+
+use error::
+{
+  Result,
+};
+
+/// Path to crate directory
+#[ derive( Clone, Ord, PartialOrd, Eq, PartialEq, Hash ) ]
+pub struct ManifestFile( AbsolutePath );
+
+impl ManifestFile
+{
+  // aaa : bad : for Petro : why clone?
+  // /// Returns an absolute path.
+  // pub fn absolute_path( &self ) -> AbsolutePath
+  // {
+  //   self.0.clone()
+  // }
+
+  /// Returns inner type whicj is an absolute path.
+  #[ inline( always ) ]
+  pub fn inner( self ) -> AbsolutePath
+  {
+    self.0
+  }
+
+  /// Returns path to crate dir.
+  #[ inline( always ) ]
+  pub fn crate_dir( self ) -> CrateDir
+  {
+    self.into()
+  }
+
+}
+
+impl fmt::Display for ManifestFile
+{
+  fn fmt( &self, f : &mut fmt::Formatter<'_> ) -> fmt::Result
+  {
+    write!( f, "{}", self.0.display() )
+  }
+}
+
+impl fmt::Debug for ManifestFile
+{
+  fn fmt( &self, f : &mut fmt::Formatter<'_> ) -> fmt::Result
+  {
+    write!( f, "manifest file :: {}", self.0.display() )
+  }
+}
+
+// impl AsRef< AbsolutePath > for ManifestFile
+// {
+//   fn as_ref( &self ) -> &AbsolutePath
+//   {
+//     &self.0
+//   }
+// }
+
+impl From< CrateDir > for ManifestFile
+{
+  fn from( src : CrateDir ) -> Self
+  {
+    Self( src.absolute_path().join( "Cargo.toml" ) )
+  }
+}
+
+impl From< ManifestFile > for AbsolutePath
+{
+  fn from( src : ManifestFile ) -> Self
+  {
+    src.inner()
+  }
+}
+
+impl From< ManifestFile > for PathBuf
+{
+  fn from( src : ManifestFile ) -> Self
+  {
+    src.inner().inner()
+  }
+}
+
+// impl From< &ManifestFile > for &str
+// {
+//   fn from( src : &ManifestFile ) -> Self
+//   {
+//     src.to_str()
+//   }
+// }
+
+impl< 'a > TryFrom< &'a ManifestFile > for &'a str
+{
+  type Error = std::io::Error;
+  fn try_from( src : &'a ManifestFile ) -> Result< &'a str, Self::Error >
+  {
+    ( &src.0 ).try_into()
+  }
+}
+
+impl TryFrom< &ManifestFile > for String
+{
+  type Error = std::io::Error;
+  fn try_from( src : &ManifestFile ) -> Result< String, Self::Error >
+  {
+    let src2 : &str = src.try_into()?;
+    Ok( src2.into() )
+  }
+}
+
+impl TryFrom< &AbsolutePath > for ManifestFile
+{
+  type Error = PathError;
+
+  #[ inline( always ) ]
+  fn try_from( manifest_file : &AbsolutePath ) -> Result< Self, Self::Error >
+  {
+    manifest_file.clone().try_into()
+  }
+}
+
+impl TryFrom< AbsolutePath > for ManifestFile
+{
+  type Error = PathError;
+
+  #[ inline( always ) ]
+  fn try_from( manifest_file : AbsolutePath ) -> Result< Self, Self::Error >
+  {
+
+    if !manifest_file.as_ref().ends_with( "Cargo.toml" )
+    {
+      let err = io::Error::new( io::ErrorKind::Other, format!( "File path does not end with Cargo.toml as it should {manifest_file:?}" ) );
+      return Err( PathError::Io( err ) );
+    }
+
+    if !manifest_file.as_ref().is_file()
+    {
+      let err = io::Error::new( io::ErrorKind::InvalidData, format!( "Cannot find crate dir at {manifest_file:?}" ) );
+      return Err( PathError::Io( err ) );
+    }
+    Ok( Self( manifest_file ) )
+  }
+}
+
+impl TryFrom< PathBuf > for ManifestFile
+{
+  type Error = PathError;
+
+  #[ inline( always ) ]
+  fn try_from( manifest_file : PathBuf ) -> Result< Self, Self::Error >
+  {
+    Self::try_from( AbsolutePath::try_from( manifest_file )? )
+  }
+}
+
+impl TryFrom< &PathBuf > for ManifestFile
+{
+  type Error = PathError;
+
+  #[ inline( always ) ]
+  fn try_from( manifest_file : &PathBuf ) -> Result< Self, Self::Error >
+  {
+    Self::try_from( AbsolutePath::try_from( manifest_file )? )
+  }
+}
+
+impl TryFrom< &Path > for ManifestFile
+{
+  type Error = PathError;
+
+  #[ inline( always ) ]
+  fn try_from( manifest_file : &Path ) -> Result< Self, Self::Error >
+  {
+    Self::try_from( AbsolutePath::try_from( manifest_file )? )
+  }
+}
+
+impl TryFrom< &str > for ManifestFile
+{
+  type Error = PathError;
+
+  #[ inline( always ) ]
+  fn try_from( crate_dir_path : &str ) -> Result< Self, Self::Error >
+  {
+    Self::try_from( AbsolutePath::try_from( crate_dir_path )? )
+  }
+}
+
+impl TryFrom< Utf8PathBuf > for ManifestFile
+{
+  type Error = PathError;
+
+  #[ inline( always ) ]
+  fn try_from( manifest_file : Utf8PathBuf ) -> Result< Self, Self::Error >
+  {
+    Self::try_from( AbsolutePath::try_from( manifest_file )? )
+  }
+}
+
+impl TryFrom< &Utf8PathBuf > for ManifestFile
+{
+  type Error = PathError;
+
+  #[ inline( always ) ]
+  fn try_from( manifest_file : &Utf8PathBuf ) -> Result< Self, Self::Error >
+  {
+    Self::try_from( AbsolutePath::try_from( manifest_file )? )
+  }
+}
+
+impl TryFrom< &Utf8Path > for ManifestFile
+{
+  type Error = PathError;
+
+  #[ inline( always ) ]
+  fn try_from( manifest_file : &Utf8Path ) -> Result< Self, Self::Error >
+  {
+    Self::try_from( AbsolutePath::try_from( manifest_file )? )
+  }
+}
+
+impl AsRef< Path > for ManifestFile
+{
+  fn as_ref( &self ) -> &Path
+  {
+    self.0.as_ref()
+  }
+}
+
+impl AsMut< Path > for ManifestFile
+{
+  fn as_mut( &mut self ) -> &mut Path
+  {
+    self.0.as_mut()
+  }
+}
+
+impl Deref for ManifestFile
+{
+  type Target = AbsolutePath;
+  fn deref( &self ) -> &Self::Target
+  {
+    &self.0
+  }
+}
+
+impl DerefMut for ManifestFile
+{
+  fn deref_mut( &mut self ) -> &mut Self::Target
+  {
+    &mut self.0
+  }
+}
diff --git a/module/move/willbe/src/entity/files/source_file.rs b/module/move/willbe/src/entity/files/source_file.rs
new file mode 100644
index 0000000000..0ffba70092
--- /dev/null
+++ b/module/move/willbe/src/entity/files/source_file.rs
@@ -0,0 +1,270 @@
+use crate::*;
+
+use entity::
+{
+  PathError,
+  ManifestFile,
+};
+use core::
+{
+  fmt,
+  ops::
+  {
+    Deref,
+    DerefMut,
+  },
+};
+use std::
+{
+  fs,
+  path::{ Path, PathBuf },
+  borrow::Cow,
+};
+use error::
+{
+  Result,
+};
+use path::{ AbsolutePath, Utf8Path, Utf8PathBuf };
+
+/// Path to a source file
+#[ derive( Clone, Ord, PartialOrd, Eq, PartialEq, Hash ) ]
+pub struct SourceFile( AbsolutePath );
+
+impl SourceFile
+{
+
+  /// Returns inner type which is an absolute path.
+  #[ inline( always ) ]
+  pub fn inner( self ) -> AbsolutePath
+  {
+    self.0
+  }
+
+}
+
+impl fmt::Display for SourceFile
+{
+  fn fmt( &self, f : &mut fmt::Formatter<'_> ) -> fmt::Result
+  {
+    write!( f, "{}", self.0.display() )
+  }
+}
+
+impl fmt::Debug for SourceFile
+{
+  fn fmt( &self, f : &mut fmt::Formatter<'_> ) -> fmt::Result
+  {
+    write!( f, "source file :: {}", self.0.display() )
+  }
+}
+
+impl From< ManifestFile > for SourceFile
+{
+  fn from( src : ManifestFile ) -> Self
+  {
+    Self ( src.inner().parent().unwrap() )
+  }
+}
+
+impl From< SourceFile > for AbsolutePath
+{
+  fn from( src : SourceFile ) -> Self
+  {
+    src.inner()
+  }
+}
+
+impl From< SourceFile > for PathBuf
+{
+  fn from( src : SourceFile ) -> Self
+  {
+    src.inner().inner()
+  }
+}
+
+impl< 'a > TryFrom< &'a SourceFile > for &'a str
+{
+  type Error = std::io::Error;
+  fn try_from( src : &'a SourceFile ) -> Result< &'a str, Self::Error >
+  {
+    ( &src.0 ).try_into()
+  }
+}
+
+impl TryFrom< &SourceFile > for String
+{
+  type Error = std::io::Error;
+  fn try_from( src : &SourceFile ) -> Result< String, Self::Error >
+  {
+    let src2 : &str = src.try_into()?;
+    Ok( src2.into() )
+  }
+}
+
+impl TryFrom< &AbsolutePath > for SourceFile
+{
+  type Error = PathError;
+
+  #[ inline( always ) ]
+  fn try_from( src : &AbsolutePath ) -> Result< Self, Self::Error >
+  {
+    src.clone().try_into()
+  }
+}
+
+impl TryFrom< AbsolutePath > for SourceFile
+{
+  type Error = PathError;
+
+  #[ inline( always ) ]
+  fn try_from( src : AbsolutePath ) -> Result< Self, Self::Error >
+  {
+    Ok( Self( src ) )
+  }
+}
+
+impl TryFrom< PathBuf > for SourceFile
+{
+  type Error = PathError;
+
+  #[ inline( always ) ]
+  fn try_from( src : PathBuf ) -> Result< Self, Self::Error >
+  {
+    Self::try_from( AbsolutePath::try_from( src )? )
+  }
+}
+
+impl TryFrom< &Path > for SourceFile
+{
+  type Error = PathError;
+
+  #[ inline( always ) ]
+  fn try_from( src : &Path ) -> Result< Self, Self::Error >
+  {
+    Self::try_from( AbsolutePath::try_from( src )? )
+  }
+}
+
+impl TryFrom< &str > for SourceFile
+{
+  type Error = PathError;
+
+  #[ inline( always ) ]
+  fn try_from( src : &str ) -> Result< Self, Self::Error >
+  {
+    Self::try_from( AbsolutePath::try_from( src )? )
+  }
+}
+
+impl TryFrom< Utf8PathBuf > for SourceFile
+{
+  type Error = PathError;
+
+  #[ inline( always ) ]
+  fn try_from( src : Utf8PathBuf ) -> Result< Self, Self::Error >
+  {
+    Self::try_from( AbsolutePath::try_from( src )? )
+  }
+}
+
+impl TryFrom< &Utf8PathBuf > for SourceFile
+{
+  type Error = PathError;
+
+  #[ inline( always ) ]
+  fn try_from( src : &Utf8PathBuf ) -> Result< Self, Self::Error >
+  {
+    Self::try_from( AbsolutePath::try_from( src )? )
+  }
+}
+
+impl TryFrom< &Utf8Path > for SourceFile
+{
+  type Error = PathError;
+
+  #[ inline( always ) ]
+  fn try_from( src : &Utf8Path ) -> Result< Self, Self::Error >
+  {
+    Self::try_from( AbsolutePath::try_from( src )? )
+  }
+}
+
+impl AsRef< Path > for SourceFile
+{
+  fn as_ref( &self ) -> &Path
+  {
+    self.0.as_ref()
+  }
+}
+
+impl AsMut< Path > for SourceFile
+{
+  fn as_mut( &mut self ) -> &mut Path
+  {
+    self.0.as_mut()
+  }
+}
+
+impl Deref for SourceFile
+{
+  type Target = AbsolutePath;
+  fn deref( &self ) -> &Self::Target
+  {
+    &self.0
+  }
+}
+
+impl DerefMut for SourceFile
+{
+  fn deref_mut( &mut self ) -> &mut Self::Target
+  {
+    &mut self.0
+  }
+}
+
+// =
+
+impl CodeItems for SourceFile
+{
+  fn items( &self ) -> impl IterTrait< '_, syn::Item >
+  {
+    // xxx : use closures instead of expect
+    let content = fs::read_to_string( self.as_ref() ).expect( &format!( "Failed to parse file {self}" ) );
+    let parsed : syn::File = syn::parse_file( &content ).expect( &format!( "Failed to parse file {self}" ) );
+    parsed.items.into_iter()
+  }
+}
+
+impl AsCode for SourceFile
+{
+  fn as_code< 'a >( &'a self ) -> std::io::Result< Cow< 'a, str > >
+  {
+    Ok( Cow::Owned( std::fs::read_to_string( self.as_ref() )? ) )
+  }
+}
+
+// =
+
+/// A trait that defines a method for retrieving an iterator over entries.
+///
+/// The `Entries` trait is used to represent objects that can provide an iterator over their
+/// contained entries, which are represented as source files. This can be useful in scenarios
+/// where you need to access or process all entries associated with an object.
+pub trait Entries
+{
+  /// Returns an iterator over the entries.
+  fn entries( &self ) -> impl IterTrait< '_, SourceFile >;
+}
+
+/// A trait that defines a method for retrieving an iterator over source files.
+///
+/// The `Sources` trait is used to represent objects that can provide an iterator over their
+/// contained source files. This can be useful in scenarios where you need to access or process
+/// all source files associated with an object.
+pub trait Sources
+{
+  /// Returns an iterator over the source files.
+  fn sources( &self ) -> impl IterTrait< '_, SourceFile >;
+}
+
+// =
diff --git a/module/move/willbe/src/entity/git.rs b/module/move/willbe/src/entity/git.rs
new file mode 100644
index 0000000000..3e9d0239d0
--- /dev/null
+++ b/module/move/willbe/src/entity/git.rs
@@ -0,0 +1,88 @@
+mod private
+{
+  use crate::*;
+  
+  use std::fmt;
+  use process_tools::process;
+  use error::
+  {
+    Result,
+    untyped::{ format_err, Context },
+  };
+
+  #[ derive( Debug, Default, Clone ) ]
+  /// Represents an extended Git report with optional process reports.
+  pub struct ExtendedGitReport
+  {
+    /// Optional report for the `git add` process.
+    pub add : Option< process::Report >,
+    /// Optional report for the `git commit` process.
+    pub commit : Option< process::Report >,
+    /// Optional report for the `git push` process.
+    pub push : Option< process::Report >,
+  }
+
+  impl fmt::Display for ExtendedGitReport
+  {
+    fn fmt( &self, f : &mut fmt::Formatter<'_> ) -> fmt::Result
+    {
+      let Self { add, commit, push } = &self;
+
+      if let Some( add ) = add { writeln!( f, "{add}" )? }
+      if let Some( commit ) = commit { writeln!( f, "{commit}" )? }
+      if let Some( push ) = push { writeln!( f, "{push}" )? }
+
+      Ok( () )
+    }
+  }
+
+  // aaa : for Bohdan : should not be here // aaa : done
+  // aaa : for Bohdan : documentation // aaa : done
+  /// The `GitOptions` struct represents a set of options used to perform a Git commit operation.
+  #[ derive( Debug, Clone ) ]
+  pub struct GitOptions
+  {
+    /// An absolute path to the root directory of the Git repository.
+    pub git_root : AbsolutePath,
+    /// A vector of absolute paths to the files or directories that should be committed.
+    pub items : Vec< AbsolutePath >,
+    /// A string containing the commit message.
+    pub message : String,
+    /// A boolean flag indicating whether the commit should be performed in dry run mode
+    /// (i.e., no changes are actually made to the repository)
+    pub dry : bool,
+  }
+
+  // aaa : for Bohdan : should not be here // aaa : done
+  // aaa : for Bohdan : documentation // aaa : done
+  /// Performs a Git commit operation using the provided options
+  pub fn perform_git_commit( o : GitOptions ) -> Result< ExtendedGitReport >
+  {
+    let mut report = ExtendedGitReport::default();
+    if o.items.is_empty() { return Ok( report ); }
+    let items = o
+    .items
+    .iter()
+    .map
+    (
+      | item | item.as_ref().strip_prefix( o.git_root.as_ref() ).map( std::path::Path::to_string_lossy )
+      .with_context( || format!("git_root: {}, item: {}", o.git_root.as_ref().display(), item.as_ref().display() ) )
+    )
+    .collect::< Result< Vec< _ > > >()?;
+    let res = tool::git::add( &o.git_root, &items, o.dry ).map_err( | e | format_err!( "{report}\n{e}" ) )?;
+    report.add = Some( res );
+    let res = tool::git::commit( &o.git_root, &o.message, o.dry ).map_err( | e | format_err!( "{report}\n{e}" ) )?;
+    report.commit = Some( res );
+
+    Ok( report )
+  }
+}
+
+//
+
+crate::mod_interface!
+{
+  protected use ExtendedGitReport;
+  protected use GitOptions;
+  protected use perform_git_commit;
+}
diff --git a/module/move/willbe/src/entity/manifest.rs b/module/move/willbe/src/entity/manifest.rs
index d167175177..75a4f3f8f0 100644
--- a/module/move/willbe/src/entity/manifest.rs
+++ b/module/move/willbe/src/entity/manifest.rs
@@ -7,82 +7,14 @@ pub( crate ) mod private
   {
     io::{ self, Read },
     fs,
-    path::{ Path, PathBuf },
   };
-  use wtools::error::
+  use error::
   {
-    Result,
-    thiserror,
-    for_lib::Error,
-    for_app::format_err,
+    typed::Error,
+    untyped::{ Result, format_err },
   };
-  use _path::AbsolutePath;
 
-  /// `CrateDirError` enum represents errors when creating a `CrateDir` object.
-  #[ derive( Debug, Error ) ]
-  pub enum CrateDirError
-  {
-    /// Indicates a validation error with a descriptive message.
-    #[ error( "Failed to create a `CrateDir` object due to `{0}`" ) ]
-    Validation( String ),
-  }
-
-  /// Path to crate directory
-  #[ derive( Debug, Clone ) ]
-  pub struct CrateDir( AbsolutePath );
-
-  impl AsRef< Path > for CrateDir
-  {
-    fn as_ref( &self ) -> &Path
-    {
-      self.0.as_ref()
-    }
-  }
-
-  impl TryFrom< AbsolutePath > for CrateDir
-  {
-    // aaa : make better errors
-    // aaa : use `CrateDirError` for it
-    type Error = CrateDirError;
-
-    fn try_from( crate_dir_path : AbsolutePath ) -> Result< Self, Self::Error >
-    {
-      if !crate_dir_path.as_ref().join( "Cargo.toml" ).exists()
-      {
-        return Err( CrateDirError::Validation( "The path is not a crate directory path".into() ) );
-      }
-
-      Ok( Self( crate_dir_path ) )
-    }
-  }
-  
-  impl TryFrom< PathBuf > for CrateDir
-  {
-    type Error = CrateDirError;
-
-    fn try_from( crate_dir_path : PathBuf ) -> Result< Self, Self::Error >
-    {
-      if !crate_dir_path.join( "Cargo.toml" ).exists()
-      {
-        return Err( CrateDirError::Validation( "The path is not a crate directory path".into() ) );
-      }
-
-      Ok( Self( AbsolutePath::try_from( crate_dir_path ).unwrap() ) )
-    }
-  }
-
-  impl CrateDir
-  {
-    /// Returns an absolute path.
-    pub fn absolute_path( &self ) -> AbsolutePath
-    {
-      self.0.clone()
-    }
-  }
-
-
-
-/// Represents errors related to manifest data processing.
+  /// Represents errors related to manifest data processing.
   #[ derive( Debug, Error ) ]
   pub enum  ManifestError
   {
@@ -110,45 +42,43 @@ pub( crate ) mod private
   pub struct Manifest
   {
     /// Path to `Cargo.toml`
-    pub manifest_path : AbsolutePath,
+    // pub manifest_file : AbsolutePath,
+    pub manifest_file : ManifestFile,
+    // aaa : for Bohdan : for Petro : why not ManifestFile?
     /// Strict type of `Cargo.toml` manifest.
-    pub manifest_data : Option< toml_edit::Document >,
+    pub data : toml_edit::Document,
+    // pub data : Option< toml_edit::Document >,
   }
 
-  impl TryFrom< AbsolutePath > for Manifest
+  impl TryFrom< ManifestFile > for Manifest
   {
-    // aaa : make better errors
-    // aaa : return `ManifestError`
     type Error = ManifestError;
 
-    fn try_from( manifest_path : AbsolutePath ) -> Result< Self, Self::Error >
+    fn try_from( manifest_file : ManifestFile ) -> Result< Self, Self::Error >
     {
-      if !manifest_path.as_ref().ends_with( "Cargo.toml" )
-      {
-        let err =  io::Error::new( io::ErrorKind::NotFound, "Cannot find manifest" );
-        return Err( ManifestError::Io( err ) );
-      }
+
+      let read = fs::read_to_string( &manifest_file )?;
+      let data = read.parse::< toml_edit::Document >()
+      .map_err( | e | io::Error::new( io::ErrorKind::InvalidData, e ) )?;
 
       Ok
       (
         Manifest
         {
-          manifest_path,
-          manifest_data : None,
+          manifest_file,
+          data,
         }
       )
     }
   }
 
-  impl From< CrateDir > for Manifest
+  impl TryFrom< CrateDir > for Manifest
   {
-    fn from( value : CrateDir ) -> Self
+    type Error = ManifestError;
+
+    fn try_from( src : CrateDir ) -> Result< Self, Self::Error >
     {
-      Self
-      {
-        manifest_path : value.0.join( "Cargo.toml" ),
-        manifest_data : None,
-      }
+      Self::try_from( src.manifest_file() )
     }
   }
 
@@ -164,99 +94,65 @@ pub( crate ) mod private
     /// A mutable reference to the TOML document.
     pub fn data( &mut self ) -> &mut toml_edit::Document
     {
-      if self.manifest_data.is_none() { self.load().unwrap() }
-      
-      self.manifest_data.as_mut().unwrap()
+      // if self.data.is_none() { self.load().unwrap() }
+      // self.data.as_mut().unwrap()
+      &mut self.data
     }
-    
+
     /// Returns path to `Cargo.toml`.
-    pub fn manifest_path( &self ) -> &AbsolutePath
+    pub fn manifest_file( &self ) -> &AbsolutePath
     {
-      &self.manifest_path
+      &self.manifest_file
     }
 
     /// Path to directory where `Cargo.toml` located.
     pub fn crate_dir( &self ) -> CrateDir
     {
-      CrateDir( self.manifest_path.parent().unwrap() )
-    }
-
-    /// Load manifest from path.
-    pub fn load( &mut self ) -> Result< (), ManifestError >
-    {
-      let read = fs::read_to_string( &self.manifest_path )?;
-      let result = read.parse::< toml_edit::Document >().map_err( | e | io::Error::new( io::ErrorKind::InvalidData, e ) )?;
-      self.manifest_data = Some( result );
-
-      Ok( () )
+      self.manifest_file.parent().unwrap().try_into().unwrap()
+      // CrateDir( self.manifest_file.parent().unwrap() )
     }
 
-    // aaa : for Bohdan : don't abuse anyhow
-    // aaa : return `io` error
     /// Store manifest.
     pub fn store( &self ) -> io::Result< () >
     {
-      // If the `manifest_data` doesn't contain any data, then there's no point in attempting to write
-      if let Some( data ) = &self.manifest_data
-      {
-        fs::write( &self.manifest_path, data.to_string() )?;
-      }
+      fs::write( &self.manifest_file, self.data.to_string() )?;
 
       Ok( () )
     }
 
     /// Check that the current manifest is the manifest of the package (can also be a virtual workspace).
-    pub fn package_is( &self ) -> Result< bool, ManifestError>
+    pub fn package_is( &self ) -> bool
     {
-      let data = self.manifest_data.as_ref().ok_or_else( || ManifestError::EmptyManifestData )?;
-      if data.get( "package" ).is_some() && data[ "package" ].get( "name" ).is_some()
-      {
-        return Ok( true );
-      }
-      Ok( false )
+      // let data = self.data.as_ref().ok_or_else( || ManifestError::EmptyManifestData )?;
+      let data = &self.data;
+      data.get( "package" ).is_some() && data[ "package" ].get( "name" ).is_some()
     }
 
     /// Check that module is local.
     /// The package is defined as local if the `publish` field is set to `false' or the registers are specified.
-    pub fn local_is( &self ) -> Result<bool, ManifestError>
+    pub fn local_is( &self ) -> bool
     {
-      let data = self.manifest_data.as_ref().ok_or_else( || ManifestError::EmptyManifestData )?;
+      // let data = self.data.as_ref().ok_or_else( || ManifestError::EmptyManifestData )?;
+      let data = &self.data;
       if data.get( "package" ).is_some() && data[ "package" ].get( "name" ).is_some()
       {
         let remote = data[ "package" ].get( "publish" ).is_none()
-                     || data[ "package" ][ "publish" ].as_bool().ok_or_else( || ManifestError::CannotFindValue( "[package], [publish]".into() ) )?;
-        return Ok(!remote);
-      }
-      Ok(true)
-    }
-  }
+        || data[ "package" ][ "publish" ].as_bool().or( Some( true ) ).unwrap();
 
-  /// Create and load manifest by specified path
-  // aaa : for Bohdan : use newtype, add proper errors handing
-  // aaa : return `ManifestError`
-  pub fn open( path : AbsolutePath ) -> Result< Manifest, ManifestError >
-  {
-    let mut manifest = if let Ok( dir ) = CrateDir::try_from( path.clone() )
-    {
-      Manifest::from( dir )
+        return !remote;
+      }
+      true
     }
-    else
-    {
-      Manifest::try_from( path )?
-    };
-
-    manifest.load()?;
-
-    Ok( manifest )
   }
 
   /// Retrieves the repository URL of a package from its `Cargo.toml` file.
-  pub fn repo_url( package_path : &Path ) -> Result< String >
+  pub fn repo_url( crate_dir : &CrateDir ) -> Result< String >
   {
-    let path = package_path.join( "Cargo.toml" );
+    let path = crate_dir.clone().manifest_file().inner().inner();
     if path.exists()
     {
       let mut contents = String::new();
+      // qqq : zzz : for Petro : redundant read and parse
       fs::File::open( path )?.read_to_string( &mut contents )?;
       let doc = contents.parse::< toml_edit::Document >()?;
 
@@ -266,12 +162,12 @@ pub( crate ) mod private
       .and_then( | i | i.as_str() );
       if let Some( repo_url ) = repo_url
       {
-        url::extract_repo_url( repo_url ).ok_or_else( || format_err!( "Fail to extract repository url ") )
+        url::repo_url_extract( repo_url ).ok_or_else( || format_err!( "Fail to extract repository url ") )
       }
       else
       {
-        let report = git::ls_remote_url( package_path )?;
-        url::extract_repo_url( &report.out.trim() ).ok_or_else( || format_err!( "Fail to extract repository url from git remote.") )
+        let report = tool::git::ls_remote_url( crate_dir.clone().absolute_path() )?;
+        url::repo_url_extract( &report.out.trim() ).ok_or_else( || format_err!( "Fail to extract repository url from git remote.") )
       }
     }
     else
@@ -287,9 +183,6 @@ pub( crate ) mod private
 crate::mod_interface!
 {
   exposed use Manifest;
-  exposed use CrateDir;
   orphan use ManifestError;
-  orphan use CrateDirError;
-  protected use open;
   protected use repo_url;
 }
diff --git a/module/move/willbe/src/entity/mod.rs b/module/move/willbe/src/entity/mod.rs
index 24342f1c3b..6f26700128 100644
--- a/module/move/willbe/src/entity/mod.rs
+++ b/module/move/willbe/src/entity/mod.rs
@@ -1,5 +1,16 @@
 crate::mod_interface!
 {
+  /// Rust toolchain channel: stable/nightly.
+  layer channel;
+  orphan use super::channel;
+
+  /// Source code.
+  layer code;
+  orphan use super::code;
+
+  /// Dependency of a package.
+  layer dependency;
+  orphan use super::dependency;
 
   /// Compare two crate archives and create a difference report.
   layer diff;
@@ -9,43 +20,71 @@ crate::mod_interface!
   layer features;
   orphan use super::features;
 
+  /// Paths and files.
+  layer files;
+  orphan use super::files;
+
+  /// Git.
+  layer git;
+  orphan use super::git;
+
+  /// To manipulate manifest data.
+  layer manifest;
+  orphan use super::manifest;
+
+  /// Rust build optimization: debug/release
+  layer optimization;
+  orphan use super::optimization;
+
+  /// Offers capabilities for package management, facilitating the handling and organization of packages.
+  layer package;
+  orphan use super::package;
+
+  /// Md's extension for workspace.
+  layer package_md_extension;
+  orphan use super::package_md_extension;
+
+  /// Provides a set of functionalities for handling and manipulating packages.
+  layer packages;
+  orphan use super::packages;
+
   /// Handles operations related to packed Rust crates
   layer packed_crate;
   orphan use super::packed_crate;
-  
+
+  /// Progress bar staff.
+  layer progress_bar;
+  orphan use super::progress_bar;
+
+  /// Publish.
+  layer publish;
+  orphan use super::publish;
+
   /// Facade for `preatytable` crate.
   layer table;
   orphan use super::table;
 
-  /// Provides a set of functionalities for handling and manipulating packages.
-  layer packages;
-  orphan use super::packages;
+  /// Operations with tests
+  layer test;
+  orphan use super::test;
 
-  /// Offers capabilities for package management, facilitating the handling and organization of packages.
-  layer package;
-  orphan use super::package;
+  /// Provides an opportunity to work with versions.
+  layer version;
+  orphan use super::version;
 
   /// It features the ability to interact with workspaces, manage their participants, and other functionalities.
   layer workspace;
   orphan use super::workspace;
 
-  /// To manipulate manifest data.
-  layer manifest;
-  orphan use super::manifest;
+  /// Workspace' graph.
+  layer workspace_graph;
+  orphan use super::workspace_graph;
 
-  /// Provides an opportunity to work with versions.
-  layer version;
-  orphan use super::version;
+  /// Md's extension for workspace.
+  layer workspace_md_extension;
+  orphan use super::workspace_md_extension;
 
-  /// Operations with tests
-  layer test;
-  orphan use super::test;
-  
-  /// Rust toolchain channel: stable/nightly.
-  layer channel;
-  orphan use super::channel;
-  
-  /// Rust build optimization: debug/release
-  layer optimization;
-  orphan use super::optimization;
+  /// Packages of workspace.
+  layer workspace_package;
+  orphan use super::workspace_package;
 }
diff --git a/module/move/willbe/src/entity/optimization.rs b/module/move/willbe/src/entity/optimization.rs
index a2c1a58241..56bdaf1385 100644
--- a/module/move/willbe/src/entity/optimization.rs
+++ b/module/move/willbe/src/entity/optimization.rs
@@ -1,9 +1,8 @@
 mod private
 {
-  use std::fmt::Formatter;
-
   /// Rust optimization
-  #[ derive( Debug, Default, Copy, Clone, Hash, Eq, PartialEq, Ord, PartialOrd ) ]
+  #[ derive( Debug, Default, Copy, Clone, Hash, Eq, PartialEq, Ord, PartialOrd, derive_tools::Display ) ]
+  #[ display( style = "snake_case" ) ]
   pub enum Optimization
   {
     /// Debug
@@ -12,21 +11,7 @@ mod private
     /// Release
     Release,
   }
-
-  // qqq : use derive
-  impl std::fmt::Display for Optimization
-  {
-    fn fmt( &self, f : &mut Formatter< '_ > ) -> std::fmt::Result
-    {
-      match self
-      {
-        Optimization::Debug => write!( f, "debug" ),
-        Optimization::Release => write!( f, "release" ),
-      }
-    }
-  }
 }
-// qqq : for Petro : why is it here?
 
 crate::mod_interface!
 {
diff --git a/module/move/willbe/src/entity/package.rs b/module/move/willbe/src/entity/package.rs
index 19940502b6..6639904f2b 100644
--- a/module/move/willbe/src/entity/package.rs
+++ b/module/move/willbe/src/entity/package.rs
@@ -4,47 +4,38 @@ mod private
 
   use std::
   {
-    path::Path,
-    collections::{ HashMap, HashSet },
+    hash::Hash,
   };
-  use std::fmt::Formatter;
-  use std::hash::Hash;
-  use std::path::PathBuf;
 
-  use process_tools::process;
-  use manifest::{ Manifest, ManifestError };
   use crates_tools::CrateArchive;
-
-  use workspace::Workspace;
-  use _path::AbsolutePath;
-
-  use wtools::
+  use error::
   {
-    iter::Itertools,
-    error::
-    {
-      thiserror,
-      Result,
-      for_lib::Error,
-      for_app::{ format_err, Context },
-    }
+    Result,
+    typed::Error,
   };
-  use action::readme_health_table_renew::Stability;
-  use former::Former;
-  use workspace::WorkspacePackage;
-  use diff::crate_diff;
-  use version::version_revert;
-  use error_tools::for_app::Error;
-  use channel::Channel;
 
+  /// A wrapper type for representing the name of a package.
   ///
+  /// This struct encapsulates a `String` that holds the name of a package.
+  #[ derive
+  (
+    Debug, Default, Clone, Hash, Ord, PartialOrd, Eq, PartialEq,
+    derive_tools::Display, derive_tools::Deref, derive_tools::From, derive_tools::AsRef,
+  ) ]
+  pub struct PackageName( String );
+
+  //
+  /// Represents different types of packages in a Cargo workspace.
+  ///
+  /// It is designed to accommodate the two primary types of package
+  /// representations within a Cargo workspace.
   #[ derive( Debug, Clone ) ]
-  pub enum Package
+  pub enum Package< 'a >
   {
     /// `Cargo.toml` file.
     Manifest( Manifest ),
-    /// Cargo metadata package.
-    Metadata( WorkspacePackage ),
+    /// Cargo package package.
+    WorkspacePackageRef( WorkspacePackageRef< 'a > ),
   }
 
   /// Represents errors related to package handling.
@@ -53,10 +44,10 @@ mod private
   {
     /// Manifest error.
     #[ error( "Manifest error. Reason : {0}." ) ]
-    Manifest( #[ from ] ManifestError ),
-    /// Fail to load metadata.
-    #[ error( "Fail to load metadata." ) ]
-    Metadata,
+    Manifest( #[ from ] manifest::ManifestError ),
+    /// Fail to load package.
+    #[ error( "Fail to load package." ) ]
+    WorkspacePackageRef,
     /// Fail to load remote package.
     #[ error( "Fail to load remote package." ) ]
     LoadRemotePackage,
@@ -71,49 +62,45 @@ mod private
     NotAPackage,
   }
 
-  impl TryFrom< AbsolutePath > for Package
+  impl< 'a > TryFrom< ManifestFile > for Package< 'a >
   {
-    // aaa : make better errors
-    // aaa : return `PackageError` instead of `anohow` message
     type Error = PackageError;
 
-    fn try_from( value : AbsolutePath ) -> Result< Self, Self::Error >
+    fn try_from( value : ManifestFile ) -> Result< Self, Self::Error >
     {
-      let manifest =  manifest::open( value.clone() )?;
-      if !manifest.package_is()?
+      let package = Manifest::try_from( value )?;
+      if !package.package_is()
       {
         return Err( PackageError::NotAPackage );
       }
 
-      Ok( Self::Manifest( manifest ) )
+      Ok( Self::Manifest( package ) )
     }
   }
 
-  impl TryFrom< CrateDir > for Package
+  impl< 'a > TryFrom< CrateDir > for Package< 'a >
   {
     type Error = PackageError;
 
     fn try_from( value : CrateDir ) -> Result< Self, Self::Error >
     {
-      let manifest =  manifest::open( value.absolute_path().join( "Cargo.toml" ) )?;
-      if !manifest.package_is()?
+      let package = Manifest::try_from( value )?;
+      if !package.package_is()
       {
         return Err( PackageError::NotAPackage );
       }
 
-      Ok( Self::Manifest( manifest ) )
+      Ok( Self::Manifest( package ) )
     }
   }
 
-  impl TryFrom< Manifest > for Package
+  impl< 'a > TryFrom< Manifest > for Package< 'a >
   {
-    // aaa : make better errors
-    // aaa : return `PackageError` instead of `anohow` message
     type Error = PackageError;
 
     fn try_from( value : Manifest ) -> Result< Self, Self::Error >
     {
-      if !value.package_is()?
+      if !value.package_is()
       {
         return Err( PackageError::NotAPackage );
       }
@@ -122,23 +109,24 @@ mod private
     }
   }
 
-  impl From< WorkspacePackage > for Package
+  impl< 'a > From< WorkspacePackageRef< 'a > > for Package< 'a >
   {
-    fn from( value : WorkspacePackage ) -> Self
+    fn from( value : WorkspacePackageRef< 'a > ) -> Self
     {
-      Self::Metadata( value )
+      Self::WorkspacePackageRef( value )
     }
   }
 
-  impl Package
+  impl< 'a > Package< 'a >
   {
+
     /// Path to `Cargo.toml`
-    pub fn manifest_path( &self ) -> AbsolutePath
+    pub fn manifest_file( &self ) -> ManifestFile
     {
       match self
       {
-        Self::Manifest( manifest ) => manifest.manifest_path.clone(),
-        Self::Metadata( metadata ) => AbsolutePath::try_from( metadata.manifest_path().as_std_path().to_path_buf() ).unwrap(),
+        Self::Manifest( package ) => package.manifest_file.clone(),
+        Self::WorkspacePackageRef( package ) => package.manifest_file().unwrap(),
       }
     }
 
@@ -147,33 +135,8 @@ mod private
     {
       match self
       {
-        Self::Manifest( manifest ) => manifest.crate_dir(),
-        Self::Metadata( metadata ) =>
-        {
-          let path = metadata.manifest_path().parent().unwrap().as_std_path().to_path_buf();
-          let absolute = AbsolutePath::try_from( path ).unwrap();
-
-          CrateDir::try_from( absolute ).unwrap()
-        },
-      }
-    }
-
-    /// Package name
-    pub fn name( &self ) -> Result< String, PackageError >
-    {
-      match self
-      {
-        Self::Manifest( manifest ) =>
-        {
-          let data = manifest.manifest_data.as_ref().ok_or_else( || PackageError::Manifest( ManifestError::EmptyManifestData ) )?;
-
-          // Unwrap safely because of the `Package` type guarantee
-          Ok( data[ "package" ][ "name" ].as_str().unwrap().to_string() )
-        }
-        Self::Metadata( metadata ) =>
-        {
-          Ok( metadata.name().clone() )
-        }
+        Self::Manifest( package ) => package.crate_dir(),
+        Self::WorkspacePackageRef( package ) => package.crate_dir().unwrap(),
       }
     }
 
@@ -182,89 +145,35 @@ mod private
     {
       match self
       {
-        Self::Manifest( manifest ) =>
+        Self::Manifest( package ) =>
         {
-          let data = manifest.manifest_data.as_ref().ok_or_else( || PackageError::Manifest( ManifestError::EmptyManifestData ) )?;
+          // let data = package.data.as_ref().ok_or_else( || PackageError::Manifest( ManifestError::EmptyManifestData ) )?;
+          let data = &package.data;
 
           // Unwrap safely because of the `Package` type guarantee
           Ok( data[ "package" ][ "version" ].as_str().unwrap().to_string() )
         }
-        Self::Metadata( metadata ) =>
-        {
-          Ok( metadata.version().to_string() )
-        }
-      }
-    }
-
-    /// Stability
-    pub fn stability( &self ) -> Result< Stability, PackageError >
-    {
-      match self
-      {
-        Self::Manifest( manifest ) =>
-        {
-          let data = manifest.manifest_data.as_ref().ok_or_else( || PackageError::Manifest( ManifestError::EmptyManifestData ) )?;
-
-          // Unwrap safely because of the `Package` type guarantee
-          Ok( data[ "package" ].get( "metadata" ).and_then( | m | m.get( "stability" ) ).and_then( | s | s.as_str() ).and_then( | s | s.parse::< Stability >().ok() ).unwrap_or( Stability::Experimental)  )
-        }
-        Self::Metadata( metadata ) =>
+        Self::WorkspacePackageRef( package ) =>
         {
-          Ok( metadata.metadata()[ "stability" ].as_str().and_then( | s | s.parse::< Stability >().ok() ).unwrap_or( Stability::Experimental) )
-        }
-      }
-    }
-
-    /// Repository
-    pub fn repository( &self ) -> Result< Option< String >, PackageError >
-    {
-      match self
-      {
-        Self::Manifest( manifest ) =>
-        {
-          let data = manifest.manifest_data.as_ref().ok_or_else( || PackageError::Manifest( ManifestError::EmptyManifestData ) )?;
-
-          // Unwrap safely because of the `Package` type guarantee
-          Ok( data[ "package" ].get( "repository" ).and_then( | r | r.as_str() ).map( | r | r.to_string()) )
-        }
-        Self::Metadata( metadata ) =>
-        {
-          Ok( metadata.repository().cloned() )
-        }
-      }
-    }
-
-    /// Discord url
-    pub fn discord_url( &self ) -> Result< Option< String >, PackageError >
-    {
-      match self
-      {
-        Self::Manifest( manifest ) =>
-        {
-          let data = manifest.manifest_data.as_ref().ok_or_else( || PackageError::Manifest( ManifestError::EmptyManifestData ) )?;
-
-          Ok( data[ "package" ].get( "metadata" ).and_then( | m | m.get( "discord_url" ) ).and_then( | url | url.as_str() ).map( | r | r.to_string() ) )
-        }
-        Self::Metadata( metadata ) =>
-        {
-          Ok( metadata.metadata()[ "discord_url" ].as_str().map( | url | url.to_string() ) )
+          Ok( package.version().to_string() )
         }
       }
     }
 
     /// Check that module is local.
-    pub fn local_is( &self ) -> Result< bool, ManifestError >
+    pub fn local_is( &self ) -> bool
     {
       match self
       {
-        Self::Manifest( manifest ) =>
+        Self::Manifest( package ) =>
         {
-          // verify that manifest not empty
-          manifest.local_is()
+          // verify that package not empty
+          package.local_is()
         }
-        Self::Metadata( metadata ) =>
+        Self::WorkspacePackageRef( package ) =>
         {
-          Ok( !( metadata.publish().is_none() || metadata.publish().as_ref().is_some_and( | p | p.is_empty() ) ) )
+          !( package.publish().is_none() || package.publish().as_ref().is_some_and( | p | p.is_empty() ) )
+          // Ok( !( package.publish().is_none() || package.publish().as_ref().is_some_and( | p | p.is_empty() ) ) )
         }
       }
     }
@@ -274,654 +183,15 @@ mod private
     {
       match self
       {
-        Package::Manifest( manifest ) => Ok( manifest.clone() ),
-        Package::Metadata( metadata ) => manifest::open
+        Package::Manifest( package ) => Ok( package.clone() ),
+        Package::WorkspacePackageRef( package ) => Manifest::try_from
         (
-          AbsolutePath::try_from( metadata.manifest_path() ).map_err( | _ | PackageError::LocalPath )?
+          package.manifest_file().map_err( | _ | PackageError::LocalPath )? // qqq : use trait
         )
-        .map_err( | _ | PackageError::Metadata ),
-      }
-    }
-
-    /// Returns the `Metadata`
-    pub fn metadata( &self ) -> Result< WorkspacePackage, PackageError >
-    {
-      match self
-      {
-        Package::Manifest( manifest ) =>
-        Workspace::with_crate_dir( manifest.crate_dir() ).map_err( | _ | PackageError::Metadata )?
-        .package_find_by_manifest( &manifest.manifest_path )
-        .ok_or_else( || PackageError::Metadata ),
-        Package::Metadata( metadata ) => Ok( metadata.clone() ),
-      }
-    }
-  }
-
-  #[ derive( Debug, Default, Clone ) ]
-  pub struct ExtendedGitReport
-  {
-    pub add : Option< process::Report >,
-    pub commit : Option< process::Report >,
-    pub push : Option< process::Report >,
-  }
-
-  impl std::fmt::Display for ExtendedGitReport
-  {
-    fn fmt(&self, f: &mut Formatter<'_>) -> std::fmt::Result {
-      let Self { add, commit, push } = &self;
-      if let Some( add ) = add { writeln!( f, "{add}" )? }
-      if let Some( commit ) = commit { writeln!( f, "{commit}" )? }
-      if let Some( push ) = push { writeln!( f, "{push}" )? }
-
-      Ok( () )
-    }
-  }
-
-  #[ derive( Debug, Clone ) ]
-  pub struct GitOptions
-  {
-    pub git_root : AbsolutePath,
-    pub items : Vec< AbsolutePath >,
-    pub message : String,
-    pub dry : bool,
-  }
-
-  fn perform_git_commit( o : GitOptions ) -> Result< ExtendedGitReport >
-  {
-    let mut report = ExtendedGitReport::default();
-    if o.items.is_empty() { return Ok( report ); }
-    let items = o
-    .items
-    .iter()
-    .map
-    (
-      | item | item.as_ref().strip_prefix( o.git_root.as_ref() ).map( Path::to_string_lossy )
-      .with_context( || format!("git_root: {}, item: {}", o.git_root.as_ref().display(), item.as_ref().display() ) )
-    )
-    .collect::< Result< Vec< _ > > >()?;
-    let res = git::add( &o.git_root, &items, o.dry ).map_err( | e | format_err!( "{report}\n{e}" ) )?;
-    report.add = Some( res );
-    let res = git::commit( &o.git_root, &o.message, o.dry ).map_err( | e | format_err!( "{report}\n{e}" ) )?;
-    report.commit = Some( res );
-
-    Ok( report )
-  }
-
-  #[ derive( Debug, Clone ) ]
-  pub struct PackagePublishInstruction
-  {
-    pub package_name : String,
-    pub pack : cargo::PackOptions,
-    pub version_bump : version::BumpOptions,
-    pub git_options : GitOptions,
-    pub publish : cargo::PublishOptions,
-    pub dry : bool,
-  }
-
-  /// Represents a planner for publishing a single package.
-  #[ derive( Debug, Former ) ]
-  #[ perform( fn build() -> PackagePublishInstruction ) ]
-  pub struct PublishSinglePackagePlanner
-  {
-    workspace_dir : CrateDir,
-    package : Package,
-    channel : Channel,
-    base_temp_dir : Option< PathBuf >,
-    #[ former( default = true ) ]
-    dry : bool,
-  }
-
-  impl PublishSinglePackagePlanner
-  {
-    fn build( self ) -> PackagePublishInstruction
-    {
-      let crate_dir = self.package.crate_dir();
-      let workspace_root : AbsolutePath = self.workspace_dir.absolute_path();
-      let pack = cargo::PackOptions
-      {
-        path : crate_dir.as_ref().into(),
-        channel : self.channel,
-        allow_dirty : self.dry,
-        no_verify : self.dry,
-        temp_path : self.base_temp_dir.clone(),
-        dry : self.dry,
-      };
-      let old_version : version::Version = self.package.version().as_ref().unwrap().try_into().unwrap();
-      let new_version = old_version.clone().bump();
-      // bump the package version in dependents (so far, only workspace)
-      let dependencies = vec![ CrateDir::try_from( workspace_root.clone() ).unwrap() ];
-      let version_bump = version::BumpOptions
-      {
-        crate_dir : crate_dir.clone(),
-        old_version : old_version.clone(),
-        new_version : new_version.clone(),
-        dependencies : dependencies.clone(),
-        dry : self.dry,
-      };
-      let git_options = GitOptions
-      {
-        git_root : workspace_root,
-        items : dependencies.iter().chain([ &crate_dir ]).map( | d | d.absolute_path().join( "Cargo.toml" ) ).collect(),
-        message : format!( "{}-v{}", self.package.name().unwrap(), new_version ),
-        dry : self.dry,
-      };
-      let publish = cargo::PublishOptions
-      {
-        path : crate_dir.as_ref().into(),
-        temp_path : self.base_temp_dir.clone(),
-        retry_count : 2,
-        dry : self.dry,
-      };
-
-      PackagePublishInstruction
-      {
-        package_name : self.package.name().unwrap(),
-        pack,
-        version_bump,
-        git_options,
-        publish,
-        dry : self.dry,
-      }
-    }
-  }
-
-  /// Performs package publishing based on the given arguments.
-  ///
-  /// # Arguments
-  ///
-  /// * `args` - The package publishing instructions.
-  ///
-  /// # Returns
-  ///
-  /// * `Result<PublishReport>` - The result of the publishing operation, including information about the publish, version bump, and git operations.
-  pub fn perform_package_publish( instruction : PackagePublishInstruction ) -> Result< PublishReport, ( PublishReport, Error ) >
-  {
-    let mut report = PublishReport::default();
-    let PackagePublishInstruction
-    {
-      package_name: _,
-      mut pack,
-      mut version_bump,
-      mut git_options,
-      mut publish,
-      dry,
-    } = instruction;
-    pack.dry = dry;
-    version_bump.dry = dry;
-    git_options.dry = dry;
-    publish.dry = dry;
-
-    report.get_info = Some( cargo::pack( pack ).map_err( | e | ( report.clone(), e ) )? );
-    // qqq : redundant field?
-    report.publish_required = true;
-    let bump_report = version::version_bump( version_bump ).map_err( | e | ( report.clone(), e ) )?;
-    report.bump = Some( bump_report.clone() );
-    let git_root = git_options.git_root.clone();
-    let git = match perform_git_commit( git_options )
-    {
-      Ok( git ) => git,
-      Err( e ) =>
-      {
-        version_revert( &bump_report )
-        .map_err( | le |
-        (
-          report.clone(),
-          format_err!( "Base error:\n{}\nRevert error:\n{}", e.to_string().replace( '\n', "\n\t" ), le.to_string().replace( '\n', "\n\t" ) )
-        ))?;
-        return Err(( report, e ));
-      }
-    };
-    report.add = git.add;
-    report.commit = git.commit;
-    report.publish = match cargo::publish( publish )
-    {
-      Ok( publish ) => Some( publish ),
-      Err( e ) =>
-      {
-        git::reset( git_root.as_ref(), true, 1, false )
-        .map_err( | le |
-        (
-          report.clone(),
-          format_err!( "Base error:\n{}\nRevert error:\n{}", e.to_string().replace( '\n', "\n\t" ), le.to_string().replace( '\n', "\n\t" ) )
-        ))?;
-        return Err(( report, e ));
-      }
-    };
-
-    let res = git::push( &git_root, dry ).map_err( | e | ( report.clone(), e ) )?;
-    report.push = Some( res );
-
-    Ok( report )
-  }
-
-  /// `PublishPlan` manages the overall publication process for multiple packages.
-  /// It organizes the necessary details required for publishing each individual package.
-  /// This includes the workspace root directory, any temporary directories used during the process,
-  /// and the set of specific instructions for publishing each package.
-  #[ derive( Debug, Former, Clone ) ]
-  pub struct PublishPlan
-  {
-    /// `workspace_dir` - This is the root directory of your workspace, containing all the Rust crates
-    /// that make up your package. It is used to locate the packages within your workspace that are meant
-    /// to be published. The value here is represented by `CrateDir` which indicates the directory of the crate.
-    pub workspace_dir : CrateDir,
-
-    /// `base_temp_dir` - This is used for any temporary operations during the publication process, like
-    /// building the package or any other processes that might require the storage of transient data. It's
-    /// optional as not all operations will require temporary storage. The type used is `PathBuf` which allows
-    /// manipulation of the filesystem paths.
-    pub base_temp_dir : Option< PathBuf >,
-    
-    /// Release channels for rust.
-    pub channel : Channel,
-
-    /// `dry` - A boolean value indicating whether to do a dry run. If set to `true`, the application performs
-    /// a simulated run without making any actual changes. If set to `false`, the operations are actually executed.
-    /// This property is optional and defaults to `true`.
-    #[ former( default = true ) ]
-    pub dry : bool,
-
-    /// Required for tree view only
-    pub roots : Vec< CrateDir >,
-
-    /// `plans` - This is a vector containing the instructions for publishing each package. Each item
-    /// in the `plans` vector indicates a `PackagePublishInstruction` set for a single package. It outlines
-    /// how to build and where to publish the package amongst other instructions. The `#[setter( false )]`
-    /// attribute indicates that there is no setter method for the `plans` variable and it can only be modified
-    /// within the struct.
-    #[ scalar( setter = false ) ]
-    pub plans : Vec< PackagePublishInstruction >,
-  }
-
-  impl PublishPlan
-  {
-    /// Displays a tree-like structure of crates and their dependencies.
-    ///
-    /// # Arguments
-    ///
-    /// * `f` - A mutable reference to a `Formatter` used for writing the output.
-    ///
-    /// # Errors
-    ///
-    /// Returns a `std::fmt::Error` if there is an error writing to the formatter.
-    pub fn write_as_tree< W >( &self, f : &mut W ) -> std::fmt::Result
-    where
-      W : std::fmt::Write
-    {
-      let name_bump_report = self
-      .plans
-      .iter()
-      .map( | x | ( &x.package_name, ( x.version_bump.old_version.to_string(), x.version_bump.new_version.to_string() ) ) )
-      .collect::< HashMap< _, _ > >();
-      for wanted in &self.roots
-      {
-        let list = action::list
-        (
-          action::list::ListOptions::former()
-          .path_to_manifest( wanted.clone() )
-          .format( action::list::ListFormat::Tree )
-          .dependency_sources([ action::list::DependencySource::Local ])
-          .dependency_categories([ action::list::DependencyCategory::Primary ])
-          .form()
-        )
-        .map_err( |( _, _e )| std::fmt::Error )?;
-        let action::list::ListReport::Tree( list ) = list else { unreachable!() };
-
-        fn callback( name_bump_report : &HashMap< &String, ( String, String ) >, mut r : action::list::ListNodeReport ) -> action::list::ListNodeReport
-        {
-          if let Some(( old, new )) = name_bump_report.get( &r.name )
-          {
-            r.version = Some( format!( "({old} -> {new})" ) );
-          }
-          r.normal_dependencies = r.normal_dependencies.into_iter().map( | r | callback( name_bump_report, r ) ).collect();
-          r.dev_dependencies = r.dev_dependencies.into_iter().map( | r | callback( name_bump_report, r ) ).collect();
-          r.build_dependencies = r.build_dependencies.into_iter().map( | r | callback( name_bump_report, r ) ).collect();
-
-          r
-        }
-        let list = list.into_iter().map( | r | callback( &name_bump_report, r ) ).collect();
-
-        let list = action::list::ListReport::Tree( list );
-        writeln!( f, "{}", list )?;
-      }
-
-      Ok( () )
-    }
-
-    /// Format and display the list of packages and their version bumps in a formatted way.
-    ///
-    /// # Arguments
-    ///
-    /// - `f`: A mutable reference to a `Formatter` where the output will be written to.
-    ///
-    /// # Errors
-    ///
-    /// Returns a `std::fmt::Error` if there is an error writing to the formatter.
-    pub fn write_as_list< W >( &self, f : &mut W ) -> std::fmt::Result
-    where
-      W : std::fmt::Write
-    {
-      for ( idx, package ) in self.plans.iter().enumerate()
-      {
-        let bump = &package.version_bump;
-        writeln!( f, "[{idx}] {} ({} -> {})", package.package_name, bump.old_version, bump.new_version )?;
+        .map_err( | _ | PackageError::WorkspacePackageRef ),
       }
-
-      Ok( () )
-    }
-  }
-
-  impl PublishPlanFormer
-  {
-    pub fn option_base_temp_dir( mut self, path : Option< PathBuf > ) -> Self
-    {
-      self.storage.base_temp_dir = path;
-      self
-    }
-
-    pub fn package< IntoPackage >( mut self, package : IntoPackage ) -> Self
-    where
-      IntoPackage : Into< Package >,
-    {
-      let channel = self.storage.channel.unwrap_or_default();
-      let mut plan = PublishSinglePackagePlanner::former();
-      if let Some( workspace ) = &self.storage.workspace_dir
-      {
-        plan = plan.workspace_dir( workspace.clone() );
-      }
-      if let Some( base_temp_dir ) = &self.storage.base_temp_dir
-      {
-        plan = plan.base_temp_dir( base_temp_dir.clone() );
-      }
-      if let Some( dry ) = self.storage.dry
-      {
-        plan = plan.dry( dry );
-      }
-      let plan = plan
-      .channel( channel )
-      .package( package )
-      .perform();
-      let mut plans = self.storage.plans.unwrap_or_default();
-      plans.push( plan );
-
-      self.storage.plans = Some( plans );
-
-      self
-    }
-
-    pub fn packages< IntoPackageIter, IntoPackage >( mut self, packages : IntoPackageIter ) -> Self
-    where
-      IntoPackageIter : IntoIterator< Item = IntoPackage >,
-      IntoPackage : Into< Package >,
-    {
-      for package in packages
-      {
-        self = self.package( package );
-      }
-
-      self
-    }
-  }
-
-
-  /// Perform publishing of multiple packages based on the provided publish plan.
-  ///
-  /// # Arguments
-  ///
-  /// * `plan` - The publish plan with details of packages to be published.
-  ///
-  /// # Returns
-  ///
-  /// Returns a `Result` containing a vector of `PublishReport` if successful, else an error.
-  pub fn perform_packages_publish( plan : PublishPlan ) -> Result< Vec< PublishReport > >
-  {
-    let mut report = vec![];
-    for package in plan.plans
-    {
-      let res = perform_package_publish( package ).map_err( |( current_rep, e )| format_err!( "{}\n{current_rep}\n{e}", report.iter().map( | r | format!( "{r}" ) ).join( "\n" ) ) )?;
-      report.push( res );
     }
 
-    Ok( report )
-  }
-
-  /// Holds information about the publishing process.
-  #[ derive( Debug, Default, Clone ) ]
-  pub struct PublishReport
-  {
-    /// Retrieves information about the package.
-    pub get_info : Option< process::Report >,
-    /// Indicates whether publishing is required for the package.
-    pub publish_required : bool,
-    /// Bumps the version of the package.
-    pub bump : Option< version::ExtendedBumpReport >,
-    /// Report of adding changes to the Git repository.
-    pub add : Option< process::Report >,
-    /// Report of committing changes to the Git repository.
-    pub commit : Option< process::Report >,
-    /// Report of pushing changes to the Git repository.
-    pub push : Option< process::Report >,
-    /// Report of publishes the package using the `cargo publish` command.
-    pub publish : Option< process::Report >,
-  }
-
-  impl std::fmt::Display for PublishReport
-  {
-    fn fmt( &self, f : &mut Formatter< '_ > ) -> std::fmt::Result
-    {
-      let PublishReport
-      {
-        get_info,
-        publish_required,
-        bump,
-        add,
-        commit,
-        push,
-        publish,
-      } = self;
-
-      if get_info.is_none()
-      {
-        f.write_str( "Empty report" )?;
-        return Ok( () )
-      }
-      let info = get_info.as_ref().unwrap();
-      write!( f, "{}", info )?;
-
-      if !publish_required
-      {
-        f.write_str( "The package has no changes, so no publishing is required" )?;
-        return Ok( () )
-      }
-
-      if let Some( bump ) = bump
-      {
-        writeln!( f, "{}", bump )?;
-      }
-      if let Some( add ) = add
-      {
-        write!( f, "{add}" )?;
-      }
-      if let Some( commit ) = commit
-      {
-        write!( f, "{commit}" )?;
-      }
-      if let Some( push ) = push
-      {
-        write!( f, "{push}" )?;
-      }
-      if let Some( publish ) = publish
-      {
-        write!( f, "{publish}" )?;
-      }
-
-      Ok( () )
-    }
-  }
-
-  /// Sorting variants for dependencies.
-  #[ derive( Debug, Copy, Clone ) ]
-  pub enum DependenciesSort
-  {
-    /// List will be topologically sorted.
-    Topological,
-    /// List will be unsorted.
-    Unordered,
-  }
-
-  #[ derive( Debug, Clone ) ]
-  /// Args for `local_dependencies` function.
-  pub struct DependenciesOptions
-  {
-    /// With dependencies of dependencies.
-    pub recursive : bool,
-    /// With sorting.
-    pub sort : DependenciesSort,
-    /// Include dev dependencies.
-    pub with_dev : bool,
-    /// Include remote dependencies.
-    pub with_remote : bool,
-  }
-
-  impl Default for DependenciesOptions
-  {
-    fn default() -> Self
-    {
-      Self
-      {
-        recursive : true,
-        sort : DependenciesSort::Unordered,
-        with_dev : false,
-        with_remote : false,
-      }
-    }
-  }
-
-  //
-
-  /// Identifier of any crate(local and remote)
-  #[ derive( Debug, Clone, Hash, Eq, PartialEq ) ]
-  pub struct CrateId
-  {
-    /// TODO : make it private
-    pub name : String,
-    /// TODO : make it private
-    pub path : Option< AbsolutePath >,
-  }
-
-  impl From< &WorkspacePackage > for CrateId
-  {
-    fn from( value : &WorkspacePackage ) -> Self
-    {
-      Self
-      {
-        name : value.name().clone(),
-        path : Some( AbsolutePath::try_from( value.manifest_path().parent().unwrap() ).unwrap() ),
-      }
-    }
-  }
-
-  impl From< &workspace::Dependency > for CrateId
-  {
-    fn from( value : &workspace::Dependency ) -> Self
-    {
-      Self
-      {
-        name : value.name().clone(),
-        path : value.path().clone().map( | path | AbsolutePath::try_from( path ).unwrap() ),
-      }
-    }
-  }
-
-  /// Recursive implementation of the `dependencies` function
-  pub fn _dependencies
-  (
-    workspace : &mut Workspace,
-    manifest : &Package,
-    graph : &mut HashMap< CrateId, HashSet< CrateId > >,
-    opts : DependenciesOptions
-  ) -> Result< CrateId >
-  {
-    let DependenciesOptions
-    {
-      recursive,
-      sort : _,
-      with_dev,
-      with_remote,
-    } = opts;
-    if recursive && with_remote { unimplemented!( "`recursive` + `with_remote` options") }
-
-    let manifest_path = &manifest.manifest_path();
-
-    let package = workspace
-    .load()?
-    .package_find_by_manifest( &manifest_path )
-    .ok_or( format_err!( "Package not found in the workspace with path : `{}`", manifest_path.as_ref().display() ) )?;
-
-    let deps = package
-    .dependencies()
-    .iter()
-    .filter( | dep | ( with_remote || dep.path().is_some() ) && ( with_dev || dep.kind() != workspace::DependencyKind::Development ) )
-    .map( CrateId::from )
-    .collect::< HashSet< _ > >();
-
-    let package = CrateId::from( &package );
-    graph.insert( package.clone(), deps.clone() );
-
-    if recursive
-    {
-      for dep in deps
-      {
-        if graph.get( &dep ).is_none()
-        {
-          // unwrap because `recursive` + `with_remote` not yet implemented
-          _dependencies( workspace, &dep.path.as_ref().unwrap().join( "Cargo.toml" ).try_into().unwrap(), graph, opts.clone() )?;
-        }
-      }
-    }
-
-    Ok( package )
-  }
-
-  /// Returns local dependencies of a specified package by its manifest path from a workspace.
-  ///
-  /// # Arguments
-  ///
-  /// - `workspace` - holds cached information about the workspace, such as the packages it contains and their dependencies. By passing it as a mutable reference, function can update the cache as needed.
-  /// - `manifest` - The package manifest file contains metadata about the package such as its name, version, and dependencies.
-  /// - `opts` - used to specify options or configurations for fetching local dependencies.
-  ///
-  /// # Returns
-  ///
-  /// If the operation is successful, returns a vector of `PathBuf` objects, where each `PathBuf` represents the path to a local dependency of the specified package.
-  pub fn dependencies( workspace : &mut Workspace, manifest : &Package, opts : DependenciesOptions ) -> Result< Vec< CrateId > >
-  {
-    let mut graph = HashMap::new();
-    let root = _dependencies( workspace, manifest, &mut graph, opts.clone() )?;
-
-    let output = match opts.sort
-    {
-      DependenciesSort::Unordered =>
-      {
-        graph
-        .into_iter()
-        .flat_map( | ( id, dependency ) |
-        {
-          dependency
-          .into_iter()
-          .chain( Some( id ) )
-        })
-        .unique()
-        .filter( | x | x != &root )
-        .collect()
-      }
-      DependenciesSort::Topological =>
-      {
-        graph::toposort( graph::construct( &graph ) ).map_err( | err | format_err!( "{}", err ) )?.into_iter().filter( | x | x != &root ).collect()
-      },
-    };
-
-    Ok( output )
   }
 
   //
@@ -934,9 +204,9 @@ mod private
   /// - `true` if the package needs to be published.
   /// - `false` if there is no need to publish the package.
   ///
-  /// Panics if the manifest is not loaded or local package is not packed.
+  /// Panics if the package is not loaded or local package is not packed.
 
-  pub fn publish_need( package : &Package, path : Option< PathBuf > ) -> Result< bool, PackageError >
+  pub fn publish_need< 'a >( package : &Package< 'a >, path : Option< path::PathBuf > ) -> Result< bool, PackageError >
   {
     let name = package.name()?;
     let version = package.version()?;
@@ -944,8 +214,6 @@ mod private
     .map( | p | p.join( format!( "package/{0}-{1}.crate", name, version ) ) )
     .unwrap_or( packed_crate::local_path( &name, &version, package.crate_dir() ).map_err( | _ | PackageError::LocalPath )? );
 
-    // aaa : for Bohdan : bad, properly handle errors
-    // aaa : return result instead of panic
     let local_package = CrateArchive::read( local_package_path ).map_err( | _ | PackageError::ReadArchive )?;
     let remote_package = match CrateArchive::download_crates_io( name, version )
     {
@@ -955,8 +223,9 @@ mod private
       _ => return Err( PackageError::LoadRemotePackage ),
     };
 
-    Ok( crate_diff( &local_package, &remote_package ).exclude( diff::PUBLISH_IGNORE_LIST ).has_changes() )
+    Ok( diff::crate_diff( &local_package, &remote_package ).exclude( diff::PUBLISH_IGNORE_LIST ).has_changes() )
   }
+
 }
 
 //
@@ -964,20 +233,10 @@ mod private
 crate::mod_interface!
 {
 
-  protected use PublishSinglePackagePlanner;
-  protected use PublishPlan;
-  protected use perform_package_publish;
-  protected use perform_packages_publish;
-
-  protected use PublishReport;
-  protected use Package;
+  exposed use Package;
+  protected use PackageName;
   protected use PackageError;
 
   protected use publish_need;
 
-  protected use CrateId;
-  protected use DependenciesSort;
-  protected use DependenciesOptions;
-  protected use dependencies;
-
 }
diff --git a/module/move/willbe/src/entity/package_md_extension.rs b/module/move/willbe/src/entity/package_md_extension.rs
new file mode 100644
index 0000000000..1cc03998c7
--- /dev/null
+++ b/module/move/willbe/src/entity/package_md_extension.rs
@@ -0,0 +1,152 @@
+/// Internal namespace.
+pub( crate ) mod private
+{
+  use crate::*;
+
+  /// Md's extension for workspace
+  pub trait PackageMdExtension
+  {
+    /// Package name
+    fn name( &self ) -> Result< &str, package::PackageError >;
+
+    /// Stability
+    fn stability( &self ) -> Result< action::readme_health_table_renew::Stability, package::PackageError >;
+
+    /// Repository
+    fn repository( &self ) -> Result< Option< String >, package::PackageError >;
+
+    /// Discord url
+    fn discord_url( &self ) -> Result< Option< String >, package::PackageError >;
+  }
+  
+  impl < 'a > package::Package< 'a >
+  {
+    /// Package name
+    pub fn name( &self ) -> Result< &str, package::PackageError >
+    { 
+      match self
+      { 
+        Self::Manifest( manifest ) => 
+        { 
+          // let data = manifest.data.as_ref().ok_or_else( || PackageError::Manifest( ManifestError::EmptyManifestData ) )?;
+          let data = &manifest.data;
+    
+          // Unwrap safely because of the `Package` type guarantee
+          // Ok( data[ "package" ][ "name" ].as_str().unwrap().to_string() )
+          Ok( data[ "package" ][ "name" ].as_str().unwrap() )
+        }
+        Self::WorkspacePackageRef( package ) => 
+        { 
+          Ok( package.name() )
+        }
+      }
+    }
+
+    /// Stability
+    pub fn stability( &self ) -> Result< action::readme_health_table_renew::Stability, package::PackageError >
+    {
+      // aaa : for Petro : bad : first of all it should be in trait. also there is duplicated code
+      // aaa : done
+      // aaa : for Petro : review other similar places
+      // aaa : done
+      match self
+      {
+        Self::Manifest( _ ) => 
+        {
+          // Unwrap safely because of the `Package` type guarantee
+          Ok
+          ( 
+            self.package_metadata()
+            .and_then( | m | m.get( "stability" ) )
+            .and_then( | s | s.as_str() )
+            .and_then( | s | s.parse::< action::readme_health_table_renew::Stability >().ok() )
+            .unwrap_or( action::readme_health_table_renew::Stability::Experimental ) 
+          ) 
+        }
+        Self::WorkspacePackageRef( package ) => 
+        { 
+          Ok
+          (
+            package
+            .metadata()[ "stability" ]
+            .as_str()
+            .and_then( | s | s.parse::< action::readme_health_table_renew::Stability >().ok() )
+            .unwrap_or( action::readme_health_table_renew::Stability::Experimental)
+          )
+        }
+      }
+    }
+
+    /// Repository
+    pub fn repository( &self ) -> Result< Option< String >, package::PackageError >
+    {
+      match self
+      {
+        Self::Manifest( manifest ) => 
+        { 
+          // let data = manifest.data.as_ref().ok_or_else( || PackageError::Manifest( ManifestError::EmptyManifestData ) )?;
+          let data = &manifest.data;
+    
+          // Unwrap safely because of the `Package` type guarantee
+          Ok
+          ( 
+            data[ "package" ]
+            .get( "repository" )
+            .and_then( | r | r.as_str() )
+            .map( | r | r.to_string()) 
+          )
+        }
+        Self::WorkspacePackageRef( package ) =>
+        {
+          Ok( package.repository().cloned() )
+        }
+      }
+    }
+
+    /// Discord url
+    pub fn discord_url( &self ) -> Result< Option< String >, package::PackageError >
+    { 
+      match self
+      {
+        Self::Manifest( _ ) => 
+        {
+          // let data = manifest.data.as_ref().ok_or_else( || PackageError::Manifest( ManifestError::EmptyManifestData ) )?;
+          Ok
+          ( 
+            self.package_metadata()
+            .and_then( | m | m.get( "discord_url" ) )
+            .and_then( | url | url.as_str() )
+            .map( | r | r.to_string() ) 
+          )
+        }
+        Self::WorkspacePackageRef( package ) => 
+        {
+          Ok( package.metadata()[ "discord_url" ].as_str().map( | url | url.to_string() ) )
+        }
+      }
+    }
+    
+    fn package_metadata( &self ) -> Option< &toml_edit::Item >
+    {
+      match self {
+        package::Package::Manifest( manifest ) => 
+        {
+          let data = &manifest.data;
+          
+          data[ "package" ]
+          .get( "metadata" )
+        }
+        package::Package::WorkspacePackageRef(_) => 
+        {
+          None
+        }
+      }
+    }
+  }
+}
+
+
+crate::mod_interface!
+{
+  protected use PackageMdExtension;
+}
diff --git a/module/move/willbe/src/entity/packages.rs b/module/move/willbe/src/entity/packages.rs
index 5f48b09b3f..b1a4e0d141 100644
--- a/module/move/willbe/src/entity/packages.rs
+++ b/module/move/willbe/src/entity/packages.rs
@@ -4,13 +4,14 @@ mod private
   use std::
   {
     fmt::Formatter,
-    collections::{ HashMap, HashSet },
   };
-  use workspace::WorkspacePackage;
-  use crate::workspace::Dependency;
+  use package::PackageName;
+  use collection::{ HashMap, HashSet };
 
-  /// Type aliasing for String
-  pub type PackageName = String;
+  // use workspace::WorkspacePackageRef< '_ >;
+  // use Dependency;
+
+  // aaa : poor description // aaa : removed
 
   /// A configuration struct for specifying optional filters when using the
   /// `filter` function. It allows users to provide custom filtering
@@ -22,13 +23,13 @@ mod private
     /// applied to each package, and only packages that satisfy the condition
     /// are included in the final result. If not provided, a default filter that
     /// accepts all packages is used.
-    pub package_filter : Option< Box< dyn Fn( &WorkspacePackage ) -> bool > >,
+    pub package_filter : Option< Box< dyn Fn( WorkspacePackageRef< '_ > ) -> bool > >,
 
     /// An optional dependency filtering function. If provided, this function
     /// is applied to each dependency of each package, and only dependencies
     /// that satisfy the condition are included in the final result. If not
     /// provided, a default filter that accepts all dependencies is used.
-    pub dependency_filter : Option< Box< dyn Fn( &WorkspacePackage, &Dependency ) -> bool  > >,
+    pub dependency_filter : Option< Box< dyn Fn( WorkspacePackageRef< '_ >, DependencyRef< '_ > ) -> bool  > >,
   }
 
   impl std::fmt::Debug for FilterMapOptions
@@ -71,25 +72,31 @@ mod private
   ///   which dependencies should be included in the return for that package. If not provided, all
   ///   dependencies for a package are included.
 
-  // qqq : for Bohdan : for Petro : bad. don't use PackageMetadata directly, use its abstraction only!
+  // aaa : for Bohdan : for Petro : bad. don't use PackageMetadata directly, use its abstraction only!
 
-  pub fn filter( packages : &[ WorkspacePackage ], options : FilterMapOptions ) -> HashMap< PackageName, HashSet< PackageName > >
+  pub fn filter< 'a >
+  (
+    // packages : &[ WorkspacePackageRef< '_ > ],
+    packages : impl Iterator< Item = WorkspacePackageRef< 'a > >,
+    options : FilterMapOptions,
+  )
+  -> HashMap< PackageName, HashSet< PackageName > >
   {
     let FilterMapOptions { package_filter, dependency_filter } = options;
     let package_filter = package_filter.unwrap_or_else( || Box::new( | _ | true ) );
     let dependency_filter = dependency_filter.unwrap_or_else( || Box::new( | _, _ | true ) );
     packages
-    .iter()
+    // .iter()
     .filter( | &p | package_filter( p ) )
     .map
     (
       | package |
       (
-        package.name().clone(),
+        package.name().to_string().into(),
         package.dependencies()
-        .iter()
-        .filter( | &d | dependency_filter( package, d ) )
-        .map( | d | d.name().clone() )
+        // .iter()
+        .filter( | d | dependency_filter( package, *d ) )
+        .map( | d | d.name().into() )
         .collect::< HashSet< _ > >()
       )
     )
@@ -102,7 +109,6 @@ mod private
 crate::mod_interface!
 {
 
-  protected use PackageName;
   protected use FilterMapOptions;
   protected use filter;
 
diff --git a/module/move/willbe/src/entity/packed_crate.rs b/module/move/willbe/src/entity/packed_crate.rs
index 9bf462d782..f75db6b0c7 100644
--- a/module/move/willbe/src/entity/packed_crate.rs
+++ b/module/move/willbe/src/entity/packed_crate.rs
@@ -9,7 +9,7 @@ mod private
     time::Duration,
     path::PathBuf,
   };
-  use wtools::error::{ for_app::Context, Result };
+  use error::{ untyped::Context, Result };
   use ureq::Agent;
 
   /// Returns the local path of a packed `.crate` file based on its name, version, and manifest path.
@@ -17,18 +17,17 @@ mod private
   /// # Args :
   /// - `name` - the name of the package.
   /// - `version` - the version of the package.
-  /// - `manifest_path` - path to the package `Cargo.toml` file.
+  /// - `manifest_file` - path to the package `Cargo.toml` file.
   ///
   /// # Returns :
   /// The local packed `.crate` file of the package
   pub fn local_path< 'a >( name : &'a str, version : &'a str, crate_dir : CrateDir ) -> Result< PathBuf >
   {
     let buf = format!( "package/{0}-{1}.crate", name, version );
-
-    let workspace = Workspace::with_crate_dir( crate_dir )?;
+    let workspace = Workspace::try_from( crate_dir )?;
 
     let mut local_package_path = PathBuf::new();
-    local_package_path.push( workspace.target_directory()? );
+    local_package_path.push( workspace.target_directory() );
     local_package_path.push( buf );
 
     Ok( local_package_path )
diff --git a/module/move/willbe/src/entity/progress_bar.rs b/module/move/willbe/src/entity/progress_bar.rs
new file mode 100644
index 0000000000..52e0460f48
--- /dev/null
+++ b/module/move/willbe/src/entity/progress_bar.rs
@@ -0,0 +1,108 @@
+mod private
+{
+  /// The `ProgressBar` structure is used to display progress indicators in the terminal.
+  /// It wraps the functionality of the `indicatif` library.
+  ///
+  /// This structure is only available when the `progress_bar` feature is enabled.
+  #[ cfg( feature = "progress_bar" ) ]
+  pub struct ProgressBar< 'a >
+  {
+    /// A reference to the `MultiProgress` object from the `indicatif` library, which
+    /// allows managing multiple progress bars simultaneously. This object is necessary
+    /// for coordinating the display of multiple progress bars.
+    pub( crate ) multi_progress: &'a indicatif::MultiProgress,
+    /// The `ProgressBar` object from the `indicatif` library, which represents
+    /// an individual progress indicator. It is used to update the progress state
+    /// and display it in the terminal.
+    pub( crate ) progress_bar: indicatif::ProgressBar,
+  }
+
+  #[ cfg( feature = "progress_bar" ) ]
+  impl < 'a > std::fmt::Debug for ProgressBar< 'a >
+  {
+    fn fmt( &self, f : &mut std::fmt::Formatter< '_ > ) -> std::fmt::Result
+    {
+      f.debug_struct( "ProgressBar" )
+        .finish()
+    }
+  }
+
+  /// The `MultiProgress` structure is used to manage and display multiple progress
+  /// indicators simultaneously in the terminal. It utilizes the `indicatif` library.
+  ///
+  /// This structure is only available when the `progress_bar` feature is enabled.
+  #[ cfg( feature = "progress_bar" ) ]
+  pub struct MultiProgress
+  {
+    multi_progress: indicatif::MultiProgress,
+    progress_style: indicatif::ProgressStyle,
+  }
+
+  #[ cfg( feature = "progress_bar" ) ]
+  impl MultiProgress
+  {
+    /// Creates a new `ProgressBar` instance tied to the `MultiProgress` manager.
+    /// This function initializes a new progress bar with a specified length and applies
+    /// the defined style to it.
+    ///
+    /// # Parameters
+    ///
+    /// - `variants_len`: The total length or count that the progress bar will track.
+    ///
+    /// # Returns
+    ///
+    /// A `ProgressBar` instance that can be used to update and display progress.
+    pub fn progress_bar< 'a >( &'a self, variants_len : u64 ) -> ProgressBar< 'a >
+    {
+      let progress_bar =
+        {
+          let pb = self.multi_progress.add( indicatif::ProgressBar::new( variants_len ) );
+          pb.set_style( self.progress_style.clone() );
+          pb.inc( 0 );
+          pb
+        };
+      ProgressBar
+      {
+        multi_progress : &self.multi_progress,
+        progress_bar,
+      }
+    }
+  }
+
+  #[ cfg( feature = "progress_bar" ) ]
+  impl std::fmt::Debug for MultiProgress
+  {
+    fn fmt( &self, f : &mut std::fmt::Formatter< '_ > ) -> std::fmt::Result
+    {
+      f.debug_struct( "MultiprogressProgress" )
+        .finish()
+    }
+  }
+
+
+  #[ cfg( feature = "progress_bar" ) ]
+  impl Default for MultiProgress
+  {
+    fn default() -> Self
+    {
+      Self
+      {
+        multi_progress: indicatif::MultiProgress::new(),
+        progress_style: indicatif::ProgressStyle::with_template
+          (
+            "[{elapsed_precise}] {bar:40.cyan/blue} {pos:>7}/{len:7} {msg}",
+          )
+          .unwrap()
+          .progress_chars( "##-" ),
+      }
+    }
+  }
+}
+
+crate::mod_interface!
+{
+  #[ cfg( feature = "progress_bar" ) ]
+  protected use ProgressBar;
+  #[ cfg( feature = "progress_bar" ) ]
+  protected use MultiProgress;
+}
\ No newline at end of file
diff --git a/module/move/willbe/src/entity/publish.rs b/module/move/willbe/src/entity/publish.rs
new file mode 100644
index 0000000000..ad5632782b
--- /dev/null
+++ b/module/move/willbe/src/entity/publish.rs
@@ -0,0 +1,441 @@
+mod private
+{
+  use crate::*;
+
+  use std::fmt;
+  use process_tools::process;
+  use
+  {
+    iter::Itertools,
+    error::
+    {
+      Result,
+      untyped::{ format_err, Error },
+    }
+  };
+  use error::ErrWith;
+
+  /// Represents instructions for publishing a package.
+  #[ derive( Debug, Clone ) ]
+  pub struct PackagePublishInstruction
+  {
+    /// The name of the package.
+    pub package_name : package::PackageName,
+    /// Options for packing the package using Cargo.
+    pub pack : cargo::PackOptions,
+    /// Options for bumping the package version.
+    pub bump : version::BumpOptions,
+    /// Git options related to the package.
+    pub git_options : entity::git::GitOptions,
+    /// Options for publishing the package using Cargo.
+    pub publish : cargo::PublishOptions,
+    /// Indicates whether the process should be dry-run (no actual publishing).
+    pub dry : bool,
+  }
+
+  /// Represents a planner for publishing a single package.
+  #[ derive( Debug, former::Former ) ]
+  #[ perform( fn build() -> PackagePublishInstruction ) ]
+  pub struct PublishSinglePackagePlanner< 'a >
+  {
+    workspace_dir : CrateDir,
+    package : package::Package< 'a >,
+    channel : channel::Channel,
+    base_temp_dir : Option< path::PathBuf >,
+    #[ former( default = true ) ]
+    dry : bool,
+  }
+
+  impl< 'a > PublishSinglePackagePlanner< 'a >
+  {
+    fn build( self ) -> PackagePublishInstruction
+    {
+      let crate_dir = self.package.crate_dir();
+      let workspace_root : AbsolutePath = self.workspace_dir.clone().absolute_path();
+      let pack = cargo::PackOptions
+      {
+        path : crate_dir.clone().absolute_path().inner(),
+        channel : self.channel,
+        allow_dirty : self.dry,
+        checking_consistency : !self.dry,
+        temp_path : self.base_temp_dir.clone(),
+        dry : self.dry,
+      };
+      let old_version : Version = self.package.version().as_ref().unwrap().try_into().unwrap();
+      let new_version = old_version.clone().bump();
+      // bump the package version in dependents (so far, only workspace)
+      let dependencies = vec![ CrateDir::try_from( workspace_root.clone() ).unwrap() ];
+      let bump = version::BumpOptions
+      {
+        crate_dir : crate_dir.clone(),
+        old_version : old_version.clone(),
+        new_version : new_version.clone(),
+        dependencies : dependencies.clone(),
+        dry : self.dry,
+      };
+      let git_options = entity::git::GitOptions
+      {
+        git_root : workspace_root,
+        items : dependencies.iter().chain([ &crate_dir ]).map( | d | d.clone().absolute_path().join( "Cargo.toml" ) ).collect(),
+        message : format!( "{}-v{}", self.package.name().unwrap(), new_version ),
+        dry : self.dry,
+      };
+      let publish = cargo::PublishOptions
+      {
+        path : crate_dir.clone().absolute_path().inner(),
+        temp_path : self.base_temp_dir.clone(),
+        retry_count : 2,
+        dry : self.dry,
+      };
+
+      PackagePublishInstruction
+      {
+        package_name : self.package.name().unwrap().to_string().into(),
+        pack,
+        bump,
+        git_options,
+        publish,
+        dry : self.dry,
+      }
+    }
+  }
+
+  /// `PublishPlan` manages the overall publication process for multiple packages.
+  /// It organizes the necessary details required for publishing each individual package.
+  /// This includes the workspace root directory, any temporary directories used during the process,
+  /// and the set of specific instructions for publishing each package.
+  #[ derive( Debug, former::Former, Clone ) ]
+  pub struct PublishPlan
+  {
+    /// `workspace_dir` - This is the root directory of your workspace, containing all the Rust crates
+    /// that make up your package. It is used to locate the packages within your workspace that are meant
+    /// to be published. The value here is represented by `CrateDir` which indicates the directory of the crate.
+    pub workspace_dir : CrateDir,
+
+    /// `base_temp_dir` - This is used for any temporary operations during the publication process, like
+    /// building the package or any other processes that might require the storage of transient data. It's
+    /// optional as not all operations will require temporary storage. The type used is `PathBuf` which allows
+    /// manipulation of the filesystem paths.
+    pub base_temp_dir : Option< path::PathBuf >,
+
+    /// Release channels for rust.
+    pub channel : channel::Channel,
+
+    /// `dry` - A boolean value indicating whether to do a dry run. If set to `true`, the application performs
+    /// a simulated run without making any actual changes. If set to `false`, the operations are actually executed.
+    /// This property is optional and defaults to `true`.
+    #[ former( default = true ) ]
+    pub dry : bool,
+
+    /// Required for tree view only
+    pub roots : Vec< CrateDir >,
+
+    /// `plans` - This is a vector containing the instructions for publishing each package. Each item
+    /// in the `plans` vector indicates a `PackagePublishInstruction` set for a single package. It outlines
+    /// how to build and where to publish the package amongst other instructions. The `#[setter( false )]`
+    /// attribute indicates that there is no setter method for the `plans` variable and it can only be modified
+    /// within the struct.
+    #[ scalar( setter = false ) ]
+    pub plans : Vec< PackagePublishInstruction >,
+  }
+
+  impl PublishPlan
+  {
+    /// Displays a tree-like structure of crates and their dependencies.
+    ///
+    /// # Arguments
+    ///
+    /// * `f` - A mutable reference to a `Formatter` used for writing the output.
+    ///
+    /// # Errors
+    ///
+    /// Returns a `std::fmt::Error` if there is an error writing to the formatter.
+    pub fn write_as_tree< W >( &self, f : &mut W ) -> fmt::Result
+    where
+      W : fmt::Write
+    {
+      let name_bump_report : collection::HashMap< _, _ > = self
+      .plans
+      .iter()
+      .map( | x | ( x.package_name.as_ref(), ( x.bump.old_version.to_string(), x.bump.new_version.to_string() ) ) )
+      .collect();
+      for wanted in &self.roots
+      {
+        let list = action::list
+        (
+          action::list::ListOptions::former()
+          .path_to_manifest( wanted.clone() )
+          .format( action::list::ListFormat::Tree )
+          .dependency_sources([ action::list::DependencySource::Local ])
+          .dependency_categories([ action::list::DependencyCategory::Primary ])
+          .form()
+        )
+        .map_err( |( _, _e )| fmt::Error )?;
+        let action::list::ListReport::Tree( list ) = list else { unreachable!() };
+
+        fn callback( name_bump_report : &collection::HashMap< &String, ( String, String ) >, mut r : tool::ListNodeReport ) -> tool::ListNodeReport
+        {
+          if let Some(( old, new )) = name_bump_report.get( &r.name )
+          {
+            r.version = Some( format!( "({old} -> {new})" ) );
+          }
+          r.normal_dependencies = r.normal_dependencies.into_iter().map( | r | callback( name_bump_report, r ) ).collect();
+          r.dev_dependencies = r.dev_dependencies.into_iter().map( | r | callback( name_bump_report, r ) ).collect();
+          r.build_dependencies = r.build_dependencies.into_iter().map( | r | callback( name_bump_report, r ) ).collect();
+
+          r
+        }
+        let printer = list;
+        let rep : Vec< tool::ListNodeReport > = printer.iter().map( | printer | printer.info.clone() ).collect();
+        let list: Vec< tool::ListNodeReport > = rep.into_iter().map( | r | callback( &name_bump_report, r ) ).collect();
+        let printer : Vec< tool::TreePrinter > = list.iter().map( | rep | tool::TreePrinter::new( rep ) ).collect();
+
+        let list = action::list::ListReport::Tree( printer );
+        writeln!( f, "{}", list )?;
+      }
+
+      Ok( () )
+    }
+
+    /// Format and display the list of packages and their version bumps in a formatted way.
+    ///
+    /// # Arguments
+    ///
+    /// - `f`: A mutable reference to a `Formatter` where the output will be written to.
+    ///
+    /// # Errors
+    ///
+    /// Returns a `std::fmt::Error` if there is an error writing to the formatter.
+    pub fn write_as_list< W >( &self, f : &mut W ) -> fmt::Result
+    where
+      W : fmt::Write
+    {
+      for ( idx, package ) in self.plans.iter().enumerate()
+      {
+        let bump = &package.bump;
+        writeln!( f, "[{idx}] {} ({} -> {})", package.package_name, bump.old_version, bump.new_version )?;
+      }
+
+      Ok( () )
+    }
+  }
+
+  impl< 'a > PublishPlanFormer
+  {
+    pub fn option_base_temp_dir( mut self, path : Option< path::PathBuf > ) -> Self
+    {
+      self.storage.base_temp_dir = path;
+      self
+    }
+
+    pub fn package< IntoPackage >( mut self, package : IntoPackage ) -> Self
+    where
+      IntoPackage : Into< package::Package< 'a > >,
+    {
+      let channel = self.storage.channel.unwrap_or_default();
+      let mut plan = PublishSinglePackagePlanner::former();
+      if let Some( workspace ) = &self.storage.workspace_dir
+      {
+        plan = plan.workspace_dir( workspace.clone() );
+      }
+      if let Some( base_temp_dir ) = &self.storage.base_temp_dir
+      {
+        plan = plan.base_temp_dir( base_temp_dir.clone() );
+      }
+      if let Some( dry ) = self.storage.dry
+      {
+        plan = plan.dry( dry );
+      }
+      let plan = plan
+      .channel( channel )
+      .package( package )
+      .perform();
+      let mut plans = self.storage.plans.unwrap_or_default();
+      plans.push( plan );
+
+      self.storage.plans = Some( plans );
+
+      self
+    }
+
+    pub fn packages< IntoPackageIter, IntoPackage >( mut self, packages : IntoPackageIter ) -> Self
+    where
+      IntoPackageIter : IntoIterator< Item = IntoPackage >,
+      IntoPackage : Into< package::Package< 'a > >,
+    {
+      for package in packages
+      {
+        self = self.package( package );
+      }
+
+      self
+    }
+
+  }
+
+  /// Holds information about the publishing process.
+  #[ derive( Debug, Default, Clone ) ]
+  pub struct PublishReport
+  {
+    /// Retrieves information about the package.
+    pub get_info : Option< process::Report >,
+    /// Bumps the version of the package.
+    pub bump : Option< version::ExtendedBumpReport >,
+    /// Report of adding changes to the Git repository.
+    pub add : Option< process::Report >,
+    /// Report of committing changes to the Git repository.
+    pub commit : Option< process::Report >,
+    /// Report of pushing changes to the Git repository.
+    pub push : Option< process::Report >,
+    /// Report of publishes the package using the `cargo publish` command.
+    pub publish : Option< process::Report >,
+  }
+
+  impl fmt::Display for PublishReport
+  {
+    fn fmt( &self, f : &mut fmt::Formatter< '_ > ) -> fmt::Result
+    {
+      let PublishReport
+      {
+        get_info,
+        bump,
+        add,
+        commit,
+        push,
+        publish,
+      } = self;
+
+      if get_info.is_none()
+      {
+        f.write_str( "Empty report" )?;
+        return Ok( () )
+      }
+      let info = get_info.as_ref().unwrap();
+      write!( f, "{}", info )?;
+
+      if let Some( bump ) = bump
+      {
+        writeln!( f, "{}", bump )?;
+      }
+      if let Some( add ) = add
+      {
+        write!( f, "{add}" )?;
+      }
+      if let Some( commit ) = commit
+      {
+        write!( f, "{commit}" )?;
+      }
+      if let Some( push ) = push
+      {
+        write!( f, "{push}" )?;
+      }
+      if let Some( publish ) = publish
+      {
+        write!( f, "{publish}" )?;
+      }
+
+      Ok( () )
+    }
+  }
+
+  /// Performs package publishing based on the given arguments.
+  ///
+  /// # Arguments
+  ///
+  /// * `args` - The package publishing instructions.
+  ///
+  /// # Returns
+  ///
+  /// * `Result<PublishReport>` - The result of the publishing operation, including information about the publish, version bump, and git operations.
+
+  pub fn perform_package_publish( instruction : PackagePublishInstruction ) -> ResultWithReport< PublishReport, Error >
+  {
+    let mut report = PublishReport::default();
+    let PackagePublishInstruction
+    {
+      package_name: _,
+      mut pack,
+      mut bump,
+      mut git_options,
+      mut publish,
+      dry,
+    } = instruction;
+    pack.dry = dry;
+    bump.dry = dry;
+    git_options.dry = dry;
+    publish.dry = dry;
+
+    report.get_info = Some( cargo::pack( pack ).err_with( || report.clone() )? );
+    // aaa : redundant field? // aaa : removed
+    let bump_report = version::bump( bump ).err_with( || report.clone() )?;
+    report.bump = Some( bump_report.clone() );
+    let git_root = git_options.git_root.clone();
+    let git = match entity::git::perform_git_commit( git_options )
+    {
+      Ok( git ) => git,
+      Err( e ) =>
+      {
+        version::revert( &bump_report )
+        .map_err( | le | format_err!( "Base error:\n{}\nRevert error:\n{}", e.to_string().replace( '\n', "\n\t" ), le.to_string().replace( '\n', "\n\t" ) ) )
+        .err_with( || report.clone() )?;
+        return Err(( report, e ));
+      }
+    };
+    report.add = git.add;
+    report.commit = git.commit;
+    report.publish = match cargo::publish( publish )
+    {
+      Ok( publish ) => Some( publish ),
+      Err( e ) =>
+      {
+        tool::git::reset( git_root.as_ref(), true, 1, false )
+        .map_err
+        (
+          | le |
+          format_err!( "Base error:\n{}\nRevert error:\n{}", e.to_string().replace( '\n', "\n\t" ), le.to_string().replace( '\n', "\n\t" ) )
+        )
+        .err_with( || report.clone() )?;
+        return Err(( report, e ));
+      }
+    };
+
+    let res = tool::git::push( &git_root, dry ).err_with( || report.clone() )?;
+    report.push = Some( res );
+
+    Ok( report )
+  }
+
+  /// Perform publishing of multiple packages based on the provided publish plan.
+  ///
+  /// # Arguments
+  ///
+  /// * `plan` - The publish plan with details of packages to be published.
+  ///
+  /// # Returns
+  ///
+  /// Returns a `Result` containing a vector of `PublishReport` if successful, else an error.
+  pub fn perform_packages_publish( plan : PublishPlan ) -> Result< Vec< PublishReport > >
+  {
+    let mut report = vec![];
+    for package in plan.plans
+    {
+      let res = perform_package_publish( package ).map_err( |( current_rep, e )| format_err!( "{}\n{current_rep}\n{e}", report.iter().map( | r | format!( "{r}" ) ).join( "\n" ) ) )?;
+      report.push( res );
+    }
+
+    Ok( report )
+  }
+
+}
+
+//
+
+crate::mod_interface!
+{
+  protected use PublishPlan;
+  protected use PackagePublishInstruction;
+  protected use PublishSinglePackagePlanner;
+  protected use PublishReport;
+  protected use perform_package_publish;
+  protected use perform_packages_publish;
+}
diff --git a/module/move/willbe/src/entity/test.rs b/module/move/willbe/src/entity/test.rs
index b8298d7f4e..0e4afc5c2d 100644
--- a/module/move/willbe/src/entity/test.rs
+++ b/module/move/willbe/src/entity/test.rs
@@ -1,63 +1,48 @@
 mod private
 {
 
-  // qqq : for Petro : use https://github.com/console-rs/indicatif
-
   use crate::*;
   use table::*;
+  // qqq : for Bohdan no asterisk imports, but in special cases
   use std::
   {
-    collections::{ BTreeMap, BTreeSet, HashSet },
-    fmt::Formatter,
-    sync::{ Arc, Mutex },
-    path::Path,
+    // collections,
+    fmt,
+    sync,
   };
-  use std::collections::HashMap;
-  use std::ffi::OsString;
-  use std::fmt::{ Debug, Display }; /* qqq : import only fmt here and everywhere */
-  use std::marker::PhantomData;
-  use std::path::PathBuf;
-  // aaa : for Petro : don't use cargo_metadata directly, use facade
-  // aaa : ✅
-  use colored::Colorize;
-  // qqq : for Petro : don't do micro imports
-  // qqq : for Petro : don't do micro imports
-  #[ cfg( feature = "progress_bar" ) ]
-  use indicatif::
+  use colored::Colorize as _;
+  use process_tools::process::*;
+  use error::
   {
-    MultiProgress,
-    ProgressBar,
-    ProgressStyle
+    Error,
+    untyped::format_err,
   };
-  use rayon::ThreadPoolBuilder;
-  use process_tools::process::*;
-  use wtools::error::anyhow::{ Error, format_err };
-  use wtools::iter::Itertools;
-  use wtools::error::Result;
-  use former::Former;
-  use channel::Channel;
-  use optimization::Optimization;
-  use workspace::WorkspacePackage;
-
-  /// Newtype for package name
-  #[ derive( Debug, Default, Clone ) ]
-  pub struct PackageName( String );
+  use package::PackageName;
+
+  #[ derive( Debug, Error ) ]
+  pub enum TestError
+  {
+    #[ error( "Common error: {0}" ) ]
+    Common( #[ from ] error::untyped::Error ),
+    #[ error( "Path error: {0}" ) ]
+    Path( #[ from ] PathError ),
+  }
 
   /// Represents a variant for testing purposes.
-  #[ derive( Debug, Clone, Eq, PartialEq, Ord, PartialOrd, Former ) ]
+  #[ derive( Debug, Clone, Eq, PartialEq, Ord, PartialOrd, former::Former ) ]
   pub struct TestVariant
   {
     /// Represents the channel for the test variant.
-    channel : Channel,
+    channel : channel::Channel,
     /// Represents the optimization setting for the test variant.
-    optimization : Optimization,
+    optimization : optimization::Optimization,
     /// Contains additional features or characteristics of the test variant.
-    features : BTreeSet< String >,
+    features : collection::BTreeSet<String>,
   }
 
-  impl Display for TestVariant
+  impl fmt::Display for TestVariant
   {
-    fn fmt( &self, f : &mut Formatter< '_ >) -> std::fmt::Result
+    fn fmt( &self, f : &mut fmt::Formatter< '_ >) -> fmt::Result
     {
       let features = if self.features.is_empty() { " ".to_string() } else { self.features.iter().join( " " ) };
       writeln!( f, "{} {} {}", self.optimization, self.channel, features )?;
@@ -72,9 +57,9 @@ mod private
     packages_plan : Vec< TestPackagePlan >,
   }
 
-  impl Display for TestPlan
+  impl fmt::Display for TestPlan
   {
-    fn fmt( &self, f : &mut Formatter< '_ >) -> std::fmt::Result
+    fn fmt( &self, f : &mut fmt::Formatter< '_ >) -> std::fmt::Result
     {
       writeln!( f, "Plan: " )?;
       for plan in &self.packages_plan
@@ -98,19 +83,20 @@ mod private
     /// `with_all_features` - If it's true - add to powerset one subset which contains all features.
     /// `with_none_features` - If it's true - add to powerset one empty subset.
     /// `variants_cap` - Maximum of subset in powerset
-    pub fn try_from
+    pub fn try_from< 'a >
     (
-      packages : &[ WorkspacePackage ],
-      channels : &HashSet< Channel >,
+      packages : impl core::iter::Iterator< Item = WorkspacePackageRef< 'a > >,
+      channels : &collection::HashSet< channel::Channel >,
       power : u32,
       include_features : Vec< String >,
       exclude_features : Vec< String >,
-      optimizations : &HashSet< Optimization >,
+      optimizations : &collection::HashSet< optimization::Optimization >,
       enabled_features : Vec< String >,
       with_all_features : bool,
       with_none_features : bool,
       variants_cap : u32,
-    ) -> Result< Self >
+    )
+    -> Result< Self, TestError >
     {
       let mut packages_plan = vec![];
       for package in packages
@@ -142,17 +128,18 @@ mod private
   #[ derive( Debug ) ]
   pub struct TestPackagePlan
   {
-    enabled_features : BTreeSet< String >,
-    package : PathBuf,
-    test_variants : BTreeSet< TestVariant >,
+    enabled_features : collection::BTreeSet< String >,
+    // package : PathBuf,
+    crate_dir : CrateDir,
+    test_variants : collection::BTreeSet< TestVariant >,
   }
 
-  impl Display for TestPackagePlan
+  impl fmt::Display for TestPackagePlan
   {
-    fn fmt( &self, f : &mut Formatter< '_ >) -> std::fmt::Result
+    fn fmt( &self, f : &mut fmt::Formatter< '_ >) -> std::fmt::Result
     {
-      writeln!( f, "Package : {}\nThe tests will be executed using the following configurations :", self.package.file_name().unwrap().to_string_lossy() )?;
-      let mut all_features = BTreeSet::new();
+      writeln!( f, "Package : {}\nThe tests will be executed using the following configurations :", self.crate_dir.clone().absolute_path() )?;
+      let mut all_features = collection::BTreeSet::new();
       for variant in &self.test_variants
       {
         let features = variant.features.iter().cloned();
@@ -216,22 +203,24 @@ mod private
     /// `with_all_features` - If it's true - add to powerset one subset which contains all features.
     /// `with_none_features` - If it's true - add to powerset one empty subset.
     /// `variants_cap` - Maximum of subset in powerset
-    fn try_from
+    fn try_from< 'a >
     (
-      package : &WorkspacePackage,
-      channels : &HashSet< Channel >,
+      package : WorkspacePackageRef< 'a >,
+      channels : &collection::HashSet< channel::Channel >,
       power : u32,
       include_features : &[ String ],
       exclude_features : &[ String ],
-      optimizations : &HashSet< Optimization >,
+      optimizations : &collection::HashSet< optimization::Optimization >,
       enabled_features : &[ String ],
       with_all_features : bool,
       with_none_features : bool,
       variants_cap : u32,
-    ) -> Result< Self >
+    )
+    -> Result< Self, TestError >
     {
-      let dir = package.manifest_path().parent().unwrap().as_std_path().to_path_buf();
-      let mut test_variants = BTreeSet::new();
+      // let crate_dir = package.manifest_file().parent().unwrap().as_std_path().to_path_buf();
+      let crate_dir = package.crate_dir()?;
+      let mut test_variants = collection::BTreeSet::new();
       let features_powerset = features::features_powerset
       (
         package,
@@ -266,14 +255,22 @@ mod private
         Self
         {
           enabled_features: enabled_features.iter().cloned().collect(),
-          package : dir,
+          crate_dir,
           test_variants,
         }
       )
     }
   }
 
-  fn generate_features_cells( ff : &mut Vec< String >, variant : &TestVariant, row : &mut Row, mut counter : usize, mut flag : bool, enabled_features : &BTreeSet< String > )
+  fn generate_features_cells
+  (
+    ff : &mut Vec< String >,
+    variant : &TestVariant,
+    row : &mut Row,
+    mut counter : usize,
+    mut flag : bool,
+    enabled_features : &collection::BTreeSet< String >
+  )
   {
     for feature in ff
     {
@@ -296,29 +293,20 @@ mod private
     }
   }
 
-  #[ derive( Debug, Former ) ]
+  #[ derive( Debug, former::Former ) ]
   pub struct PackageTestOptions< 'a >
   {
-    temp_path : Option< PathBuf >,
+    temp_path : Option< path::PathBuf >,
     plan : &'a TestPackagePlan,
     dry : bool,
-    progress_bar_feature : Option< PackageTestOptionsProgressBarFeature< 'a > >,
-  }
-
-  #[ derive( Debug ) ]
-  struct PackageTestOptionsProgressBarFeature< 'a >
-  {
-    phantom : PhantomData< &'a () >,
-    #[ cfg( feature = "progress_bar" ) ]
-    multi_progress : &'a Option< &'a MultiProgress >,
+    with_progress : bool,
     #[ cfg( feature = "progress_bar" ) ]
-    progress_bar : &'a Option< ProgressBar >
+    progress_bar : progress_bar::ProgressBar< 'a >
   }
 
-
   impl PackageTestOptionsFormer< '_ >
   {
-    pub fn option_temp(  mut self, value : impl Into< Option< PathBuf > > ) -> Self
+    pub fn option_temp( mut self, value : impl Into< Option< path::PathBuf > > ) -> Self
     {
       self.storage.temp_path = value.into();
       self
@@ -326,14 +314,14 @@ mod private
   }
 
   /// Represents the options for the test.
-  #[ derive( Debug, Former, Clone ) ]
+  #[ derive( Debug, former::Former, Clone ) ]
   pub struct SingleTestOptions
   {
     /// Specifies the release channels for rust.
     /// More details : https://rust-lang.github.io/rustup/concepts/channels.html#:~:text=Rust%20is%20released%20to%20three,releases%20are%20made%20every%20night.
-    channel : Channel,
+    channel : channel::Channel,
     /// Specifies the optimization for rust.
-    optimization : Optimization,
+    optimization : optimization::Optimization,
     /// Determines whether to use default features in the test.
     /// Enabled by default.
     #[ former( default = true ) ]
@@ -343,9 +331,9 @@ mod private
     #[ former( default = false ) ]
     with_all_features : bool,
     /// Specifies a list of features to be enabled in the test.
-    enable_features : BTreeSet< String >,
+    enable_features : collection::BTreeSet< String >,
     /// Temp directory path
-    temp_directory_path : Option< PathBuf >,
+    temp_directory_path : Option< path::PathBuf >,
     /// A boolean indicating whether to perform a dry run or not.
     dry : bool,
     /// RUST_BACKTRACE
@@ -357,15 +345,17 @@ mod private
   {
     fn as_rustup_args( &self ) -> Vec< String >
     {
-      debug_assert!( !self.with_default_features ); // qqq : remove later
-      debug_assert!( !self.with_all_features ); // qqq : remove later
+      debug_assert!( !self.with_default_features ); // aaa : remove later
+      debug_assert!( !self.with_all_features ); // aaa : remove later
       [ "run".into(), self.channel.to_string(), "cargo".into(), "test".into() ]
       .into_iter()
-      .chain( if self.optimization == Optimization::Release { Some( "--release".into() ) } else { None } )
+      .chain( if self.optimization == optimization::Optimization::Release { Some( "--release".into() ) } else { None } )
       .chain( if self.with_default_features { None } else { Some( "--no-default-features".into() ) } )
-      // qqq : for Petro : bad, --no-default-features is always enabled!
+      // aaa : for Petro : bad, --no-default-features is always enabled!
+      // aaa : add `debug_assert!( !self.with_default_features )`
       .chain( if self.with_all_features { Some( "--all-features".into() ) } else { None } )
-      // qqq : for Petro : bad, --all-features is always disabled!
+      // aaa : for Petro : bad, --all-features is always disabled!
+      // aaa : add `debug_assert!( !self.with_all_features )`
       .chain( if self.enable_features.is_empty() { None } else { Some([ "--features".into(), self.enable_features.iter().join( "," ) ]) }.into_iter().flatten() )
       .chain( self.temp_directory_path.clone().map( | p | vec![ "--target-dir".to_string(), p.to_string_lossy().into() ] ).into_iter().flatten() )
       .collect()
@@ -385,13 +375,11 @@ mod private
   /// Returns a `Result` containing a `Report` if the command is executed successfully,
   /// or an error if the command fails to execute.
   pub fn _run< P >( path : P, options : SingleTestOptions ) -> Result< Report, Report >
+  // xxx
   where
-    P : AsRef< Path >
+    P : AsRef< path::Path >
   {
     let ( program, args ) = ( "rustup", options.as_rustup_args() );
-    // qqq : for Petro : rustup ???
-    // aaa : for Petro : RUST_BACKTRACE=1 ?? //  add to SingleTestOptions, by default true
-    // aaa : add
 
     if options.dry
     {
@@ -409,10 +397,10 @@ mod private
     }
     else
     {
-      let envs = if options.backtrace { [( "RUST_BACKTRACE".to_string(), "full".to_string() )].into_iter().collect() } else { HashMap::new() };
+      let envs = if options.backtrace { [( "RUST_BACKTRACE".to_string(), "full".to_string() )].into_iter().collect() } else { collection::HashMap::new() };
       Run::former()
       .bin_path( program )
-      .args( args.into_iter().map( OsString::from ).collect::< Vec< _ > >() )
+      .args( args.into_iter().map( std::ffi::OsString::from ).collect::< Vec< _ > >() )
       .current_path( path.as_ref().to_path_buf() )
       .joining_streams( true )
       .env_variable( envs )
@@ -421,7 +409,7 @@ mod private
   }
 
   /// `TestOptions` is a structure used to store the arguments for tests.
-  #[ derive( Former ) ]
+  #[ derive( former::Former ) ]
   pub struct TestOptions
   {
     /// Plan for testing
@@ -431,40 +419,22 @@ mod private
     pub concurrent : u32,
 
     /// `temp_path` - path to temp directory.
-    pub temp_path : Option< PathBuf >,
+    pub temp_path : Option< path::PathBuf >,
 
     /// A boolean indicating whether to perform a dry run or not.
     pub dry : bool,
 
-    /// This field contains fields for progress_bar feature
-    pub feature : Option< TestOptionsProgressBarFeature >,
+    /// Progress bar flag.
+    pub with_progress : bool,
   }
 
-  // qqq : for Petro : remove after Former fix
-  /// Structure for progress bar feature field
-  pub struct TestOptionsProgressBarFeature
-  {
-    #[ cfg( feature = "progress_bar" ) ]
-    /// Base progress bar
-    pub multiprocess : MultiProgress,
-
-    #[ cfg( feature = "progress_bar" ) ]
-    /// Style for progress bar
-    pub style : ProgressStyle,
-  }
+  // aaa : for Petro : remove after Former fix
+  // aaa : done
 
-  impl Debug for TestOptionsProgressBarFeature
+  impl fmt::Debug for TestOptions
   {
-    fn fmt( &self, f : &mut Formatter< '_ >) -> std::fmt::Result
+    fn fmt( &self, f : &mut fmt::Formatter< '_ > ) -> std::fmt::Result
     {
-      f.debug_struct( "TestOptionsProgressBarFeature" )
-      .finish()
-    }
-  }
-
-  impl Debug for TestOptions
-  {
-    fn fmt( &self, f : &mut Formatter< '_ >) -> std::fmt::Result {
       f.debug_struct( "TestOptions" )
       .field( "plan", &self.plan)
       .field( "concurrent", &self.concurrent)
@@ -476,7 +446,7 @@ mod private
 
   impl TestOptionsFormer
   {
-    pub fn option_temp(  mut self, value : impl Into< Option< PathBuf > > ) -> Self
+    pub fn option_temp(  mut self, value : impl Into< Option< path::PathBuf > > ) -> Self
     {
       self.storage.temp_path = value.into();
       self
@@ -505,15 +475,14 @@ mod private
     ///   for which the tests were run, and the values are nested `BTreeMap` where the keys are
     ///   feature names and the values are `Report` structs representing the test results for
     ///   the specific feature and channel.
-    pub tests : BTreeMap< TestVariant, Result< Report, Report > > ,
+    pub tests : collection::BTreeMap< TestVariant, Result< Report, Report > >,
     /// Enabled features
-    pub enabled_features : BTreeSet< String >,
-    // qqq : for Petro : rid off map of map of map, keep flat map
+    pub enabled_features : collection::BTreeSet<String>,
   }
 
-  impl Display for TestReport
+  impl fmt::Display for TestReport
   {
-    fn fmt( &self, f : &mut Formatter< '_ > ) -> std::fmt::Result
+    fn fmt( &self, f : &mut fmt::Formatter< '_ > ) -> std::fmt::Result
     {
       if self.dry
       {
@@ -521,7 +490,7 @@ mod private
       }
       let mut failed = 0;
       let mut success = 0;
-      let mut all_features = BTreeSet::new();
+      let mut all_features = collection::BTreeSet::new();
       for variant in self.tests.keys()
       {
         let features = variant.features.iter().cloned();
@@ -550,7 +519,7 @@ mod private
       }
       table.set_header( header_row );
 
-      writeln!( f, "{} {}\n", "\n=== Module".bold(), self.package_name.0.bold() )?;
+      writeln!( f, "{} {}\n", "\n=== Module".bold(), self.package_name.bold() )?;
       if self.tests.is_empty()
       {
         writeln!( f, "unlucky" )?;
@@ -628,16 +597,17 @@ mod private
     pub failure_reports : Vec< TestReport >,
   }
 
-  impl Display for TestsReport
+  impl fmt::Display for TestsReport
   {
-    fn fmt( &self, f : &mut Formatter< '_ > ) -> std::fmt::Result
+    fn fmt( &self, f : &mut fmt::Formatter< '_ > ) -> std::fmt::Result
     {
-      if self.dry
-      {
-        writeln!( f, "\nYou can execute the plan with 'will .test dry : 0'." )?;
-        // qqq : for Petro : bad. should be exact command with exact parameters / при виклику зовнішніх команд повинен бути вивід у консоль про цей виклик і його аргументи за виключенням коли ційлий блок виводу прихований (у моєму випадку при фейлі)
-        return Ok( () )
-      }
+      // if self.dry
+      // {
+      //   writeln!( f, "\nYou can execute the plan with 'will .test dry : 0'." )?;
+      //   // aaa : for Petro : bad. should be exact command with exact parameters / при виклику зовнішніх команд повинен бути вивід у консоль про цей виклик і його аргументи за виключенням коли ційлий блок виводу прихований (у моєму випадку при фейлі)
+      //   // aaa : coment in because its redundant, this behavior already implemented
+      // return Ok( () )
+      // }
       if self.success_reports.is_empty() && self.failure_reports.is_empty()
       {
         writeln!( f, "The tests have not been run."  )?;
@@ -668,13 +638,13 @@ mod private
 
   /// `tests_run` is a function that runs tests on a given package with specified arguments.
   /// It returns a `TestReport` on success, or a `TestReport` and an `Error` on failure.
-  pub fn run( options : &PackageTestOptions< '_ > ) -> Result< TestReport, ( TestReport, Error ) >
+  pub fn run( options : &PackageTestOptions< '_ > ) -> Result< TestReport, ( TestReport, TestError ) >
   {
     let mut report = TestReport::default();
     report.dry = options.dry;
     report.enabled_features = options.plan.enabled_features.clone();
-    let report = Arc::new( Mutex::new( report ) );
-    let dir = options.plan.package.clone();
+    let report = sync::Arc::new( sync::Mutex::new( report ) );
+    let crate_dir = options.plan.crate_dir.clone();
 
     rayon::scope
     (
@@ -684,7 +654,7 @@ mod private
         {
           let TestVariant{ channel, optimization, features } = variant;
           let r = report.clone();
-          let dir = dir.clone();
+          let crate_dir = crate_dir.clone();
           s.spawn
           (
             move | _ |
@@ -698,33 +668,29 @@ mod private
 
               if let Some( p ) = options.temp_path.clone()
               {
-                let path = p.join( path_tools::path::unique_folder_name().unwrap() );
-                // qqq : for Petro : rid off unwrap
+                let path = p.join( path::unique_folder_name().unwrap() );
                 std::fs::create_dir_all( &path ).unwrap();
                 args_t = args_t.temp_directory_path( path );
               }
               #[ cfg( feature = "progress_bar" ) ]
-              let _s =
+              if options.with_progress
               {
-                let s = if let Some( multi_progress ) = options.progress_bar_feature.as_ref().and_then( | f | f.multi_progress.as_ref() )
+                let _s =
                 {
-                  let s = multi_progress.add( ProgressBar::new_spinner().with_message( format!( "{}", variant ) ) );
+                  let s = options.progress_bar.multi_progress.add( indicatif::ProgressBar::new_spinner().with_message( format!( "{}", variant ) ) );
                   s.enable_steady_tick( std::time::Duration::from_millis( 100 ) );
-                  Some( s )
-                }
-                else
-                {
-                  None
+                  s
                 };
-                // spinner.enable_steady_tick( std::time::Duration::from_millis( 100 ) );
-                s
-              };
+              }
               let args = args_t.form();
               let temp_dir = args.temp_directory_path.clone();
-              let cmd_rep = _run( dir, args );
+              let cmd_rep = _run( crate_dir, args );
               r.lock().unwrap().tests.insert( variant.clone(), cmd_rep );
               #[ cfg( feature = "progress_bar" ) ]
-              options.progress_bar_feature.as_ref().unwrap().progress_bar.as_ref().map( | b | b.inc( 1 ) );
+              if options.with_progress
+              {
+                options.progress_bar.progress_bar.inc( 1 );
+              }
               if let Some( path ) = temp_dir
               {
                 std::fs::remove_dir_all( path ).unwrap();
@@ -736,21 +702,25 @@ mod private
     );
 
     // unpack. all tasks must be completed until now
-    let report = Mutex::into_inner( Arc::into_inner( report ).unwrap() ).unwrap();
+    let report = sync::Mutex::into_inner( sync::Arc::into_inner( report ).unwrap() ).unwrap();
     let at_least_one_failed = report
     .tests
     .iter()
     .any( | ( _, result ) | result.is_err() );
-    if at_least_one_failed { Err( ( report, format_err!( "Some tests was failed" ) ) ) } else { Ok( report ) }
+    if at_least_one_failed { Err( ( report, format_err!( "Some tests was failed" ).into() ) ) } else { Ok( report ) }
   }
 
   /// Run tests for given packages.
-  pub fn tests_run( args : &TestOptions ) -> Result< TestsReport, ( TestsReport, Error ) >
+  pub fn tests_run( args : &TestOptions ) -> Result< TestsReport, ( TestsReport, TestError ) >
   {
+    #[ cfg( feature = "progress_bar" ) ]
+    let multi_progress = progress_bar::MultiProgress::default();
+    #[ cfg( feature = "progress_bar" ) ]
+    let mm = &multi_progress;
     let mut report = TestsReport::default();
     report.dry = args.dry;
-    let report = Arc::new( Mutex::new( report ) );
-    let pool = ThreadPoolBuilder::new().use_current_thread().num_threads( args.concurrent as usize ).build().unwrap();
+    let report = sync::Arc::new( sync::Mutex::new( report ) );
+    let pool = rayon::ThreadPoolBuilder::new().use_current_thread().num_threads( args.concurrent as usize ).build().unwrap();
     pool.scope
     (
       | s |
@@ -762,35 +732,17 @@ mod private
           (
             move | _ |
             {
+              let test_package_options = PackageTestOptions::former()
+              .option_temp( args.temp_path.clone() )
+              .plan( plan )
+              .dry( args.dry )
+              .with_progress( args.with_progress );
+
               #[ cfg( feature = "progress_bar" ) ]
-              let pb =
+              let test_package_options =
               {
-                let pb = if let Some( feature ) = args.feature.as_ref()
-                {
-                  let pb = feature.multiprocess.add(ProgressBar::new(plan.test_variants.len() as u64));
-                  pb.set_style( args.feature.as_ref().unwrap().style.clone() );
-                  pb.inc( 0 );
-                  Some( pb )
-                }
-                else
-                {
-                  None
-                };
-                pb
+                test_package_options.progress_bar( mm.progress_bar( plan.test_variants.len() as u64  ) )
               };
-              #[ cfg( feature = "progress_bar" ) ]
-              let multi_progress = args.feature.as_ref().map( | f | &f.multiprocess );
-              let test_package_options = PackageTestOptions::former().option_temp( args.temp_path.clone() ).plan( plan ).dry( args.dry );
-              #[ cfg( feature = "progress_bar" ) ]
-              let test_package_options = test_package_options.progress_bar_feature
-              (
-                PackageTestOptionsProgressBarFeature
-                {
-                  phantom : PhantomData,
-                  multi_progress : &multi_progress,
-                  progress_bar : &pb,
-                }
-              );
               let options = test_package_options.form();
               match run( &options )
               {
@@ -808,14 +760,14 @@ mod private
         }
       }
     );
-    let report = Arc::into_inner( report ).unwrap().into_inner().unwrap();
+    let report = sync::Arc::into_inner( report ).unwrap().into_inner().unwrap();
     if report.failure_reports.is_empty()
     {
       Ok( report )
     }
     else
     {
-      Err(( report, format_err!( "Some tests was failed" ) ))
+      Err(( report, format_err!( "Some tests was failed" ).into() ))
     }
   }
 }
@@ -828,12 +780,9 @@ crate::mod_interface!
   protected use _run;
 
   protected use TestPlan;
-
   protected use TestOptions;
   protected use TestReport;
   protected use TestsReport;
   protected use run;
   protected use tests_run;
-
-  protected use TestOptionsProgressBarFeature;
-}
\ No newline at end of file
+}
diff --git a/module/move/willbe/src/entity/version.rs b/module/move/willbe/src/entity/version.rs
index e3900e1d57..c911a5b7e1 100644
--- a/module/move/willbe/src/entity/version.rs
+++ b/module/move/willbe/src/entity/version.rs
@@ -12,11 +12,10 @@ mod private
   use toml_edit::value;
   use semver::Version as SemVersion;
 
-  use wtools::error::for_app::Result;
+  use error::untyped::Result;
   use manifest::Manifest;
-  use _path::AbsolutePath;
   use package::Package;
-  use wtools::{ error::anyhow::format_err, iter::Itertools };
+  use { error::untyped::format_err, iter::Itertools };
 
   /// Wrapper for a SemVer structure
   #[ derive( Debug, Clone, Eq, PartialEq, Ord, PartialOrd ) ]
@@ -109,61 +108,6 @@ mod private
     }
   }
 
-  /// Bump version by manifest.
-  /// It takes data from the manifest and increments the version number according to the semantic versioning scheme.
-  /// It then writes the updated manifest file back to the same path, unless the flag is set to true, in which case it only returns the new version number as a string.
-  ///
-  /// # Args :
-  /// - `manifest` - a manifest mutable reference
-  /// - `dry` - a flag that indicates whether to apply the changes or not
-  ///         - `true` - does not modify the manifest file, but only returns the new version;
-  ///         - `false` - overwrites the manifest file with the new version.
-  ///
-  /// # Returns :
-  /// - `Ok` - the new version number as a string;
-  /// - `Err` - if the manifest file cannot be read, written, parsed.
-  pub fn bump( manifest : &mut Manifest, dry : bool ) -> Result< BumpReport, manifest::ManifestError >
-  {
-    let mut report = BumpReport::default();
-
-    let version=
-    {
-      if manifest.manifest_data.is_none()
-      {
-        manifest.load()?;
-      }
-      let data = manifest.manifest_data.as_ref().unwrap();
-      if !manifest.package_is()?
-      {
-        return Err( manifest::ManifestError::NotAPackage );
-      }
-      let package = data.get( "package" ).unwrap();
-
-      let version = package.get( "version" );
-      if version.is_none()
-      {
-        return Err( manifest::ManifestError::CannotFindValue( "version".into() ) );
-      }
-      let version = version.unwrap().as_str().unwrap();
-      report.name = Some( package[ "name" ].as_str().unwrap().to_string() );
-      report.old_version = Some( version.to_string() );
-
-      Version::from_str( version ).map_err( | e | manifest::ManifestError::InvalidValue( e.to_string() ) )?
-    };
-
-    let new_version = version.bump().to_string();
-    report.new_version = Some( new_version.clone() );
-
-    if !dry
-    {
-      let data = manifest.manifest_data.as_mut().unwrap();
-      data[ "package" ][ "version" ] = value( &new_version );
-      manifest.store()?;
-    }
-
-    Ok( report )
-  }
-
   // qqq : we have to replace the implementation above with the implementation below, don't we?
   // qqq : for Bohdan : duplication?
 
@@ -206,7 +150,7 @@ mod private
     /// Package new version.
     pub new_version : Option< String >,
     /// Files that should(already) changed for bump.
-    pub changed_files : Vec< AbsolutePath >
+    pub changed_files : Vec< ManifestFile >
   }
 
   impl std::fmt::Display for ExtendedBumpReport
@@ -237,19 +181,22 @@ mod private
   ///
   /// # Arguments
   ///
-  /// * `args` - The options for version bumping.
+  /// * `o` - The options for version bumping.
   ///
   /// # Returns
   ///
   /// Returns a result containing the extended bump report if successful.
   ///
-  pub fn version_bump( o : BumpOptions ) -> Result< ExtendedBumpReport >
+  // qqq : should be typed error, apply err_with
+  // qqq : don't use 1-prameter Result
+  pub fn bump( o : BumpOptions ) -> Result< ExtendedBumpReport >
   {
     let mut report = ExtendedBumpReport::default();
-    let package_path = o.crate_dir.absolute_path().join( "Cargo.toml" );
-    let package = Package::try_from( package_path.clone() ).map_err( | e | format_err!( "{report:?}\n{e:#?}" ) )?;
+    // let manifest_file = o.crate_dir.inner().join( "Cargo.toml" );
+    let manifest_file = o.crate_dir.manifest_file();
+    let package = Package::try_from( manifest_file.clone() ).map_err( | e | format_err!( "{report:?}\n{e:#?}" ) )?;
     let name = package.name().map_err( | e | format_err!( "{report:?}\n{e:#?}" ) )?;
-    report.name = Some( name.clone() );
+    report.name = Some( name.into() );
     let package_version = package.version().map_err( | e | format_err!( "{report:?}\n{e:#?}" ) )?;
     let current_version = version::Version::try_from( package_version.as_str() ).map_err( | e | format_err!( "{report:?}\n{e:#?}" ) )?;
     if current_version > o.new_version
@@ -262,17 +209,20 @@ mod private
     let mut package_manifest = package.manifest().map_err( | e | format_err!( "{report:?}\n{e:#?}" ) )?;
     if !o.dry
     {
-      let data = package_manifest.manifest_data.as_mut().unwrap();
+      // let data = package_manifest.data.as_mut().unwrap();
+      let data = &mut package_manifest.data;
       data[ "package" ][ "version" ] = value( &o.new_version.to_string() );
       package_manifest.store()?;
     }
-    report.changed_files = vec![ package_path ];
+    report.changed_files = vec![ manifest_file ];
     let new_version = &o.new_version.to_string();
     for dep in &o.dependencies
     {
-      let manifest_path = dep.absolute_path().join( "Cargo.toml" );
-      let mut manifest = manifest::open( manifest_path.clone() ).map_err( | e | format_err!( "{report:?}\n{e:#?}" ) )?;
-      let data = manifest.manifest_data.as_mut().unwrap();
+      // let manifest_file = dep.absolute_path().join( "Cargo.toml" );
+      let manifest_file = dep.clone().manifest_file();
+      let mut manifest = Manifest::try_from( manifest_file.clone() ).map_err( | e | format_err!( "{report:?}\n{e:#?}" ) )?;
+      // let data = manifest.data.as_mut().unwrap();
+      let data = &mut manifest.data;
       let item = if let Some( item ) = data.get_mut( "package" ) { item }
       else if let Some( item ) = data.get_mut( "workspace" ) { item }
       else { return Err( format_err!( "{report:?}\nThe manifest nor the package and nor the workspace" ) ); };
@@ -291,7 +241,7 @@ mod private
         }
       }
       if !o.dry { manifest.store().map_err( | e | format_err!( "{report:?}\n{e:#?}" ) )?; }
-      report.changed_files.push( manifest_path );
+      report.changed_files.push( manifest_file );
     }
 
     Ok( report )
@@ -306,7 +256,8 @@ mod private
   /// # Returns
   ///
   /// Returns `Ok(())` if the version is reverted successfully. Returns `Err` with an error message if there is any issue with reverting the version.
-  pub fn version_revert( report : &ExtendedBumpReport ) -> Result< () >
+  // qqq : don't use 1-prameter Result
+  pub fn revert( report : &ExtendedBumpReport ) -> Result< () >
   {
     let Some( name ) = report.name.as_ref() else { return Ok( () ) };
     let Some( old_version ) = report.old_version.as_ref() else { return Ok( () ) };
@@ -337,7 +288,7 @@ mod private
 
     for path in &report.changed_files
     {
-      let mut manifest = manifest::open( path.clone() )?;
+      let mut manifest = Manifest::try_from( path.clone() )?;
       let data = manifest.data();
       if let Some( workspace ) = data.get_mut( "workspace" )
       {
@@ -361,6 +312,58 @@ mod private
 
     Ok( () )
   }
+
+  // qqq : for Bohdan : not used? why is it needed?
+  /// Bump version by manifest.
+  /// It takes data from the manifest and increments the version number according to the semantic versioning scheme.
+  /// It then writes the updated manifest file back to the same path, unless the flag is set to true, in which case it only returns the new version number as a string.
+  ///
+  /// # Args :
+  /// - `manifest` - a manifest mutable reference
+  /// - `dry` - a flag that indicates whether to apply the changes or not
+  ///         - `true` - does not modify the manifest file, but only returns the new version;
+  ///         - `false` - overwrites the manifest file with the new version.
+  ///
+  /// # Returns :
+  /// - `Ok` - the new version number as a string;
+  /// - `Err` - if the manifest file cannot be read, written, parsed.
+  pub fn manifest_bump( manifest : &mut Manifest, dry : bool ) -> Result< BumpReport, manifest::ManifestError >
+  {
+    let mut report = BumpReport::default();
+
+    let version=
+    {
+      let data = &manifest.data;
+      if !manifest.package_is()
+      {
+        return Err( manifest::ManifestError::NotAPackage );
+      }
+      let package = data.get( "package" ).unwrap();
+
+      let version = package.get( "version" );
+      if version.is_none()
+      {
+        return Err( manifest::ManifestError::CannotFindValue( "version".into() ) );
+      }
+      let version = version.unwrap().as_str().unwrap();
+      report.name = Some( package[ "name" ].as_str().unwrap().to_string() );
+      report.old_version = Some( version.to_string() );
+
+      Version::from_str( version ).map_err( | e | manifest::ManifestError::InvalidValue( e.to_string() ) )?
+    };
+
+    let new_version = version.bump().to_string();
+    report.new_version = Some( new_version.clone() );
+
+    if !dry
+    {
+      let data = &mut manifest.data;
+      data[ "package" ][ "version" ] = value( &new_version );
+      manifest.store()?;
+    }
+
+    Ok( report )
+  }
 }
 
 //
@@ -368,20 +371,21 @@ mod private
 crate::mod_interface!
 {
   /// Version entity.
-  protected use Version;
+  exposed use Version;
 
   /// Report for bump operation.
   protected use BumpReport;
 
-  /// Bump version.
-  protected use bump;
-
   /// Options for version bumping.
   protected use BumpOptions;
   /// Report about a changing version with list of files that was changed.
   protected use ExtendedBumpReport;
+
   /// Bumps the version of a package and its dependencies.
-  protected use version_bump;
+  protected use manifest_bump;
+  /// Bump version.
+  protected use bump;
+
   /// Reverts the version of a package.
-  protected use version_revert;
+  protected use revert;
 }
diff --git a/module/move/willbe/src/entity/workspace.rs b/module/move/willbe/src/entity/workspace.rs
index b477aa3c97..3fc37828fd 100644
--- a/module/move/willbe/src/entity/workspace.rs
+++ b/module/move/willbe/src/entity/workspace.rs
@@ -1,367 +1,296 @@
 mod private
 {
-  use std::collections::BTreeMap;
   use crate::*;
 
-  use std::path::Path;
-  use cargo_metadata::camino::{ Utf8Path, Utf8PathBuf };
-  use petgraph::Graph;
-  use serde::Deserialize;
-  use serde_json::Value;
-  use wtools::error::
+  // qqq : for Bohdan : bad
+  // use std::*;
+
+  use std::slice;
+  use former::{ Former };
+
+  /// Stores information about the current workspace.
+  #[ derive( Debug, Clone ) ]
+  pub struct Workspace
   {
-    for_app::Context,
-    for_lib::Error,
-    Result
-  };
-  use _path::AbsolutePath;
-
-  /// Facade for cargo_metadata::Package
-  #[ derive( Debug, Clone, Deserialize ) ]
-  pub struct WorkspacePackage
+    /// Metadata of the workspace, containing detailed information about the packages, dependencies, and other workspace-related data.
+    pub metadata : cargo_metadata::Metadata,
+    /// The directory containing the manifest file (`Cargo.toml`) of the workspace.
+    pub crate_dir : CrateDir,
+  }
+
+  /// Represents errors related to workspace operations.
+  #[ derive( Debug, error::typed::Error ) ]
+  pub enum WorkspaceInitError
   {
-    #[ serde( flatten ) ]
-    inner : cargo_metadata::Package
+    /// Something went wrong with path to a workspace.
+    #[ error( "Path error. Details: {0}" ) ]
+    Path( #[ from ] PathError ),
+    /// Something went wrong with the workspace' data
+    #[ error( "Can not load workspace data. Details: {0}" ) ]
+    Metadata( #[ from ] cargo_metadata::Error ),
+    /// Files error
+    #[ error( "I/O error: {0}" ) ]
+    IO( #[ from ] std::io::Error ),
   }
-  
-  impl From< cargo_metadata::Package > for WorkspacePackage
+
+  impl TryFrom< CrateDir > for Workspace
   {
-    fn from( inner : cargo_metadata::Package) -> Self 
+    type Error = WorkspaceInitError;
+
+    /// Load data from current directory
+    fn try_from( mut crate_dir : CrateDir ) -> Result< Self, Self::Error >
     {
-      Self
+      let metadata = cargo_metadata::MetadataCommand::new()
+      .current_dir( crate_dir.as_ref() )
+      .no_deps()
+      .exec()?;
+      // inout crate dir may refer on crate's manifest dir, not workspace's manifest dir
+      crate_dir = ( &metadata.workspace_root ).try_into()?;
+      Ok( Self
       {
-        inner
-      }
+        metadata,
+        crate_dir,
+      })
     }
+
   }
-  
-  impl WorkspacePackage
+
+  impl TryFrom< CurrentPath > for Workspace
   {
-    /// The name field as given in the Cargo.toml
-    pub fn name( &self ) -> &String
-    {
-      &self.inner.name
-    }
-    
-    /// List of dependencies of this particular package
-    pub fn dependencies( &self ) -> Vec< Dependency >
-    {
-      self.inner.dependencies.iter().cloned().map( Dependency::from ).collect()
-    }
-    
-    /// Path containing the Cargo.toml
-    pub fn manifest_path( &self ) -> &Utf8Path
-    {
-      self.inner.manifest_path.as_path()
-    }
-    
-    /// The version field as specified in the Cargo.toml
-    pub fn version( &self ) -> semver::Version
-    {
-      self.inner.version.clone()
-    }
-    
-    /// List of registries to which this package may be published (derived from the publish field).
-    /// Publishing is unrestricted if None, and forbidden if the Vec is empty.
-    /// This is always None if running with a version of Cargo older than 1.39.
-    pub fn publish( &self ) -> Option< &Vec< String > >
-    {
-      self.inner.publish.as_ref()
-    }
-    
-    ///Contents of the free form package.metadata section.
-    /// This contents can be serialized to a struct using serde:
-    /// ``` rust
-    /// use serde::Deserialize;
-    /// use serde_json::json;
-    /// 
-    /// #[ derive( Debug, Deserialize ) ]
-    /// struct SomePackageMetadata 
-    /// {
-    ///   some_value : i32,
-    /// }
-    /// 
-    /// fn main() 
-    /// {
-    ///   let value = json!
-    ///   ({
-    ///     "some_value" : 42,
-    ///   });
-    /// 
-    ///   let package_metadata : SomePackageMetadata = serde_json::from_value( value ).unwrap();
-    ///   assert_eq!( package_metadata.some_value, 42 );
-    /// }
-    /// ```
-    pub fn metadata( &self ) -> &Value
-    {
-      &self.inner.metadata
-    }
-    
-    /// The repository URL as specified in the Cargo.toml
-    pub fn repository( &self ) -> Option< &String >
-    {
-      self.inner.repository.as_ref()
-    }
-    
-    /// Features provided by the crate, mapped to the features required by that feature.
-    pub fn features( &self ) -> &BTreeMap< String, Vec< String > >
+    type Error = WorkspaceInitError;
+
+    /// Load data from current directory
+    fn try_from( cd : CurrentPath ) -> Result< Self, Self::Error >
     {
-      &self.inner.features
+      Self::try_from( CrateDir::transitive_try_from::< AbsolutePath >( cd )? )
     }
+
   }
-  
-  /// A dependency of the main crate
-  #[ derive( Debug ) ]
-  pub struct Dependency
+
+  impl From< cargo_metadata::Metadata > for Workspace
   {
-    inner : cargo_metadata::Dependency,
+    fn from( metadata : cargo_metadata::Metadata ) -> Self
+    {
+      // SAFE: `workspace_root` is a path to a`Cargo.toml` file, therefor the parent is the directory
+      let path = metadata.workspace_root.as_std_path().parent().unwrap().to_path_buf();
+      let crate_dir = CrateDir::try_from( path ).unwrap();
+      Self
+      {
+        metadata,
+        crate_dir,
+      }
+    }
   }
-  
-  impl Dependency
+
+  impl Workspace
   {
-    /// The file system path for a local path dependency.
-    /// Only produced on cargo 1.51+
-    pub fn path( &self ) -> Option< Utf8PathBuf >
+
+    /// Returns list of all packages
+    pub fn packages< 'a >( &'a self )
+    -> core::iter::Map
+    <
+      slice::Iter< 'a, cargo_metadata::Package >,
+      impl Fn( &'a cargo_metadata::Package ) -> WorkspacePackageRef< 'a > + Clone,
+    >
     {
-      self.inner.path.clone()
+      self.metadata.packages.iter().map( WorkspacePackageRef::from )
     }
-    
-    /// Name as given in the Cargo.toml.
-    pub fn name( &self ) -> String
+
+    /// Returns the path to workspace root
+    pub fn workspace_root( &self ) -> CrateDir
     {
-      self.inner.name.clone()
+      // Safe because workspace_root.as_std_path() is always a path to a directory
+      CrateDir::try_from( self.metadata.workspace_root.as_std_path() ).unwrap()
     }
-    
-    /// The kind of dependency this is.
-    pub fn kind( &self ) -> DependencyKind
+
+    /// Returns the path to target directory
+    pub fn target_directory( &self ) -> &std::path::Path
     {
-      match self.inner.kind 
-      {
-        cargo_metadata::DependencyKind::Normal => DependencyKind::Normal,
-        cargo_metadata::DependencyKind::Development => DependencyKind::Development,
-        cargo_metadata::DependencyKind::Build => DependencyKind::Build,
-        cargo_metadata::DependencyKind::Unknown => DependencyKind::Unknown,
-      }
+      self.metadata.target_directory.as_std_path()
     }
-    
-    /// he required version
-    pub fn req( &self ) -> semver::VersionReq
+
+    /// Find a package by its manifest file path
+    pub fn package_find_by_manifest< 'a, P >( &'a self, manifest_file : P ) -> Option< WorkspacePackageRef< 'a > >
+    where
+      P : AsRef< std::path::Path >,
     {
-      self.inner.req.clone()
+      self
+      .packages()
+      .find( | &p | p.manifest_file().unwrap().as_ref() == manifest_file.as_ref() )
     }
-  }
-  
-  impl From< cargo_metadata::Dependency > for Dependency
-  {
-    fn from( inner : cargo_metadata::Dependency ) -> Self 
+
+    /// Filter of packages.
+    pub fn packages_which< 'a >( &'a self ) -> PackagesFilterFormer< 'a >
     {
-      Self
-      {
-        inner
-      }
+      // PackagesFilter::new( self )
+      PackagesFilter::former().workspace( self )
     }
-  }
 
-  /// Dependencies can come in three kinds
-  #[ derive( Eq, PartialEq, Debug ) ]
-  pub enum DependencyKind
-  {
-    /// The 'normal' kind
-    Normal,
-    /// Those used in tests only
-    Development,
-    /// Those used in build scripts only
-    Build,
-    /// The 'unknown' kind
-    Unknown,
   }
-    
-  /// Stores information about current workspace.
-  #[ derive( Debug, Clone ) ]
-  pub struct Workspace
+
+
+  #[ derive( Former ) ]
+  // #[ debug ]
+  #[ allow( missing_debug_implementations ) ]
+  pub struct PackagesFilter< 'a >
   {
-    metadata : Option< cargo_metadata::Metadata >,
-    manifest_dir : CrateDir,
+    workspace : &'a Workspace,
+    crate_dir : Box< dyn PackageFilter >,
+    manifest_file : Box< dyn PackageFilter >,
   }
 
-  /// Represents errors related to workspace operations.
-  #[ derive( Debug, Error ) ]
-  pub enum WorkspaceError
+  pub trait PackageFilter
   {
-    /// Metadata is non.
-    #[ error( "Metadata is non " ) ]
-    MetadataError,
+    fn include( &self, package : WorkspacePackageRef< '_ > ) -> bool;
   }
 
-  impl Workspace
+  impl Default for Box< dyn PackageFilter >
   {
-    /// Load data from current directory
-    pub fn from_current_path() -> Result< Self >
+    fn default() -> Self
     {
-      let current_path = AbsolutePath::try_from( std::env::current_dir().unwrap_or_default() )?;
-      let metadata = cargo_metadata::MetadataCommand::new().no_deps().exec().context("fail to load CargoMetadata")?;
-      Ok( Self
-      {
-        metadata : Some( metadata ),
-        manifest_dir : CrateDir::try_from( current_path )?,
-      })
+      Box::new( PackageFilterAll )
     }
+  }
 
-    /// Load data from current directory
-    pub fn with_crate_dir( crate_dir : CrateDir ) -> Result< Self >
+  pub struct PackageFilterAll;
+  impl PackageFilter for PackageFilterAll
+  {
+    #[ inline( always ) ]
+    fn include( &self, _package : WorkspacePackageRef< '_ > ) -> bool
     {
-      Ok
-      (
-        Self
-        {
-          metadata : Some( cargo_metadata::MetadataCommand::new().current_dir( crate_dir.as_ref() ).no_deps().exec().context( "fail to load CargoMetadata" )? ),
-          manifest_dir : crate_dir,
-        }
-      )
+      true
     }
   }
 
-  impl From< cargo_metadata::Metadata > for Workspace
+  pub struct PackageFilterCrateDir( CrateDir );
+  impl PackageFilter for PackageFilterCrateDir
   {
-    fn from( value : cargo_metadata::Metadata ) -> Self
+    #[ inline( always ) ]
+    fn include( &self, package : WorkspacePackageRef< '_ > ) -> bool
     {
-      let path = value.workspace_root.as_std_path().parent().unwrap().to_path_buf();
-      let path = AbsolutePath::try_from( path ).unwrap();
-      Self
-      {
-        metadata : Some( value ),
-        manifest_dir : CrateDir::try_from( path ).unwrap(),
-      }
+      self.0 == package.crate_dir().unwrap()
     }
   }
 
-  impl Workspace
+  impl From< CrateDir > for Box< dyn PackageFilter >
   {
-    /// Load data from the current location or from cache
-    // FIX : Maybe unsafe. Take metadata of workspace in current dir.
-    pub fn load( &mut self ) -> Result< &mut Self >
+    #[ inline( always ) ]
+    fn from( src : CrateDir ) -> Self
     {
-      if self.metadata.is_none()
-      {
-        let metadata = Self::with_crate_dir( self.manifest_dir.clone() )?.metadata.unwrap();
-        _ = self.metadata.insert( metadata );
-      }
-
-      Ok( self )
+      Box::new( PackageFilterCrateDir( src ) )
     }
+  }
 
-    /// Force loads data from the current location
-    // FIX : Maybe unsafe. Take metadata of workspace in current dir.
-    pub fn force_reload( &mut self ) -> Result< &mut Self >
+  pub struct PackageFilterManifestFile( ManifestFile );
+  impl PackageFilter for PackageFilterManifestFile
+  {
+    #[ inline( always ) ]
+    fn include( &self, package : WorkspacePackageRef< '_ > ) -> bool
     {
-      let metadata = Self::with_crate_dir( self.manifest_dir.clone() )?.metadata.unwrap();
-      _ = self.metadata.insert( metadata );
-
-      Ok( self )
+      self.0 == package.manifest_file().unwrap()
     }
   }
 
-  impl Workspace
+  impl From< ManifestFile > for Box< dyn PackageFilter >
   {
-    /// Returns list of all packages
-    pub fn packages( &self ) -> Result< Vec< WorkspacePackage >, WorkspaceError > 
+    #[ inline( always ) ]
+    fn from( src : ManifestFile ) -> Self
     {
-      self
-      .metadata
-      .as_ref()
-      .ok_or_else( || WorkspaceError::MetadataError )
-      .map( | metadata | metadata.packages.clone() )
-      .map( | p | p.into_iter().map( WorkspacePackage::from ).collect() )
+      Box::new( PackageFilterManifestFile( src ) )
     }
+  }
 
+  impl< 'a > PackagesFilter< 'a >
+  {
 
-    /// Returns the path to workspace root
-    pub fn workspace_root( &self ) -> Result< &Path, WorkspaceError >
+    pub fn new( workspace : &'a Workspace ) -> Self
     {
-      Ok( self.metadata.as_ref().ok_or_else( || WorkspaceError::MetadataError )?.workspace_root.as_std_path() )
+      Self
+      {
+        workspace,
+        crate_dir : Default::default(),
+        manifest_file : Default::default(),
+      }
     }
 
-    /// Returns the path to target directory
-    pub fn target_directory( &self ) -> Result< &Path, WorkspaceError >
+    #[ inline( always ) ]
+    pub fn iter( &'a self ) -> impl Iterator< Item = WorkspacePackageRef< 'a > > + Clone
     {
-      Ok( self.metadata.as_ref().ok_or_else( || WorkspaceError::MetadataError )?.target_directory.as_std_path() )
-    }
 
-    /// Return discord url
-    pub fn discord_url( &self ) -> Result< Option< String >, WorkspaceError >
-    {
-      Ok( self.metadata.as_ref().ok_or_else( || WorkspaceError::MetadataError )?.workspace_metadata[ "discord_url" ].as_str().map( | url | url.to_string() ) )
-    }
+      // self
+      // .workspace
+      // .packages()
+      // .find( | &p | p.manifest_file().unwrap().as_ref() == manifest_file.as_ref() )
 
-    /// Return the master branch
-    pub fn master_branch( &self ) -> Result< Option< String >, WorkspaceError >
-    {
-      Ok( self.metadata.as_ref().ok_or_else( || WorkspaceError::MetadataError )?.workspace_metadata.get( "master_branch" ).and_then( | b | b.as_str() ).map( | b | b.to_string() ) )
-    }
+      // let filter_crate_dir = if Some( crate_dir ) = self.crate_dir
+      // {
+      //   | p | p.manifest_file().unwrap().as_ref() == manifest_file.as_ref()
+      // }
 
-    /// Return the repository url
-    pub fn repository_url( &self ) -> Result< Option< String >, WorkspaceError >
-    {
-      Ok( self.metadata.as_ref().ok_or_else( || WorkspaceError::MetadataError )?.workspace_metadata.get( "repo_url" ).and_then( | b | b.as_str() ).map( | b | b.to_string() ) )
+      std::iter::empty()
     }
 
-    /// Return the workspace_name
-    pub fn workspace_name( &self ) -> Result< Option< String >, WorkspaceError >
+  }
+
+  impl< 'a > PackagesFilterFormer< 'a >
+  {
+    #[ inline( always ) ]
+    // pub fn find< 'a >( self ) -> impl Iterator< Item = WorkspacePackageRef< 'a > > + Clone
+    pub fn find( self ) -> Option< WorkspacePackageRef< 'a > >
     {
-      Ok( self.metadata.as_ref().ok_or_else( || WorkspaceError::MetadataError )?.workspace_metadata.get( "workspace_name" ).and_then( | b | b.as_str() ).map( | b | b.to_string() ) )
+      let formed = self.form();
+
+      formed
+      .workspace
+      .packages()
+      .find( | &p |
+      {
+        if !formed.crate_dir.include( p ) { return false };
+        if !formed.manifest_file.include( p ) { return false };
+        return true;
+      })
+      .clone()
+      // .unwrap()
+
+      // let filter_crate_dir = if Some( crate_dir ) = self.crate_dir
+      // {
+      //   | p | p.manifest_file().unwrap().as_ref() == manifest_file.as_ref()
+      // }
+
+      // std::iter::empty()
     }
+  }
 
-    /// Find a package by its manifest file path
-    pub fn package_find_by_manifest< P >( &self, manifest_path : P ) -> Option< WorkspacePackage >
-    where
-      P : AsRef< Path >,
+  impl Entries for Workspace
+  {
+    fn entries( &self ) -> impl IterTrait< '_, SourceFile >
     {
       self
       .packages()
-      .ok()
-      .and_then
-      (
-        | packages |
-        packages
-        .iter()
-        .find( | &p | p.manifest_path().as_std_path() == manifest_path.as_ref() )
-        .cloned()
-      )
+      .flat_map( | package | package.entries().collect::< Vec< _ > >() )
+      .collect::< Vec< _ > >()
+      .into_iter()
     }
+  }
 
-    /// Returns a graph of packages.
-    pub( crate ) fn graph( &self ) -> Graph< String, String >
+  impl Sources for Workspace
+  {
+    fn sources( &self ) -> impl IterTrait< '_, SourceFile >
     {
-      let packages = self.packages().unwrap();
-      let module_package_filter : Option< Box< dyn Fn( &WorkspacePackage ) -> bool > > = Some
-      (
-        Box::new( move | p | p.publish().is_none() )
-      );
-      let module_dependency_filter : Option< Box< dyn Fn( &WorkspacePackage, &Dependency ) -> bool > > = Some
-      (
-        Box::new
-        (
-          move | _, d | d.path().is_some() && d.kind() != DependencyKind::Development
-        )
-      );
-      let module_packages_map = packages::filter
-      (
-        packages.as_slice(),
-        packages::FilterMapOptions { package_filter : module_package_filter, dependency_filter : module_dependency_filter },
-      );
-
-      graph::construct( &module_packages_map ).map( | _, x | x.to_string(), | _, x | x.to_string() )
+      self
+      .packages()
+      .flat_map( | package | package.sources().collect::< Vec< _ > >() )
+      .collect::< Vec< _ > >().into_iter()
+      // .into_iter()
     }
   }
+
 }
 
 //
 
 crate::mod_interface!
 {
+  exposed use WorkspaceInitError;
   exposed use Workspace;
-  orphan use WorkspaceError;
-  protected use WorkspacePackage;
-  protected use Dependency;
-  protected use DependencyKind;
 }
diff --git a/module/move/willbe/src/entity/workspace_graph.rs b/module/move/willbe/src/entity/workspace_graph.rs
new file mode 100644
index 0000000000..01e17d7846
--- /dev/null
+++ b/module/move/willbe/src/entity/workspace_graph.rs
@@ -0,0 +1,38 @@
+pub( crate ) mod private
+{
+  use crate::*;
+
+  /// Returns a graph of packages.
+  pub fn graph( workspace : &Workspace ) -> petgraph::Graph< String, String >
+  {
+    let packages = workspace.packages();
+    let module_package_filter : Option< Box< dyn Fn( WorkspacePackageRef< '_ > ) -> bool > > = Some
+    (
+      Box::new( move | p | p.publish().is_none() )
+    );
+    let module_dependency_filter : Option< Box< dyn Fn( WorkspacePackageRef< '_ >, DependencyRef< '_ > ) -> bool > > = Some
+    (
+      Box::new
+      (
+        move | _, d | d.crate_dir().is_some() && d.kind() != DependencyKind::Development
+      )
+    );
+    let module_packages_map = packages::filter
+    (
+      // packages.as_slice(),
+      packages,
+      packages::FilterMapOptions { package_filter : module_package_filter, dependency_filter : module_dependency_filter },
+    );
+
+    graph::construct( &module_packages_map ).map( | _, x | x.to_string(), | _, x | x.to_string() )
+  }
+}
+
+//
+
+crate::mod_interface!
+{
+  protected use graph;
+}
+
+// xxx : move
\ No newline at end of file
diff --git a/module/move/willbe/src/entity/workspace_md_extension.rs b/module/move/willbe/src/entity/workspace_md_extension.rs
new file mode 100644
index 0000000000..bbc5f06da9
--- /dev/null
+++ b/module/move/willbe/src/entity/workspace_md_extension.rs
@@ -0,0 +1,70 @@
+/// Internal namespace.
+pub( crate ) mod private
+{
+  use crate::*;
+  
+  /// Md's extension for workspace
+  pub trait WorkspaceMdExtension
+  {
+    /// Return discord url
+    fn discord_url( &self ) -> Option< String >;
+
+    /// Return the master branch
+    fn master_branch( &self ) -> Option< String >;
+
+    /// Return the repository url
+    fn repository_url( &self ) -> Option< String >;
+
+    /// Return the workspace_name
+    fn workspace_name( &self ) -> Option< String >;
+  }
+
+  impl WorkspaceMdExtension for Workspace
+  {
+    fn discord_url( &self ) -> Option< String > 
+    {
+      self
+      .metadata
+      .workspace_metadata[ "discord_url" ]
+      .as_str()
+      .map( | url | url.to_string() )
+    }
+
+    fn master_branch( &self ) -> Option< String > 
+    {
+      self
+      .metadata
+      .workspace_metadata
+      .get( "master_branch" )
+      .and_then( | b | b.as_str() )
+      .map( | b | b.to_string() )
+    }
+
+    fn repository_url( &self ) -> Option< String > 
+    {
+      self
+      .metadata
+      .workspace_metadata
+      .get( "repo_url" )
+      .and_then( | b | b.as_str() )
+      .map( | b | b.to_string() )
+    }
+
+    fn workspace_name( &self ) -> Option< String > 
+    {
+      self
+      .metadata
+      .workspace_metadata
+      .get( "workspace_name" )
+      .and_then( | b | b.as_str() )
+      .map( | b | b.to_string() )
+    }
+  }
+
+}
+
+
+crate::mod_interface!
+{
+  protected use WorkspaceMdExtension;
+}
diff --git a/module/move/willbe/src/entity/workspace_package.rs b/module/move/willbe/src/entity/workspace_package.rs
new file mode 100644
index 0000000000..6ecada7108
--- /dev/null
+++ b/module/move/willbe/src/entity/workspace_package.rs
@@ -0,0 +1,212 @@
+mod private
+{
+  use crate::*;
+  use macros::kw;
+  use collection::BTreeMap;
+  use serde_json::Value;
+
+  use std::
+  {
+    borrow::Cow,
+  };
+
+  // xxx : qqq : Deref, DerefMut, AsRef, AsMut
+
+  /// Facade for cargo_metadata::Package
+  #[ derive( Debug, Clone, Copy ) ]
+  #[ repr( transparent ) ]
+  pub struct WorkspacePackageRef< 'a >
+  {
+    // #[ serde( flatten ) ]
+    inner : &'a cargo_metadata::Package,
+  }
+
+  impl< 'a > From< &'a cargo_metadata::Package > for WorkspacePackageRef< 'a >
+  {
+    fn from( inner : &'a cargo_metadata::Package ) -> Self
+    {
+      Self
+      {
+        inner
+      }
+    }
+  }
+
+  impl< 'a > WorkspacePackageRef< 'a >
+  {
+    /// The name field as given in the Cargo.toml
+    pub fn name( &'a self ) -> &'a str
+    {
+      &self.inner.name
+    }
+
+    /// List of dependencies of this particular package
+    pub fn dependencies( &'a self )
+    -> core::iter::Map
+    <
+      core::slice::Iter< 'a, cargo_metadata::Dependency >,
+      fn( &'a cargo_metadata::Dependency ) -> DependencyRef< 'a >,
+    >
+    {
+      fn dependency_from( dependency : &cargo_metadata::Dependency ) -> DependencyRef< '_ >
+      {
+        dependency.into()
+      }
+      self.inner.dependencies.iter().map( dependency_from )
+    }
+
+    /// Path to the manifest Cargo.toml
+    pub fn manifest_file( &self ) -> Result< ManifestFile, PathError >
+    {
+      self.inner.manifest_path.as_path().try_into()
+    }
+
+    /// Path to the directory with manifest Cargo.toml.
+    pub fn crate_dir( &self ) -> Result< CrateDir, PathError >
+    {
+      // SAFE because `manifest_path containing the Cargo.toml`
+      self.inner.manifest_path.as_path().parent().unwrap().try_into()
+    }
+
+    /// The version field as specified in the Cargo.toml
+    pub fn version( &self ) -> semver::Version
+    {
+      self.inner.version.clone()
+    }
+
+    /// List of registries to which this package may be published (derived from the publish field).
+    /// Publishing is unrestricted if None, and forbidden if the Vec is empty.
+    /// This is always None if running with a version of Cargo older than 1.39.
+    pub fn publish( &self ) -> Option< &Vec< String > >
+    {
+      self.inner.publish.as_ref()
+    }
+
+    ///Contents of the free form package.metadata section.
+    /// This contents can be serialized to a struct using serde:
+    /// ``` rust
+    /// use serde::Deserialize;
+    /// use serde_json::json;
+    ///
+    /// #[ derive( Debug, Deserialize ) ]
+    /// struct SomePackageMetadata
+    /// {
+    ///   some_value : i32,
+    /// }
+    ///
+    /// fn main()
+    /// {
+    ///   let value = json!
+    ///   ({
+    ///     "some_value" : 42,
+    ///   });
+    ///
+    ///   let package_metadata : SomePackageMetadata = serde_json::from_value( value ).unwrap();
+    ///   assert_eq!( package_metadata.some_value, 42 );
+    /// }
+    /// ```
+    pub fn metadata( &self ) -> &Value
+    {
+      &self.inner.metadata
+    }
+
+    /// The repository URL as specified in the Cargo.toml
+    pub fn repository( &self ) -> Option< &String >
+    {
+      self.inner.repository.as_ref()
+    }
+
+    /// Features provided by the crate, mapped to the features required by that feature.
+    pub fn features( &self ) -> &BTreeMap< String, Vec< String > >
+    {
+      &self.inner.features
+    }
+  }
+
+  impl< 'a > Entries for WorkspacePackageRef< 'a >
+  {
+    fn entries( &self ) -> impl IterTrait< '_, SourceFile >
+    {
+      self.inner.targets.iter().map( | target |
+      {
+        let src_path = &target.src_path;
+        let source : SourceFile = src_path.try_into().expect( &format!( "Illformed path to source file {src_path}" ) );
+        // println!( " -- {:?} {:?}", source, target.kind );
+        source
+      })
+    }
+  }
+
+  impl< 'a > Sources for WorkspacePackageRef< 'a >
+  {
+    fn sources( &self ) -> impl IterTrait< '_, SourceFile >
+    {
+      use walkdir::WalkDir;
+      let crate_dir = self.crate_dir().unwrap();
+      WalkDir::new( crate_dir )
+      .into_iter()
+      .filter_map( Result::ok )
+      .filter( | e | e.path().extension().map_or( false, | ext | ext == "rs" ) )
+      .map( | e | SourceFile::try_from( e.path() ).unwrap() )
+      .collect::< Vec< _ > >()
+      .into_iter()
+    }
+  }
+
+  impl< 'a > CodeItems for WorkspacePackageRef< 'a >
+  {
+    fn items( &self ) -> impl IterTrait< '_, syn::Item >
+    {
+      self
+      .sources()
+      .flat_map( | source | source.items().collect::< Vec< _ > >().into_iter() )
+      .collect::< Vec< _ > >().into_iter()
+    }
+  }
+
+  impl< 'a > AsCode for WorkspacePackageRef< 'a >
+  {
+    fn as_code< 'b >( &'b self ) -> std::io::Result< Cow< 'b, str > >
+    {
+      let mut results : Vec< String > = Vec::new();
+      // zzz : introduce formatter
+
+      for source in self.sources()
+      {
+        let code = source.as_code()?.into_owned();
+        let mut filename = source
+        .as_ref()
+        .with_extension( "" )
+        .file_name()
+        .expect( &format!( "Cant get file name of path {}", source.as_ref().display() ) )
+        .to_string_lossy()
+        .replace( ".", "_" );
+
+        if kw::is( &filename )
+        {
+          filename.push_str( "_rs" );
+        }
+
+        // qqq : xxx : use callbacks instead of expect
+
+        results.push( format!( "// === Begin of File {}", source.as_ref().display() ) );
+        results.push( format!( "mod {}\n{{\n", filename ) );
+        results.push( code );
+        results.push( "\n}".to_string() );
+        results.push( format!( "// === End of File {}", source.as_ref().display() ) );
+
+      }
+
+      let joined = results.join( "\n" );
+      Ok( Cow::Owned( joined ) )
+    }
+  }
+
+}
+
+//
+
+crate::mod_interface!
+{
+  exposed use WorkspacePackageRef;
+}
diff --git a/module/move/willbe/src/lib.rs b/module/move/willbe/src/lib.rs
index 3f0adc2fe1..69d0e6f1f9 100644
--- a/module/move/willbe/src/lib.rs
+++ b/module/move/willbe/src/lib.rs
@@ -3,10 +3,7 @@
 #![ doc( html_root_url = "https://docs.rs/willbe/" ) ]
 #![ doc = include_str!( concat!( env!( "CARGO_MANIFEST_DIR" ), "/", "Readme.md" ) ) ]
 
-use mod_interface::mod_interface;
-/// Micro wtools
-pub mod wtools;
-use wtools::*;
+pub use mod_interface::mod_interface;
 
 /// Internal namespace.
 pub( crate ) mod private
@@ -18,14 +15,14 @@ pub( crate ) mod private
   /// It then terminates the program with an exit code of 1 to indicate an error due to the lack of input.
   ///
   /// Do not support interactive mode.
-  pub fn run( args : Vec< String > ) -> Result< (), wtools::error::for_app::Error >
+  pub fn run( args : Vec< String > ) -> Result< (), error::untyped::Error >
   {
     #[ cfg( feature = "tracing" ) ]
     {
       tracing_subscriber::fmt().pretty().init();
     }
 
-    let args = args.into_iter().skip( 1 ).collect::< Vec< String > >();
+    let args : Vec< String > = args.into_iter().skip( 1 ).collect();
 
     let ca = command::ca()
     .help_variants( [ wca::HelpVariants::General, wca::HelpVariants::SubjectCommand ] )
@@ -44,6 +41,7 @@ pub( crate ) mod private
     }
 
   }
+
 }
 
 mod_interface!
diff --git a/module/move/willbe/src/tool/_path.rs b/module/move/willbe/src/tool/_path.rs
deleted file mode 100644
index a8209366f7..0000000000
--- a/module/move/willbe/src/tool/_path.rs
+++ /dev/null
@@ -1,170 +0,0 @@
-/// Internal namespace.
-pub( crate ) mod private
-{
-  use std::path::{ Path, PathBuf };
-  use std::time::{ SystemTime, UNIX_EPOCH };
-  use cargo_metadata::camino::{ Utf8Path, Utf8PathBuf };
-
-  /// Absolute path.
-  #[ derive( Debug, Clone, Ord, PartialOrd, Eq, PartialEq, Hash ) ]
-  pub struct AbsolutePath( PathBuf );
-
-  impl TryFrom< &str > for AbsolutePath
-  {
-    type Error = std::io::Error;
-
-    fn try_from( value : &str ) -> Result< Self, Self::Error >
-    {
-      let value = PathBuf::from( value );
-      Ok( Self( canonicalize( value )? ) )
-    }
-  }
-
-  impl TryFrom< String > for AbsolutePath
-  {
-    type Error = std::io::Error;
-
-    fn try_from( value : String ) -> Result< Self, Self::Error >
-    {
-      let value = PathBuf::from( value );
-      Ok( Self( canonicalize( value )? ) )
-    }
-  }
-
-  impl TryFrom< PathBuf > for AbsolutePath
-  {
-    type Error = std::io::Error;
-
-    fn try_from( value : PathBuf ) -> Result< Self, Self::Error >
-    {
-      Ok( Self( canonicalize( value )? ) )
-    }
-  }
-
-  impl TryFrom< &Path > for AbsolutePath
-  {
-    type Error = std::io::Error;
-
-    fn try_from( value : &Path ) -> Result< Self, Self::Error >
-    {
-      Ok( Self( canonicalize( value )? ) )
-    }
-  }
-
-  impl TryFrom< Utf8PathBuf > for AbsolutePath
-  {
-    type Error = std::io::Error;
-
-    fn try_from( value : Utf8PathBuf ) -> Result< Self, Self::Error >
-    {
-      AbsolutePath::try_from( value.as_std_path() )
-    }
-  }
-
-  impl TryFrom< &Utf8Path > for AbsolutePath
-  {
-    type Error = std::io::Error;
-
-    fn try_from( value : &Utf8Path ) -> Result< Self, Self::Error >
-    {
-      AbsolutePath::try_from( value.as_std_path() )
-    }
-  }
-
-  impl AsRef< Path > for AbsolutePath
-  {
-    fn as_ref( &self ) -> &Path
-    {
-      self.0.as_ref()
-    }
-  }
-
-  impl AbsolutePath
-  {
-    /// Returns the Path without its final component, if there is one.
-    /// Returns None if the path terminates in a root or prefix, or if it's the empty string.
-    pub fn parent( &self ) -> Option< AbsolutePath >
-    {
-      self.0.parent().map( PathBuf::from ).map( AbsolutePath )
-    }
-
-    /// Creates an owned `AbsolutePath` with path adjoined to self.
-    pub fn join< P >( &self, path : P ) -> AbsolutePath
-    where
-      P : AsRef< Path >,
-    {
-      Self::try_from( self.0.join( path ) ).unwrap()
-    }
-  }
-
-  // qqq : for Petro : for Bohdan : bad. move out
-
-  /// Check if path has a glob.
-  #[ allow( dead_code ) ]
-  fn glob_is( path : &str ) -> bool
-  {
-    let glob_chars = "*?[{";
-    let mut last_char = ' ';
-    for char in path.chars()
-    {
-      if last_char != '\\' && glob_chars.contains( char )
-      {
-        return true;
-      }
-
-      last_char = char;
-    }
-
-    false
-  }
-
-  /// Returns the canonical, absolute form of the path with all intermediate components normalized and symbolic links resolved.
-  pub fn canonicalize( path : impl AsRef< Path > ) -> std::io::Result< PathBuf >
-  {
-    let path = path.as_ref().canonicalize()?;
-
-    // In Windows the regular/legacy paths (C :\foo) are supported by all programs, but have lots of bizarre restrictions for backwards compatibility with MS-DOS.
-    // And there are Windows NT UNC paths (\\?\C :\foo), which are more robust and with fewer gotchas, but are rarely supported by Windows programs. Even Microsoft’s own!
-    //
-    // https://github.com/rust-lang/rust/issues/42869
-    #[ cfg( target_os = "windows" ) ]
-    let path =
-    {
-      const VERBATIM_PREFIX : &str = r#"\\?\"#;
-      let p = path.display().to_string();
-      if p.starts_with( VERBATIM_PREFIX )
-      {
-        PathBuf::from( &p[ VERBATIM_PREFIX.len() .. ] )
-      }
-      else
-      {
-        path.into()
-      }
-    };
-
-    Ok( path )
-  }
-
-  /// Generate name based on system time
-  pub fn unique_folder_name() -> crate::wtools::error::Result< String >
-  {
-    let timestamp = SystemTime::now()
-    .duration_since( UNIX_EPOCH )?
-    .as_nanos();
-
-    Ok( format!( "{}", timestamp ) )
-  }
-
-}
-
-crate::mod_interface!
-{
-  // qqq : remove this?
-  // protected use glob_is;
-  protected use canonicalize;
-  protected use unique_folder_name;
-
-  protected use AbsolutePath;
-}
-
-// qqq : for Petro : for Bohdan : rid off this file. use proper_path_tools
diff --git a/module/move/willbe/src/tool/cargo.rs b/module/move/willbe/src/tool/cargo.rs
index 32ef54e375..3463201de5 100644
--- a/module/move/willbe/src/tool/cargo.rs
+++ b/module/move/willbe/src/tool/cargo.rs
@@ -1,29 +1,59 @@
+/// Internal namespace.
 mod private
 {
-  use std::ffi::OsString;
-  use crate::*;
+  #[ allow( unused_imports ) ]
+  use crate::tool::*;
 
+  use std::ffi::OsString;
   use std::path::PathBuf;
-  use error_tools::err;
-  use error_tools::for_app::format_err;
+  use error::err;
+  use error::untyped::format_err;
   use former::Former;
-  use process_tools::process::*;
-  use wtools::error::Result;
-  use channel::Channel;
+  use process_tools::process;
+  // use process_tools::process::*;
+  // qqq : for Bohdan : bad
+  // use error::Result;
+  // qqq : group dependencies
+
+  // qqq : for Bohdan : bad : tools can't depend on entitties!
+  use crate::channel::Channel;
+
+  // aaa : documentation /// aaa : documented
 
-  /// Represents pack options
+  /// Represents options for packaging a project.
+  ///
+  /// The `PackOptions` struct encapsulates various options that can be configured when packaging a project,
+  /// including the path to the project, the distribution channel, and various flags for controlling the behavior of the packaging process.
   #[ derive( Debug, Former, Clone ) ]
   pub struct PackOptions
   {
-    pub( crate ) path : PathBuf, 
+    /// The path to the project to be packaged.
+    ///
+    /// This field specifies the file system path where the project is located.
+    pub( crate ) path : PathBuf,
+    /// The distribution channel for the packaging project.
+    ///
+    /// This field specifies the channel through which the packaged project will be distributed.
+    ///
     pub( crate ) channel : Channel,
+    /// Flag indicating whether to allow packaging even if the working directory is dirty.
+    ///
+    /// This field is set to `true` by default, meaning that packaging will proceed even if there are uncommitted changes.
     #[ former( default = true ) ]
     pub( crate ) allow_dirty : bool,
     // qqq : rename to checking_changes
+    /// Flag indicating whether to skip verification checks.
     #[ former( default = false ) ]
-    // qqq : don't abuse negative form, rename to checking_consistency
-    pub( crate ) no_verify : bool,
+    // aaa : don't abuse negative form, rename to checking_consistency
+    // renamed and changed logic
+    pub( crate ) checking_consistency : bool,
+    /// An optional temporary path to be used during packaging.
+    ///
+    /// This field may contain a path to a temporary directory that will be used during the packaging process.
     pub( crate ) temp_path : Option< PathBuf >,
+    /// Flag indicating whether to perform a dry run.
+    ///
+    /// This field specifies whether the packaging process should be a dry run, meaning that no actual changes will be made.
     pub( crate ) dry : bool,
   }
 
@@ -43,7 +73,7 @@ mod private
       [ "run".to_string(), self.channel.to_string(), "cargo".into(), "package".into() ]
       .into_iter()
       .chain( if self.allow_dirty { Some( "--allow-dirty".to_string() ) } else { None } )
-      .chain( if self.no_verify { Some( "--no-verify".to_string() ) } else { None } )
+      .chain( if !self.checking_consistency { Some( "--no-verify".to_string() ) } else { None } )
       .chain( self.temp_path.clone().map( | p | vec![ "--target-dir".to_string(), p.to_string_lossy().into() ] ).into_iter().flatten() )
       .collect()
     }
@@ -62,7 +92,9 @@ mod private
     track_caller,
     tracing::instrument( fields( caller = ?{ let x = std::panic::Location::caller(); ( x.file(), x.line() ) } ) )
   )]
-  pub fn pack( args : PackOptions ) -> Result< Report >
+  // qqq : should be typed error, apply err_with
+  // qqq : don't use 1-prameter Result
+  pub fn pack( args : PackOptions ) -> Result< process::Report >
   {
     let ( program, options ) = ( "rustup", args.to_pack_args() );
 
@@ -70,7 +102,7 @@ mod private
     {
       Ok
       (
-        Report
+        process::Report
         {
           command : format!( "{program} {}", options.join( " " ) ),
           out : String::new(),
@@ -82,7 +114,7 @@ mod private
     }
     else
     {
-      Run::former()
+      process::Run::former()
       .bin_path( program )
       .args( options.into_iter().map( OsString::from ).collect::< Vec< _ > >() )
       .current_path( args.path )
@@ -116,7 +148,7 @@ mod private
     fn as_publish_args( &self ) -> Vec< String >
     {
       let target_dir = self.temp_path.clone().map( | p | vec![ "--target-dir".to_string(), p.to_string_lossy().into() ] );
-      [ "publish".to_string() ].into_iter().chain( target_dir.into_iter().flatten() ).collect::< Vec< String > >()
+      [ "publish".to_string() ].into_iter().chain( target_dir.into_iter().flatten() ).collect()
     }
   }
 
@@ -127,7 +159,8 @@ mod private
     track_caller,
     tracing::instrument( fields( caller = ?{ let x = std::panic::Location::caller(); ( x.file(), x.line() ) } ) )
   )]
-  pub fn publish( args : PublishOptions ) -> Result< Report >
+  pub fn publish( args : PublishOptions ) -> Result< process::Report >
+  // qqq : don't use 1-prameter Result
   {
     let ( program, arguments) = ( "cargo", args.as_publish_args() );
 
@@ -135,7 +168,7 @@ mod private
     {
       Ok
         (
-          Report
+          process::Report
           {
             command : format!( "{program} {}", arguments.join( " " ) ),
             out : String::new(),
@@ -148,10 +181,10 @@ mod private
     else
     {
       let mut results = Vec::with_capacity( args.retry_count + 1 );
-      let run_args =  arguments.into_iter().map( OsString::from ).collect::< Vec< _ > >();
+      let run_args : Vec< _ > =  arguments.into_iter().map( OsString::from ).collect();
       for _ in 0 .. args.retry_count + 1
       {
-        let result = Run::former()
+        let result = process::Run::former()
         .bin_path( program )
         .args( run_args.clone() )
         .current_path( &args.path )
@@ -168,7 +201,7 @@ mod private
       }
       else
       {
-        Err( results.remove( 0 ) ).map_err( | report  | err!( report.to_string() ) )
+        Err( results.remove( 0 ) ).map_err( | report | err!( report.to_string() ) )
       }
     }
   }
@@ -184,4 +217,4 @@ crate::mod_interface!
   protected use PublishOptions;
   protected use PackOptions;
 
-}
+}
\ No newline at end of file
diff --git a/module/move/willbe/src/tool/collection.rs b/module/move/willbe/src/tool/collection.rs
new file mode 100644
index 0000000000..42254b9618
--- /dev/null
+++ b/module/move/willbe/src/tool/collection.rs
@@ -0,0 +1,12 @@
+/// Internal namespace.
+pub( crate ) mod private
+{
+}
+
+crate::mod_interface!
+{
+
+  use ::collection_tools;
+  protected use ::collection_tools::protected::*;
+
+}
diff --git a/module/move/willbe/src/tool/error.rs b/module/move/willbe/src/tool/error.rs
new file mode 100644
index 0000000000..ff6f01b439
--- /dev/null
+++ b/module/move/willbe/src/tool/error.rs
@@ -0,0 +1,55 @@
+/// Internal namespace.
+pub( crate ) mod private
+{
+  #[ allow( unused_imports ) ]
+  use crate::tool::*;
+
+  use ::error_tools::protected::*;
+
+  // qqq : for for Petro : for Bohdan : good one, apply it to all code
+
+  /// This trait can be used to add extra information to an error, creating a tuple of the additional
+  /// context and the original error. This can be particularly useful for error handling where you
+  /// want to include more context or details in the error without losing the original error value.
+  pub trait ErrWith< V, R, E >
+  {
+    /// Takes a closure `f` that returns a value of type `V`, and uses it to wrap an error of type `(V, E1)`
+    /// in the context of a `Result` of type `R`.
+    fn err_with< F >( self, f : F ) -> std::result::Result< R, ( V, E ) >
+    where
+      F : FnOnce() -> V;
+  }
+
+  impl< V, R, E1, E2 > ErrWith< V, R, E1 > for std::result::Result< R, E2 >
+  where
+    E2 : Into< E1 >,
+  {
+    fn err_with< F >( self, f : F ) -> std::result::Result< R, ( V, E1 ) >
+    where
+      F : FnOnce() -> V,
+    {
+      self.map_err( | e | ( f(), e.into() ) )
+    }
+  }
+
+  /// A type alias for a `Result` that contains an error which is a tuple of a report and an original error.
+  ///
+  /// This is useful when you want to report additional information along with an error. The `ResultWithReport` type
+  /// helps in defining such results more concisely.
+  pub type ResultWithReport< Report, Error > = Result< Report, ( Report, Error ) >;
+
+
+}
+
+crate::mod_interface!
+{
+  // #![ debug ]
+
+  use ::error_tools;
+  protected use ::error_tools::protected::*;
+
+  exposed use ErrWith;
+  exposed use ResultWithReport;
+  exposed use ::error_tools::Result;
+
+}
diff --git a/module/move/willbe/src/tool/files.rs b/module/move/willbe/src/tool/files.rs
index 8dfbc4f78c..bb684e8bbe 100644
--- a/module/move/willbe/src/tool/files.rs
+++ b/module/move/willbe/src/tool/files.rs
@@ -1,15 +1,17 @@
 
-
 /// Internal namespace.
 pub( crate ) mod private
 {
+  #[ allow( unused_imports ) ]
+  use crate::tool::*;
+
   use std::path::{ Path, PathBuf };
 
   ///
   /// Find paths.
   ///
 
-  /* rrr : Dmytro : dubious prototype */
+  /* xxx : check */
   pub fn find< P, S >( base_dir : P, patterns : &[ S ] ) -> Vec< PathBuf >
   where
     P : AsRef< Path >,
@@ -21,7 +23,7 @@ pub( crate ) mod private
     .into_iter()
     .filter_map( Result::ok )
     .map( | s | s.path().to_path_buf() )
-    .collect::< Vec< PathBuf > >()
+    .collect()
   }
 
   /// Check if path is valid.
diff --git a/module/move/willbe/src/tool/git.rs b/module/move/willbe/src/tool/git.rs
index c90dc08109..e85532b3b4 100644
--- a/module/move/willbe/src/tool/git.rs
+++ b/module/move/willbe/src/tool/git.rs
@@ -1,11 +1,14 @@
+/// Internal namespace.
 mod private
 {
-  use crate::*;
+  #[ allow( unused_imports ) ]
+  use crate::tool::*;
+
   use std::ffi::OsString;
   use std::path::Path;
   use process_tools::process::*;
-  use wtools::error::Result;
-  use wtools::error::err;
+  use error::err;
+  // qqq : group dependencies
 
   /// Adds changes to the Git staging area.
   ///
@@ -18,8 +21,10 @@ mod private
   ///
   /// # Returns :
   /// Returns a result containing a report indicating the result of the operation.
+  // qqq : should be typed error, apply err_with
   #[ cfg_attr( feature = "tracing", tracing::instrument( skip( path, objects ), fields( path = %path.as_ref().display() ) ) ) ]
   pub fn add< P, Os, O >( path : P, objects : Os, dry : bool ) -> Result< Report >
+  // qqq : don't use 1-prameter Result
   where
     P : AsRef< Path >,
     Os : AsRef< [ O ] >,
@@ -27,7 +32,7 @@ mod private
   {
     let objects = objects.as_ref().iter().map( | x | x.as_ref() );
 
-    let ( program, args ) = ( "git", Some( "add" ).into_iter().chain( objects ).collect::< Vec< _ > >() );
+    let ( program, args ) : ( _, Vec< _ > ) = ( "git", Some( "add" ).into_iter().chain( objects ).collect() );
 
     if dry
     {
@@ -65,8 +70,10 @@ mod private
   ///
   /// # Returns :
   /// Returns a result containing a report indicating the result of the operation.
+  // qqq : should be typed error, apply err_with
   #[ cfg_attr( feature = "tracing", tracing::instrument( skip( path, message ), fields( path = %path.as_ref().display(), message = %message.as_ref() ) ) ) ]
   pub fn commit< P, M >( path : P, message : M, dry : bool ) -> Result< Report >
+  // qqq : don't use 1-prameter Result
   where
     P : AsRef< Path >,
     M : AsRef< str >,
@@ -108,8 +115,12 @@ mod private
   ///
   /// # Returns :
   /// Returns a result containing a report indicating the result of the operation.
+
+  // qqq : should be typed error, apply err_with
+
   #[ cfg_attr( feature = "tracing", tracing::instrument( skip( path ), fields( path = %path.as_ref().display() ) ) ) ]
   pub fn push< P >( path : P, dry : bool ) -> Result< Report >
+  // qqq : don't use 1-prameter Result
   where
     P : AsRef< Path >,
   {
@@ -138,7 +149,7 @@ mod private
       .run().map_err( | report | err!( report.to_string() ) )
     }
   }
-  
+
   /// This function is a wrapper around the `git reset` command.
   ///
   /// # Args :
@@ -150,13 +161,17 @@ mod private
   ///
   /// # Returns :
   /// This function returns a `Result` containing a `Report` if the command is executed successfully. The `Report` contains the command executed, the output
-// git reset command wrapper
+  /// git reset command wrapper
+
+  // qqq : should be typed error, apply err_with
+
   pub fn reset< P >( path : P, hard : bool, commits_count : usize, dry : bool ) -> Result< Report >
+  // qqq : don't use 1-prameter Result
   where
     P : AsRef< Path >,
   {
     if commits_count < 1 { return Err( err!( "Cannot reset, the count of commits must be greater than 0" ) ) }
-    let ( program, args ) = 
+    let ( program, args ) : ( _, Vec< _ > ) =
     (
       "git",
       Some( "reset" )
@@ -164,7 +179,7 @@ mod private
       .chain( if hard { Some( "--hard" ) } else { None } )
       .map( String::from )
       .chain( Some( format!( "HEAD~{}", commits_count ) ) )
-      .collect::< Vec< _ > >()
+      .collect()
     );
 
     if dry
@@ -200,6 +215,10 @@ mod private
   /// # Returns
   ///
   /// A `Result` containing a `Report`, which represents the result of the command execution.
+
+  // qqq : should be typed error, apply err_with
+  // qqq : don't use 1-prameter Result
+
   pub fn ls_remote_url< P >( path : P ) -> Result< Report >
   where
     P : AsRef< Path >,
diff --git a/module/move/willbe/src/tool/graph.rs b/module/move/willbe/src/tool/graph.rs
index db91c15afb..8e9f51ac91 100644
--- a/module/move/willbe/src/tool/graph.rs
+++ b/module/move/willbe/src/tool/graph.rs
@@ -1,17 +1,20 @@
 /// Internal namespace.
 pub( crate ) mod private
 {
+  #[ allow( unused_imports ) ]
   use crate::*;
 
+  // use crate::tool::*;
+  // qqq : bad : for Bohdan : asterist only crate::* and prelude::*
+
   use std::
   {
     ops::Index,
     fmt::Debug,
     hash::Hash,
-    collections::{ HashMap, HashSet }
   };
-  use std::collections::VecDeque;
-  use std::path::PathBuf;
+  use collection::{ HashMap, HashSet, VecDeque };
+  use path::PathBuf;
   use petgraph::
   {
     graph::Graph,
@@ -20,9 +23,13 @@ pub( crate ) mod private
   use petgraph::graph::NodeIndex;
   use petgraph::prelude::*;
 
-  use error_tools::for_lib::Error;
-  use error::Result;
+  use error::
+  {
+    typed::Error,
+  };
+
   use package::{ Package, publish_need };
+  // qqq : for Bohdan : bad : tools can't depend on entitties!
 
   #[ derive( Debug, Error ) ]
   pub enum GraphError< T : Debug >
@@ -40,8 +47,11 @@ pub( crate ) mod private
   /// The graph with all accepted packages
   pub fn construct< PackageIdentifier >
   (
-    packages : &HashMap< PackageIdentifier,
-    HashSet< PackageIdentifier > >
+    packages : &HashMap
+    <
+      PackageIdentifier,
+      HashSet< PackageIdentifier >,
+    >
   )
   -> Graph< &PackageIdentifier, &PackageIdentifier >
   where
@@ -86,7 +96,7 @@ pub( crate ) mod private
   (
     graph : Graph< &'a PackageIdentifier, &'a PackageIdentifier >
   )
-  -> Result< Vec< PackageIdentifier >, GraphError< PackageIdentifier > >
+  -> error::Result< Vec< PackageIdentifier >, GraphError< PackageIdentifier > >
   {
     match pg_toposort( &graph, None )
     {
@@ -96,7 +106,7 @@ pub( crate ) mod private
         .iter()
         .rev()
         .map( | dep_idx | ( *graph.node_weight( *dep_idx ).unwrap() ).clone() )
-        .collect::< Vec< _ > >()
+        .collect()
       ),
       Err( index ) => Err( GraphError::Cycle( ( *graph.index( index.node_id() ) ).clone() ) ),
       // aaa : for Bohdan : bad, make proper error handling
@@ -116,37 +126,37 @@ pub( crate ) mod private
   pub fn topological_sort_with_grouping< 'a, PackageIdentifier : Clone + std::fmt::Debug >
   (
     graph : Graph< &'a PackageIdentifier, &'a PackageIdentifier >
-  ) 
-  -> Vec< Vec< PackageIdentifier > > 
+  )
+  -> Vec< Vec< PackageIdentifier > >
   {
     let mut in_degree = HashMap::new();
-    for node in graph.node_indices() 
+    for node in graph.node_indices()
     {
       in_degree.insert( node, graph.neighbors_directed( node, Incoming ).count() );
     }
 
     let mut roots = VecDeque::new();
-    for ( node, &degree ) in in_degree.iter() 
+    for ( node, &degree ) in in_degree.iter()
     {
-      if degree == 0 
+      if degree == 0
       {
         roots.push_back( *node );
       }
     }
 
     let mut result = Vec::new();
-    while !roots.is_empty() 
+    while !roots.is_empty()
     {
       let mut next_roots = Vec::new();
       let mut group = Vec::new();
-      while let Some( node ) = roots.pop_front() 
+      while let Some( node ) = roots.pop_front()
       {
         group.push( node );
-        for edge in graph.neighbors( node ) 
+        for edge in graph.neighbors( node )
         {
           let degree = in_degree.get_mut( &edge ).unwrap();
           *degree -= 1;
-          if *degree == 0 
+          if *degree == 0
           {
             next_roots.push( edge );
           }
@@ -158,12 +168,12 @@ pub( crate ) mod private
     result
     .into_iter()
     .map
-    ( 
-      | vec | 
+    (
+      | vec |
       vec
       .iter()
       .map( | dep_idx | ( *graph.node_weight( *dep_idx ).unwrap() ).clone() )
-      .collect() 
+      .collect()
     )
     .rev()
     .collect()
@@ -236,14 +246,17 @@ pub( crate ) mod private
   /// # Returns
   ///
   /// A new `Graph` with the nodes that are not required to be published removed.
-  pub fn remove_not_required_to_publish
-  ( 
-    package_map : &HashMap< String, Package >, 
-    graph : &Graph< String, String >, 
-    roots : &[ String ], 
+
+  // qqq : for Bohdan : typed error
+  pub fn remove_not_required_to_publish< 'a >
+  (
+    package_map : &HashMap< String, Package< 'a > >,
+    graph : &Graph< String, String >,
+    roots : &[ String ],
     temp_path : Option< PathBuf >,
-  ) 
-  -> Result< Graph< String, String > >
+  )
+  -> error::Result< Graph< String, String > >
+  // qqq : don't use 1-prameter Result
   {
     let mut nodes = HashSet::new();
     let mut cleared_graph = Graph::new();
@@ -264,9 +277,9 @@ pub( crate ) mod private
         }
         let package = package_map.get( &graph[ n ] ).unwrap();
         _ = cargo::pack
-        ( 
+        (
           cargo::PackOptions::former()
-          .path( package.crate_dir().absolute_path().as_ref().to_path_buf() )
+          .path( package.crate_dir().absolute_path() )
           .option_temp_path( temp_path.clone() )
           .dry( false )
           .allow_dirty( true )
diff --git a/module/move/willbe/src/tool/http.rs b/module/move/willbe/src/tool/http.rs
index 4cd557ef59..6527044e75 100644
--- a/module/move/willbe/src/tool/http.rs
+++ b/module/move/willbe/src/tool/http.rs
@@ -1,7 +1,8 @@
 /// Internal namespace.
 pub( crate ) mod private
 {
-  use crate::*;
+  #[ allow( unused_imports ) ]
+  use crate::tool::*;
 
   use std::
   {
@@ -9,7 +10,7 @@ pub( crate ) mod private
     fmt::Write,
     time::Duration
   };
-  use wtools::error::{ for_app::Context, Result };
+  use error::{ untyped::Context, Result };
   use ureq::Agent;
 
   ///
diff --git a/module/move/willbe/src/tool/iter.rs b/module/move/willbe/src/tool/iter.rs
new file mode 100644
index 0000000000..3c75db35f0
--- /dev/null
+++ b/module/move/willbe/src/tool/iter.rs
@@ -0,0 +1,16 @@
+/// Internal namespace.
+pub( crate ) mod private
+{
+}
+
+//
+
+crate::mod_interface!
+{
+  use ::iter_tools;
+  protected use ::iter_tools::protected::*;
+}
+
+// use ::iter_tools::protected::iter as xxx;
+// use ::iter_tools::protected::iter2 as xxx2;
+// use iter as xxx3;
diff --git a/module/move/willbe/src/tool/macros.rs b/module/move/willbe/src/tool/macros.rs
new file mode 100644
index 0000000000..b69d25643d
--- /dev/null
+++ b/module/move/willbe/src/tool/macros.rs
@@ -0,0 +1,15 @@
+/// Internal namespace.
+pub( crate ) mod private
+{
+}
+
+crate::mod_interface!
+{
+
+  use ::macro_tools;
+  protected use ::macro_tools::protected::*;
+
+}
+
+// use protected::macro_tools as xxx;
+// use protected::macro_tools2 as xxx2;
diff --git a/module/move/willbe/src/tool/mod.rs b/module/move/willbe/src/tool/mod.rs
index 8f8e77635e..b104c31de3 100644
--- a/module/move/willbe/src/tool/mod.rs
+++ b/module/move/willbe/src/tool/mod.rs
@@ -1,17 +1,37 @@
 crate::mod_interface!
 {
 
-  /// Make sha-1 hash for data.
-  layer sha;
-  orphan use super::sha;
+  /// Interaction module with the `cargo` utilities.
+  layer cargo;
+  orphan use super::cargo;
+
+  /// Function and structures to work with collections.
+  layer collection;
+  orphan use super::collection;
+
+  /// Errors handling.
+  layer error;
+  orphan use super::error;
 
   /// Operate over files.
   layer files;
   orphan use super::files;
-  
+
+  /// Http requests.
+  layer http;
+  orphan use super::http;
+
+  /// Iterating things.
+  layer iter;
+  orphan use super::iter;
+
+  /// Work with paths.
+  layer macros;
+  orphan use super::macros;
+
   /// Work with paths.
-  layer _path;
-  orphan use super::_path;
+  layer path;
+  orphan use super::path;
 
   /// Tools for working with dependencies graph.
   layer graph;
@@ -25,10 +45,6 @@ crate::mod_interface!
   layer git;
   orphan use super::git;
 
-  /// Interaction module with the `cargo` utilities.
-  layer cargo;
-  orphan use super::cargo;
-  
   /// The parse function parses an input string into a HashMap where the keys are String and the values are of type Value.
   layer query;
   orphan use super::query;
@@ -36,4 +52,26 @@ crate::mod_interface!
   /// Tools for parsing and extracting information from url.
   layer url;
   orphan use super::url;
+
+  /// Tools for printing a tree
+  layer tree;
+  orphan use super::tree;
+
+  /// Repository tools.
+  layer repository;
+  orphan use super::repository;
+
+  exposed use ::former::
+  {
+    Former,
+    Assign,
+  };
+
+  // xxx : check
+  // exposed use
+  // {
+  //   ::former::Former,
+  //   ::former::Assign,
+  // };
+
 }
diff --git a/module/move/willbe/src/tool/path.rs b/module/move/willbe/src/tool/path.rs
new file mode 100644
index 0000000000..03d2e08276
--- /dev/null
+++ b/module/move/willbe/src/tool/path.rs
@@ -0,0 +1,12 @@
+/// Internal namespace.
+pub( crate ) mod private
+{
+}
+
+crate::mod_interface!
+{
+
+  use ::proper_path_tools;
+  protected use ::proper_path_tools::protected::*;
+
+}
diff --git a/module/move/willbe/src/tool/query.rs b/module/move/willbe/src/tool/query.rs
index 6686858821..61b1f5013e 100644
--- a/module/move/willbe/src/tool/query.rs
+++ b/module/move/willbe/src/tool/query.rs
@@ -1,14 +1,19 @@
+/// Internal namespace.
 mod private
 {
-  use crate::*;
+  #[ allow( unused_imports ) ]
+  use crate::tool::*;
 
   use std::
   {
     str::FromStr,
-    collections::HashMap
   };
-  use error_tools::for_app::bail;
-  use wtools::error::{ for_app::{ Error }, Result };
+  use error::
+  {
+    untyped::{ Error, bail },
+    Result,
+  };
+  use collection::HashMap;
 
   #[ derive( Debug, PartialEq, Eq, Clone ) ]
   /// Parser value enum
diff --git a/module/move/willbe/src/tool/repository.rs b/module/move/willbe/src/tool/repository.rs
new file mode 100644
index 0000000000..5cb5b61623
--- /dev/null
+++ b/module/move/willbe/src/tool/repository.rs
@@ -0,0 +1,61 @@
+/// Internal namespace.
+pub( crate ) mod private
+{
+  #[ allow( unused_imports ) ]
+  use crate::tool::*;
+
+  /// Searches for a README file in specific subdirectories of the given directory path.
+  ///
+  /// This function attempts to find a README file in the following subdirectories: ".github",
+  /// the root directory, and "./docs". It returns the path to the first found README file, or
+  /// `None` if no README file is found in any of these locations.
+  pub fn readme_path( dir_path : &std::path::Path ) -> Result< std::path::PathBuf, std::io::Error >
+  {
+    if let Some( path ) = readme_in_dir_find( &dir_path.join( ".github" ) )
+    {
+      Ok( path )
+    }
+    else if let Some( path )  = readme_in_dir_find( dir_path )
+    {
+      Ok( path )
+    }
+    else if let Some( path )  = readme_in_dir_find( &dir_path.join( "docs" ) )
+    {
+      Ok( path )
+    }
+    else
+    {
+      Err( std::io::Error::new( std::io::ErrorKind::NotFound, format!( "Fail to find README.md at {}", &dir_path.display() ) ) )
+    }
+  }
+
+  /// Searches for a file named "readme.md" in the specified directory path.
+  ///
+  /// Given a directory path, this function searches for a file named "readme.md" in the specified
+  /// directory.
+  fn readme_in_dir_find( path : &std::path::Path ) -> Option< std::path::PathBuf >
+  {
+    std::fs::read_dir( path )
+    .ok()?
+    .filter_map( Result::ok )
+    .filter( | p | p.path().is_file() )
+    .filter_map( | f |
+    {
+      let l_f = f.file_name().to_ascii_lowercase();
+      if l_f == "readme.md"
+      {
+        return Some( f.file_name() )
+      }
+      None
+    })
+    .max()
+    .map( std::path::PathBuf::from )
+  }
+
+}
+
+
+crate::mod_interface!
+{
+  protected use readme_path;
+}
diff --git a/module/move/willbe/src/tool/sha.rs b/module/move/willbe/src/tool/sha.rs
deleted file mode 100644
index 5bb60bed23..0000000000
--- a/module/move/willbe/src/tool/sha.rs
+++ /dev/null
@@ -1,26 +0,0 @@
-/// Internal namespace.
-pub( crate ) mod private
-{
-  use sha1::{ Sha1, Digest };
-
-  // zzz : not used
-
-  ///
-  /// Make sha-1 hash for data.
-  ///
-
-  pub fn hash( data : &[ u8 ] ) -> Vec< u8 >
-  {
-    let mut hasher = Sha1::new();
-    hasher.update( data );
-    let result = hasher.finalize();
-    result.to_vec()
-  }
-}
-
-//
-
-crate::mod_interface!
-{
-  orphan use hash;
-}
diff --git a/module/move/willbe/src/tool/template.rs b/module/move/willbe/src/tool/template.rs
index ae07683d4b..411777dad5 100644
--- a/module/move/willbe/src/tool/template.rs
+++ b/module/move/willbe/src/tool/template.rs
@@ -1,49 +1,135 @@
+/// Internal namespace.
 mod private
 {
-  use std::collections::BTreeMap;
-  use std::fs;
-  use error_tools::for_app::Context;
-  use error_tools::Result;
-  use former::Former;
-  use wca::Props;
-  use std::path::Path;
-  use std::path::PathBuf;
-  use wca::Value;
-  use std::collections::HashMap;
-
-  // qqq : for Viktor : is that trait really necessary?
+  #[ allow( unused_imports ) ]
+  use crate::tool::*;
+
+  use std::
+  {
+    fs,
+    path::
+    {
+      Path,
+      PathBuf
+    },
+  };
+  use error::untyped::Context;
+
+  // qqq : for Nikita : is that trait really necessary?
   // Template - remove
   // DeployTemplate - move here
   // DeployTemplateFiles - remove
 
-  /// Trait for creating a template for a file structure.
-  pub trait Template< F > : Sized
-  where
-    F : TemplateFiles + Default
+  /// Template for creating deploy files.
+  ///
+  /// Includes terraform deploy options to GCP, and Hetzner,
+  /// a Makefile for useful commands, and a key directory.
+  #[ derive( Debug ) ]
+  pub struct TemplateHolder
   {
-    /// Creates all files in the template.
+    /// Files of the template.
+    pub files : Vec< TemplateFileDescriptor >,
+    /// Parameters definitions.
+    pub parameters : TemplateParameters,
+    /// The values associated with the template.
+    pub values : TemplateValues,
+  }
+
+  impl TemplateFiles for Vec< TemplateFileDescriptor > {}
+
+  // qqq : for Viktor : why DeployTemplate can't be part of template.rs?
+
+  impl TemplateHolder
+  {
+    /// Creates all files in the specified path using the template values.
+    ///
+    /// # Parameters
+    ///
+    /// - `path`: A reference to the path where the files will be created.
     ///
-    /// Path is the base path for the template to be created in.
-    fn create_all( self, path : &Path ) -> Result< () >;
+    /// # Returns
+    ///
+    /// A `Result` which is `Ok` if the files are created successfully, or an `Err` otherwise.
+    pub fn create_all( self, path : &path::Path ) -> Result< () >
+    {
+      self.files.create_all( path, &self.values )
+    }
 
-    /// Returns all parameters used by the template.
-    fn parameters( &self ) -> &TemplateParameters;
+    /// Returns a reference to the template parameters.
+    ///
+    /// # Returns
+    ///
+    /// A reference to `TemplateParameters`.
+    pub fn parameters( &self ) -> &TemplateParameters
+    {
+      &self.parameters
+    }
 
-    /// Sets values for provided parameters.
-    fn set_values( &mut self, values : TemplateValues );
+    /// Sets the template values.
+    ///
+    /// # Parameters
+    ///
+    /// - `values`: The new `TemplateValues` to be set.
+    pub fn set_values( &mut self, values : TemplateValues )
+    {
+      self.values = values
+    }
 
-    /// Relative path for parameter values storage.
-    fn parameter_storage( &self ) -> &Path;
+    /// Returns a reference to the template values.
+    ///
+    /// # Returns
+    ///
+    /// A reference to `TemplateValues`.
+    pub fn get_values( &self ) -> &TemplateValues
+    {
+      &self.values
+    }
+
+    /// Returns a mutable reference to the template values.
+    ///
+    /// # Returns
+    ///
+    /// A mutable reference to `TemplateValues`.
+    pub fn get_values_mut( &mut self ) -> &mut TemplateValues
+    {
+      &mut self.values
+    }
+
+    /// Returns the path to the parameter storage file.
+    ///
+    /// # Returns
+    ///
+    /// A reference to a `Path` representing the parameter storage file.
+    pub fn parameter_storage( &self ) -> &Path
+    {
+      "./.deploy_template.toml".as_ref()
+      // qqq : for Mykyta : hardcode?
+    }
 
+    /// Returns the name of the template.
     ///
-    fn template_name( &self ) -> &'static str;
+    /// # Returns
+    ///
+    /// A static string slice representing the template name.
+    pub fn template_name( &self ) -> &'static str
+    {
+      "deploy"
+    }
 
-    /// Loads provided parameters from previous run.
-    fn load_existing_params( &mut self, path : &Path ) -> Option< () >
+    /// Loads existing parameters from the specified path and updates the template values.
+    ///
+    /// # Parameters
+    ///
+    /// - `path`: A reference to the path where the parameter file is located.
+    ///
+    /// # Returns
+    ///
+    /// An `Option` which is `Some(())` if the parameters are loaded successfully, or `None` otherwise.
+    pub fn load_existing_params( &mut self, path : &Path ) -> Option< () >
     {
       let data = fs::read_to_string( path.join( self.parameter_storage() ) ).ok()?;
       let document = data.parse::< toml_edit::Document >().ok()?;
-      let parameters = self.parameters().descriptors.iter().map( | d | &d.parameter ).cloned().collect::< Vec< _ > >();
+      let parameters : Vec< _ > = self.parameters().descriptors.iter().map( | d | &d.parameter ).cloned().collect();
       let template_table = document.get( self.template_name() )?;
       for parameter in parameters
       {
@@ -59,20 +145,14 @@ mod private
         );
         if let Some( value ) = value
         {
-          self.get_values_mut().insert_if_empty( &parameter, Value::String( value.into() ) );
+          self.get_values_mut().insert_if_empty( &parameter, wca::Value::String( value.into() ) );
         }
       }
       Some( () )
     }
 
-    /// Get all template values.
-    fn get_values( &self ) -> &TemplateValues;
-
-    /// Get all template values as a mutable reference.
-    fn get_values_mut( &mut self ) -> &mut TemplateValues;
-
     /// Fetches mandatory parameters that are not set yet.
-    fn get_missing_mandatory( &self ) -> Vec< &str >
+    pub fn get_missing_mandatory( &self ) -> Vec< &str >
     {
       let values = self.get_values();
       self
@@ -84,6 +164,94 @@ mod private
     }
   }
 
+  impl Default for TemplateHolder
+  {
+    fn default() -> Self
+    {
+      let parameters = TemplateParameters::former()
+      .parameter( "gcp_project_id" ).is_mandatory( true ).end()
+      .parameter( "gcp_region" ).end()
+      .parameter( "gcp_artifact_repo_name" ).end()
+      .parameter( "docker_image_name" ).end()
+      .form();
+
+      Self
+      {
+        files : Default::default(),
+        parameters,
+        values : Default::default(),
+      }
+    }
+  }
+
+  // /// Trait for creating a template for a file structure.
+  // pub trait Template< F > : Sized
+  // where
+  //   F : TemplateFiles + Default
+  // {
+  //   /// Creates all files in the template.
+  //   ///
+  //   /// Path is the base path for the template to be created in.
+  //   fn create_all( self, path : &Path ) -> Result< () >;
+
+  //   /// Returns all parameters used by the template.
+  //   fn parameters( &self ) -> &TemplateParameters;
+
+  //   /// Sets values for provided parameters.
+  //   fn set_values( &mut self, values : TemplateValues );
+
+  //   /// Relative path for parameter values storage.
+  //   fn parameter_storage( &self ) -> &Path;
+
+  //   ///
+  //   fn template_name( &self ) -> &'static str;
+
+  //   /// Loads provided parameters from previous run.
+  //   fn load_existing_params( &mut self, path : &Path ) -> Option< () >
+  //   {
+  //     let data = fs::read_to_string( path.join( self.parameter_storage() ) ).ok()?;
+  //     let document = data.parse::< toml_edit::Document >().ok()?;
+  //     let parameters : Vec< _ > = self.parameters().descriptors.iter().map( | d | &d.parameter ).cloned().collect();
+  //     let template_table = document.get( self.template_name() )?;
+  //     for parameter in parameters
+  //     {
+  //       let value = template_table.get( &parameter )
+  //       .and_then
+  //       (
+  //         | item |
+  //         match item
+  //         {
+  //           toml_edit::Item::Value( toml_edit::Value::String( val ) ) => Some( val.value() ),
+  //           _ => None
+  //         }
+  //       );
+  //       if let Some( value ) = value
+  //       {
+  //         self.get_values_mut().insert_if_empty( &parameter, Value::String( value.into() ) );
+  //       }
+  //     }
+  //     Some( () )
+  //   }
+
+  //   /// Get all template values.
+  //   fn get_values( &self ) -> &TemplateValues;
+
+  //   /// Get all template values as a mutable reference.
+  //   fn get_values_mut( &mut self ) -> &mut TemplateValues;
+
+  //   /// Fetches mandatory parameters that are not set yet.
+  //   fn get_missing_mandatory( &self ) -> Vec< &str >
+  //   {
+  //     let values = self.get_values();
+  //     self
+  //     .parameters()
+  //     .list_mandatory()
+  //     .into_iter()
+  //     .filter( | key | values.0.get( *key ).map( | val | val.as_ref() ).flatten().is_none() )
+  //     .collect()
+  //   }
+  // }
+
   /// Files stored in a template.
   ///
   /// Can be iterated over, consuming the owner of the files.
@@ -104,7 +272,7 @@ mod private
   }
 
   /// Parameters required for the template.
-  #[ derive( Debug, Default, Former ) ]
+  #[ derive( Debug, Default, former::Former ) ]
   pub struct TemplateParameters
   {
     #[ subform_entry( setter = false ) ]
@@ -114,12 +282,12 @@ mod private
   impl TemplateParameters
   {
     /// Extracts template values from props for parameters required for this template.
-    pub fn values_from_props( &self, props : &Props ) -> TemplateValues
+    pub fn values_from_props( &self, props : &wca::Props ) -> TemplateValues
     {
       let values = self.descriptors
       .iter()
       .map( | d | &d.parameter )
-      .map( | param | ( param.clone(), props.get( param ).map( Value::clone ) ) )
+      .map( | param | ( param.clone(), props.get( param ).map( wca::Value::clone ) ) )
       .collect();
       TemplateValues( values )
     }
@@ -132,7 +300,7 @@ mod private
   }
 
   /// Parameter description.
-  #[ derive( Debug, Default, Former ) ]
+  #[ derive( Debug, Default, former::Former ) ]
   pub struct TemplateParameterDescriptor
   {
     parameter : String,
@@ -154,14 +322,14 @@ mod private
 
   /// Holds a map of parameters and their values.
   #[ derive( Debug, Default ) ]
-  pub struct TemplateValues( HashMap< String, Option< Value > > );
+  pub struct TemplateValues( collection::HashMap< String, Option< wca::Value > > );
 
   impl TemplateValues
   {
     /// Converts values to a serializable object.
     ///
     /// Currently only `String`, `Number`, and `Bool` are supported.
-    pub fn to_serializable( &self ) -> BTreeMap< String, String >
+    pub fn to_serializable( &self ) -> collection::BTreeMap< String, String >
     {
       self.0.iter().map
       (
@@ -173,11 +341,11 @@ mod private
             {
               match value
               {
-                Value::String( val ) => val.to_string(),
-                Value::Number( val ) => val.to_string(),
-                Value::Path( _ ) => "unsupported".to_string(),
-                Value::Bool( val ) => val.to_string(),
-                Value::List( _ ) => "unsupported".to_string(),
+                wca::Value::String( val ) => val.to_string(),
+                wca::Value::Number( val ) => val.to_string(),
+                wca::Value::Path( _ ) => "unsupported".to_string(),
+                wca::Value::Bool( val ) => val.to_string(),
+                wca::Value::List( _ ) => "unsupported".to_string(),
               }
             }
           )
@@ -189,7 +357,7 @@ mod private
     }
 
     /// Inserts new value if parameter wasn't initialized before.
-    pub fn insert_if_empty( &mut self, key : &str, value : Value )
+    pub fn insert_if_empty( &mut self, key : &str, value : wca::Value )
     {
       if let None = self.0.get( key ).and_then( | v | v.as_ref() )
       {
@@ -204,7 +372,7 @@ mod private
       {
         println! ("Parameter `{key}` is not set" );
         let answer = wca::ask( "Enter value" );
-        self.0.insert( key.into(), Some( Value::String( answer ) ) );
+        self.0.insert( key.into(), Some( wca::Value::String( answer ) ) );
       }
     }
   }
@@ -213,7 +381,7 @@ mod private
   ///
   /// Holds raw template data, relative path for the file, and a flag that
   /// specifies whether the raw data should be treated as a template.
-  #[ derive( Debug, Former ) ]
+  #[ derive( Debug, former::Former ) ]
   pub struct TemplateFileDescriptor
   {
     path : PathBuf,
@@ -298,7 +466,7 @@ mod private
   }
 
   /// Helper builder for full template file list.
-  #[ derive( Debug, Former ) ]
+  #[ derive( Debug, former::Former ) ]
   pub struct TemplateFilesBuilder
   {
     /// Stores all file descriptors for current template.
@@ -343,7 +511,7 @@ mod private
     fn read( &self, instruction : &FileReadInstruction ) -> Result< Vec< u8 > >;
   }
 
-  // qqq : xxx : why not public?
+  // zzz : why not public?
   struct FileSystem;
   impl FileSystemPort for FileSystem
   {
@@ -372,7 +540,8 @@ mod private
 
 crate::mod_interface!
 {
-  orphan use Template;
+  //orphan use Template;
+  orphan use TemplateHolder;
   orphan use TemplateFiles;
   orphan use TemplateFileDescriptor;
   orphan use TemplateParameters;
diff --git a/module/move/willbe/src/tool/tree.rs b/module/move/willbe/src/tool/tree.rs
new file mode 100644
index 0000000000..3c1e0c670b
--- /dev/null
+++ b/module/move/willbe/src/tool/tree.rs
@@ -0,0 +1,167 @@
+mod private
+{
+  use std::fmt::Write;
+  use crate::CrateDir;
+  use std::fmt::Formatter;
+
+  /// Struct for formatting and printing tree-like structures.
+  /// It contains symbols used for visualizing the tree and information about the tree nodes.
+  #[ derive( Debug, Clone, Eq, PartialEq ) ]
+  pub struct TreePrinter
+  {
+    /// Symbols used for visualizing the tree.
+    symbols : Symbols,
+    /// Information about the tree nodes.
+    pub info : ListNodeReport,
+  }
+
+  impl TreePrinter 
+  {
+    /// Creates a new instance of `TreePrinter` with the provided node information.
+    ///
+    /// # Parameters
+    ///
+    /// - `info`: A reference to a `ListNodeReport` object containing information about the tree nodes.
+    ///
+    /// # Returns
+    ///
+    /// A new instance of `TreePrinter`.
+    pub fn new(info : &ListNodeReport) -> Self 
+    {
+      TreePrinter
+      {
+        symbols : Symbols::default(),
+        info : info.clone(),
+      }
+    }
+
+    /// Displays the name, version, path, and dependencies of a package with appropriate indentation and spacing.
+    ///
+    /// # Arguments
+    ///
+    /// * `spacer` - A string used for indentation.
+    ///
+    /// # Returns
+    ///
+    /// * A `Result` containing the formatted string or a `std::fmt::Error` if formatting fails.
+    pub fn display_with_spacer( &self, spacer : &str ) -> Result< String, std::fmt::Error >
+    {
+      let mut f = String::new();
+
+      write!( f, "{}", self.info.name )?;
+      if let Some( version ) = &self.info.version { write!( f, " {version}" )? }
+      if let Some( crate_dir ) = &self.info.crate_dir { write!( f, " {}", crate_dir )? }
+      if self.info.duplicate { write!( f, "(*)" )? }
+      write!( f, "\n" )?;
+
+      let mut new_spacer = format!( "{spacer}{}  ", if self.info.normal_dependencies.len() < 2 { " " } else { self.symbols.down } );
+
+      let mut normal_dependencies_iter = self.info.normal_dependencies.iter();
+      let last = normal_dependencies_iter.next_back();
+
+      for dep in normal_dependencies_iter
+      {
+        write!( f, "{spacer}{}{} {}", self.symbols.tee, self.symbols.right, Self::display_with_spacer( &TreePrinter::new( dep ), &new_spacer )? )?;
+      }
+      if let Some( last ) = last
+      {
+        new_spacer = format!( "{spacer}   " );
+        write!( f, "{spacer}{}{} {}", self.symbols.ell, self.symbols.right, Self::display_with_spacer( &TreePrinter::new( last ), &new_spacer )? )?;
+      }
+      if !self.info.dev_dependencies.is_empty()
+      {
+        let mut dev_dependencies_iter = self.info.dev_dependencies.iter();
+        let last = dev_dependencies_iter.next_back();
+        write!( f, "{spacer}[dev-dependencies]\n" )?;
+        for dep in dev_dependencies_iter
+        {
+          write!( f, "{spacer}{}{} {}", self.symbols.tee, self.symbols.right, Self::display_with_spacer( &TreePrinter::new( dep ), &new_spacer )? )?;
+        }
+        // unwrap - safe because `is_empty` check
+        write!( f, "{spacer}{}{} {}", self.symbols.ell, self.symbols.right, Self::display_with_spacer( &TreePrinter::new( last.unwrap() ), &new_spacer )? )?;
+      }
+      if !self.info.build_dependencies.is_empty()
+      {
+        let mut build_dependencies_iter = self.info.build_dependencies.iter();
+        let last = build_dependencies_iter.next_back();
+        write!( f, "{spacer}[build-dependencies]\n" )?;
+        for dep in build_dependencies_iter
+        {
+          write!( f, "{spacer}{}{} {}", self.symbols.tee, self.symbols.right, Self::display_with_spacer( &TreePrinter::new( dep ), &new_spacer )? )?;
+        }
+        // unwrap - safe because `is_empty` check
+        write!( f, "{spacer}{}{} {}", self.symbols.ell, self.symbols.right, Self::display_with_spacer( &TreePrinter::new( last.unwrap() ), &new_spacer )? )?;
+      }
+
+      Ok( f )
+    }
+  }
+
+  impl std::fmt::Display for TreePrinter
+  {
+    fn fmt( &self, f : &mut Formatter< '_ > ) -> std::fmt::Result
+    {
+      write!( f, "{}", self.display_with_spacer( "" )? )?;
+
+      Ok( () )
+    }
+  }
+
+  #[ derive( Debug, Clone, Eq, PartialEq ) ]
+  struct Symbols
+  {
+    down : &'static str,
+    tee : &'static str,
+    ell : &'static str,
+    right : &'static str,
+  }
+
+  impl Default for Symbols
+  {
+    fn default() -> Self {
+      Self 
+      { 
+        down : "│",
+        tee  : "├",
+        ell  : "└",
+        right : "─", 
+      }
+    }
+  }
+
+  /// Represents a node in a dependency graph.
+  /// It holds essential information about the project dependencies. It is also capable
+  /// of holding any nested dependencies in a recursive manner, allowing the modeling
+  /// of complex dependency structures.
+  #[ derive( Debug, Clone, Eq, PartialEq ) ]
+  pub struct ListNodeReport
+  {
+    /// This could be the name of the library or crate.
+    pub name : String,
+    /// Ihe version of the crate.
+    pub version : Option< String >,
+    /// The path to the node's source files in the local filesystem. This is
+    /// optional as not all nodes may have a local presence (e.g., nodes representing remote crates).
+    pub crate_dir : Option< CrateDir >,
+    /// This field is a flag indicating whether the Node is a duplicate or not.
+    pub duplicate : bool,
+    /// A list that stores normal dependencies.
+    /// Each element in the list is also of the same 'ListNodeReport' type to allow
+    /// storage of nested dependencies.
+    pub normal_dependencies : Vec< ListNodeReport >,
+    /// A list that stores dev dependencies(dependencies required for tests or examples).
+    /// Each element in the list is also of the same 'ListNodeReport' type to allow
+    /// storage of nested dependencies.
+    pub dev_dependencies : Vec< ListNodeReport >,
+    /// A list that stores build dependencies.
+    /// Each element in the list is also of the same 'ListNodeReport' type to allow
+    /// storage of nested dependencies.
+    pub build_dependencies : Vec< ListNodeReport >,
+  }
+}
+
+crate::mod_interface!
+{
+  orphan use TreePrinter;
+  orphan use ListNodeReport;
+}
\ No newline at end of file
diff --git a/module/move/willbe/src/tool/url.rs b/module/move/willbe/src/tool/url.rs
index f841613d79..f9635d56db 100644
--- a/module/move/willbe/src/tool/url.rs
+++ b/module/move/willbe/src/tool/url.rs
@@ -1,13 +1,17 @@
+/// Internal namespace.
 mod private
 {
-  use error_tools::for_app::
+  #[ allow( unused_imports ) ]
+  use crate::tool::*;
+
+  use error::untyped::
   {
     format_err,
     Result,
   };
 
   /// Extracts the repository URL from a full URL.
-  pub fn extract_repo_url( full_url : &str ) -> Option< String >
+  pub fn repo_url_extract( full_url : &str ) -> Option< String >
   {
     let parts : Vec< &str > = full_url.split( '/' ).collect();
 
@@ -34,13 +38,13 @@ mod private
     }
     else
     {
-      Err( format_err!( "Fail to extract  git username and repository name" ) )
+      Err( format_err!( "Fail to extract git username and repository name" ) )
     }
   }
 }
 
 crate::mod_interface!
 {
-  protected use extract_repo_url;
+  protected use repo_url_extract;
   protected use git_info_extract;
 }
diff --git a/module/move/willbe/src/wtools.rs b/module/move/willbe/src/wtools.rs
index 58a2d73144..1ff22e50ab 100644
--- a/module/move/willbe/src/wtools.rs
+++ b/module/move/willbe/src/wtools.rs
@@ -1,28 +1,28 @@
-pub use error_tools::err;
-
-// pub use error_tools::BasicError;
-
-pub use mod_interface::mod_interface;
-
-/// error tools
-pub mod error
-{
-  pub use error_tools::*;
-  pub use error_tools::for_lib::*;
-  pub use::error_tools::dependency::*;
-}
-
-/// This module provides utilities for working with iterators.
-pub mod iter
-{
-  pub use iter_tools::prelude::*;
-}
-
-/// Collection of function and structures to manipulate paths.
-pub mod path_tools
-{
-  // pub use proper_path_tools::protected::*;
-  // pub use proper_path_tools::protected::path;
-  // xxx : make use proper_path_tools::protected::path working
-  pub use proper_path_tools::path;
-}
+// pub use error::err;
+//
+// // pub use error::BasicError;
+//
+// pub use mod_interface::mod_interface;
+//
+// /// error tools
+// pub mod error
+// {
+//   pub use error::*;
+//   pub use error::typed::*;
+//   pub use::error_tools::dependency::*;
+// }
+//
+// /// This module provides utilities for working with iterators.
+// pub mod iter
+// {
+//   pub use iter_tools::prelude::*;
+// }
+//
+// /// Collection of function and structures to manipulate paths.
+// pub mod path_tools
+// {
+//   // pub use proper_path_tools::protected::*;
+//   // pub use proper_path_tools::protected::path;
+//   // zzz : make use proper_path_tools::protected::path working
+//   pub use proper_path::protected as path;
+// }
diff --git a/module/move/willbe/template/deploy/Makefile.hbs b/module/move/willbe/template/deploy/Makefile.hbs
index 05601a05cf..2f3461aea8 100644
--- a/module/move/willbe/template/deploy/Makefile.hbs
+++ b/module/move/willbe/template/deploy/Makefile.hbs
@@ -43,129 +43,129 @@ export AWS_ACCESS_KEY_ID ?= $(SECRET_AWS_ACCESS_KEY_ID)
 # AWS Secret Access key for deploying to an EC2 instance
 export AWS_SECRET_ACCESS_KEY ?= $(SECRET_AWS_ACCESS_KEY)
 
-# Check Hetzner and deployment related keys 
+# Check Hetzner and deployment related keys
 check-hetzner-keys:
-	@[ -f key/SECRET_CSP_HETZNER ] \
+  @[ -f key/SECRET_CSP_HETZNER ] \
     || [ ! -z "${SECRET_CSP_HETZNER}" ] \
     || { echo "ERROR: File key/SECRET_CSP_HETZNER does not exist"; exit 1; }
 
-# Check AWS and deployment related keys 
+# Check AWS and deployment related keys
 check-aws-keys:
-	@[ -f key/SECRET_AWS_ACCESS_KEY_ID ] \
+  @[ -f key/SECRET_AWS_ACCESS_KEY_ID ] \
     || [ ! -z "${SECRET_AWS_ACCESS_KEY_ID}" ] \
     || echo "ERROR: File key/SECRET_AWS_ACCESS_KEY_ID does not exist"
-	@[ -f key/SECRET_AWS_ACCESS_KEY ] \
+  @[ -f key/SECRET_AWS_ACCESS_KEY ] \
     || [ ! -z "${SECRET_AWS_ACCESS_KEY}" ] \
     || echo "ERROR: File key/SECRET_AWS_ACCESS_KEY does not exist"
-	@[ -f key/SECRET_AWS_ACCESS_KEY_ID ] \
+  @[ -f key/SECRET_AWS_ACCESS_KEY_ID ] \
     || [ ! -z "${SECRET_AWS_ACCESS_KEY_ID}" ] \
     || exit 1
-	@[ -f key/SECRET_AWS_ACCESS_KEY ] \
+  @[ -f key/SECRET_AWS_ACCESS_KEY ] \
     || [ ! -z "${SECRET_AWS_ACCESS_KEY}" ] \
     || exit 1
 
 check-gce-keys:
-	@echo "All required GCE keys are the same as GCP keys" 
+  @echo "All required GCE keys are the same as GCP keys"
 
 # Check if required GCP keys are present
 check-gcp-keys:
-	@[ -f key/service_account.json ] \
+  @[ -f key/service_account.json ] \
     || echo "ERROR: File key/service_account.json does not exist"
-	@[ -f key/SECRET_STATE_ARCHIVE_KEY ] \
+  @[ -f key/SECRET_STATE_ARCHIVE_KEY ] \
     || [ ! -z "${SECRET_STATE_ARCHIVE_KEY}" ] \
     || echo "ERROR: File key/SECRET_STATE_ARCHIVE_KEY does not exist"
-	@[ -f key/service_account.json ] \
+  @[ -f key/service_account.json ] \
     || exit 1
-	@[ -f key/SECRET_STATE_ARCHIVE_KEY ] \
+  @[ -f key/SECRET_STATE_ARCHIVE_KEY ] \
     || [ ! -z "${SECRET_STATE_ARCHIVE_KEY}" ] \
     || exit 1
 
 # Start local docker container
 start:
-	docker compose up -d
+  docker compose up -d
 
 # Stop local docker container
 stop:
-	docker compose down
+  docker compose down
 
 # Remove created docker image
 clean: stop
-	docker rmi $(TF_VAR_IMAGE_NAME)
-	docker buildx prune -af
+  docker rmi $(TF_VAR_IMAGE_NAME)
+  docker buildx prune -af
 
 # Install gcloud for Debian/Ubuntu
 install-gcloud:
-	# GCloud
-	sudo apt-get update
-	sudo apt-get install -y apt-transport-https ca-certificates gnupg curl sudo
-	curl https://packages.cloud.google.com/apt/doc/apt-key.gpg | sudo gpg --dearmor -o /usr/share/keyrings/cloud.google.gpg
-	echo "deb [signed-by=/usr/share/keyrings/cloud.google.gpg] https://packages.cloud.google.com/apt cloud-sdk main" | sudo tee -a /etc/apt/sources.list.d/google-cloud-sdk.list
-	sudo apt-get update && sudo apt-get install -y google-cloud-cli
+  # GCloud
+  sudo apt-get update
+  sudo apt-get install -y apt-transport-https ca-certificates gnupg curl sudo
+  curl https://packages.cloud.google.com/apt/doc/apt-key.gpg | sudo gpg --dearmor -o /usr/share/keyrings/cloud.google.gpg
+  echo "deb [signed-by=/usr/share/keyrings/cloud.google.gpg] https://packages.cloud.google.com/apt cloud-sdk main" | sudo tee -a /etc/apt/sources.list.d/google-cloud-sdk.list
+  sudo apt-get update && sudo apt-get install -y google-cloud-cli
 
 # Install terraform for Debian/Ubuntu
 install-terraform:
-	sudo apt-get update && sudo apt-get install -y gnupg software-properties-common
-	wget -O- https://apt.releases.hashicorp.com/gpg | gpg --dearmor | sudo tee /usr/share/keyrings/hashicorp-archive-keyring.gpg
-	gpg --no-default-keyring --keyring /usr/share/keyrings/hashicorp-archive-keyring.gpg --fingerprint
-	echo "deb [signed-by=/usr/share/keyrings/hashicorp-archive-keyring.gpg] https://apt.releases.hashicorp.com $(lsb_release -cs) main" | sudo tee /etc/apt/sources.list.d/hashicorp.list
-	sudo apt update && sudo apt-get install terraform
+  sudo apt-get update && sudo apt-get install -y gnupg software-properties-common
+  wget -O- https://apt.releases.hashicorp.com/gpg | gpg --dearmor | sudo tee /usr/share/keyrings/hashicorp-archive-keyring.gpg
+  gpg --no-default-keyring --keyring /usr/share/keyrings/hashicorp-archive-keyring.gpg --fingerprint
+  echo "deb [signed-by=/usr/share/keyrings/hashicorp-archive-keyring.gpg] https://apt.releases.hashicorp.com $(lsb_release -cs) main" | sudo tee /etc/apt/sources.list.d/hashicorp.list
+  sudo apt update && sudo apt-get install terraform
 
 # Install gcloud and terraform
 install: install-gcloud install-terraform
-	gcloud --version
-	terraform -version
+  gcloud --version
+  terraform -version
 
 # Login to GCP with user account
 gcp-auth:
-	gcloud auth application-default login
+  gcloud auth application-default login
 
 # Authorize to GCP with service account
 gcp-service:
-	gcloud auth activate-service-account --key-file=$(google_sa_creds)
+  gcloud auth activate-service-account --key-file=$(google_sa_creds)
 
 # Add docker repo auth helper
 gcp-docker:
-	gcloud auth configure-docker $(TF_VAR_REGION)-docker.pkg.dev --quiet
+  gcloud auth configure-docker $(TF_VAR_REGION)-docker.pkg.dev --quiet
 
 # Initializes all terraform projects
 # Downloads required modules and validates .tf files
 tf-init:
-	terraform -chdir=$(tf_dir)/gar init
-	terraform -chdir=$(tf_dir)/gce init
-	terraform -chdir=$(tf_dir)/hetzner init
-	terraform -chdir=$(tf_dir)/aws init
+  terraform -chdir=$(tf_dir)/gar init
+  terraform -chdir=$(tf_dir)/gce init
+  terraform -chdir=$(tf_dir)/hetzner init
+  terraform -chdir=$(tf_dir)/aws init
 
 # Creates Artifact Registry repository on GCP in specified location
 create-artifact-repo: tf-init
-	terraform -chdir=$(tf_dir)/gar apply -auto-approve
+  terraform -chdir=$(tf_dir)/gar apply -auto-approve
 
 # Builds uarust_conf_site image
 build-image:
-	docker build . -t name:$(TF_VAR_IMAGE_NAME) -t $(tag)
+  docker build . -t name:$(TF_VAR_IMAGE_NAME) -t $(tag)
 
 # Builds and pushes local docker image to the private repository
 push-image: gcp-docker create-artifact-repo
-	docker push $(tag)
+  docker push $(tag)
 
 # Creates GCE instance with the website configured on boot
 create-gce: check-gce-keys gcp-service state_storage_pull push-image
-	terraform -chdir=$(tf_dir)/gce apply -auto-approve
+  terraform -chdir=$(tf_dir)/gce apply -auto-approve
 
 # Creates AWS EC2 instance with the website configured on boot
 create-aws: check-aws-keys gcp-service state_storage_pull push-image
-	terraform -chdir=$(tf_dir)/aws apply -auto-approve
+  terraform -chdir=$(tf_dir)/aws apply -auto-approve
 
 # Creates Hetzner instance with the website configured on boot
 create-hetzner: check-hetzner-keys gcp-service state_storage_pull push-image
-	terraform -chdir=$(tf_dir)/hetzner apply -auto-approve
+  terraform -chdir=$(tf_dir)/hetzner apply -auto-approve
 
 # Deploys everything and updates terraform states
 deploy-in-container: create-$(CSP) state_storage_push
 
 # Deploys using tools from the container
 deploy: check-gcp-keys build-image
-	docker build . -t deploy-$(TF_VAR_IMAGE_NAME) -f ./$(tf_dir)/Dockerfile --build-arg google_sa_creds="$(google_sa_creds)"
-	@docker run -v //var/run/docker.sock:/var/run/docker.sock -v .:/app \
+  docker build . -t deploy-$(TF_VAR_IMAGE_NAME) -f ./$(tf_dir)/Dockerfile --build-arg google_sa_creds="$(google_sa_creds)"
+  @docker run -v //var/run/docker.sock:/var/run/docker.sock -v .:/app \
     -e SECRET_STATE_ARCHIVE_KEY=$(SECRET_STATE_ARCHIVE_KEY) \
     -e SECRET_CSP_HETZNER=$(SECRET_CSP_HETZNER) \
     -e SECRET_AWS_ACCESS_KEY_ID=$(SECRET_AWS_ACCESS_KEY_ID) \
@@ -175,35 +175,35 @@ deploy: check-gcp-keys build-image
 
 # Review changes that terraform will do on apply
 tf-plan: tf-init
-	terraform -chdir=$(tf_dir)/gar plan
-	terraform -chdir=$(tf_dir)/gce plan
-	terraform -chdir=$(tf_dir)/hetzner plan
-	terraform -chdir=$(tf_dir)/aws plan
+  terraform -chdir=$(tf_dir)/gar plan
+  terraform -chdir=$(tf_dir)/gce plan
+  terraform -chdir=$(tf_dir)/hetzner plan
+  terraform -chdir=$(tf_dir)/aws plan
 
 # Destroy created infrastracture on GCP
 tf-destroy: tf-init
-	terraform -chdir=$(tf_dir)/gar destroy
-	terraform -chdir=$(tf_dir)/gce destroy
-	terraform -chdir=$(tf_dir)/hetzner destroy
-	terraform -chdir=$(tf_dir)/aws destroy
+  terraform -chdir=$(tf_dir)/gar destroy
+  terraform -chdir=$(tf_dir)/gce destroy
+  terraform -chdir=$(tf_dir)/hetzner destroy
+  terraform -chdir=$(tf_dir)/aws destroy
 
 # Pushes encrypted terraform state files to the GCS Bucket
 state_storage_push:
-	@echo Pushing encrypted terraform state files to the GCS Bucket
-	@gcloud storage cp $(tf_dir)/gce/terraform.tfstate gs://$(TF_VAR_BUCKET_NAME)/gce.tfstate --encryption-key="$(SECRET_STATE_ARCHIVE_KEY)"
-	@gcloud storage cp $(tf_dir)/gar/terraform.tfstate gs://$(TF_VAR_BUCKET_NAME)/gar.tfstate --encryption-key="$(SECRET_STATE_ARCHIVE_KEY)"
-	@gcloud storage cp $(tf_dir)/hetzner/terraform.tfstate gs://$(TF_VAR_BUCKET_NAME)/hetzner.tfstate --encryption-key="$(SECRET_STATE_ARCHIVE_KEY)"
-	@gcloud storage cp $(tf_dir)/aws/terraform.tfstate gs://$(TF_VAR_BUCKET_NAME)/aws.tfstate --encryption-key="$(SECRET_STATE_ARCHIVE_KEY)"
+  @echo Pushing encrypted terraform state files to the GCS Bucket
+  @gcloud storage cp $(tf_dir)/gce/terraform.tfstate gs://$(TF_VAR_BUCKET_NAME)/gce.tfstate --encryption-key="$(SECRET_STATE_ARCHIVE_KEY)"
+  @gcloud storage cp $(tf_dir)/gar/terraform.tfstate gs://$(TF_VAR_BUCKET_NAME)/gar.tfstate --encryption-key="$(SECRET_STATE_ARCHIVE_KEY)"
+  @gcloud storage cp $(tf_dir)/hetzner/terraform.tfstate gs://$(TF_VAR_BUCKET_NAME)/hetzner.tfstate --encryption-key="$(SECRET_STATE_ARCHIVE_KEY)"
+  @gcloud storage cp $(tf_dir)/aws/terraform.tfstate gs://$(TF_VAR_BUCKET_NAME)/aws.tfstate --encryption-key="$(SECRET_STATE_ARCHIVE_KEY)"
 
 # Pulls and decrypts terraform state files to the GCS Bucket
 state_storage_pull:
-	@echo Pulling terraform state files to the GCS Bucket
-	-@gcloud storage cp gs://$(TF_VAR_BUCKET_NAME)/gce.tfstate $(tf_dir)/gce/terraform.tfstate --decryption-keys="$(SECRET_STATE_ARCHIVE_KEY)"
-	-@gcloud storage cp gs://$(TF_VAR_BUCKET_NAME)/gar.tfstate $(tf_dir)/gar/terraform.tfstate --decryption-keys="$(SECRET_STATE_ARCHIVE_KEY)"
-	-@gcloud storage cp gs://$(TF_VAR_BUCKET_NAME)/hetzner.tfstate $(tf_dir)/hetzner/terraform.tfstate --decryption-keys="$(SECRET_STATE_ARCHIVE_KEY)"
-	-@gcloud storage cp gs://$(TF_VAR_BUCKET_NAME)/aws.tfstate $(tf_dir)/aws/terraform.tfstate --decryption-keys="$(SECRET_STATE_ARCHIVE_KEY)"
+  @echo Pulling terraform state files to the GCS Bucket
+  -@gcloud storage cp gs://$(TF_VAR_BUCKET_NAME)/gce.tfstate $(tf_dir)/gce/terraform.tfstate --decryption-keys="$(SECRET_STATE_ARCHIVE_KEY)"
+  -@gcloud storage cp gs://$(TF_VAR_BUCKET_NAME)/gar.tfstate $(tf_dir)/gar/terraform.tfstate --decryption-keys="$(SECRET_STATE_ARCHIVE_KEY)"
+  -@gcloud storage cp gs://$(TF_VAR_BUCKET_NAME)/hetzner.tfstate $(tf_dir)/hetzner/terraform.tfstate --decryption-keys="$(SECRET_STATE_ARCHIVE_KEY)"
+  -@gcloud storage cp gs://$(TF_VAR_BUCKET_NAME)/aws.tfstate $(tf_dir)/aws/terraform.tfstate --decryption-keys="$(SECRET_STATE_ARCHIVE_KEY)"
 
 # Creates GCS Bucket for terraform states
 state_storage_init:
-	terraform -chdir=$(tf_dir)/gcs init
-	terraform -chdir=$(tf_dir)/gcs apply
+  terraform -chdir=$(tf_dir)/gcs init
+  terraform -chdir=$(tf_dir)/gcs apply
diff --git a/module/move/willbe/template/workspace/Makefile b/module/move/willbe/template/workspace/Makefile
index b1036cde01..994c511991 100644
--- a/module/move/willbe/template/workspace/Makefile
+++ b/module/move/willbe/template/workspace/Makefile
@@ -22,10 +22,10 @@ VERSION ?= $(strip $(shell grep -m1 'version = "' Cargo.toml | cut -d '"' -f2))
 # Sync local repostiry.
 #
 # Usage :
-#	make git.sync [message='description of changes']
+#  make git.sync [message='description of changes']
 
 git.sync :
-	git add --all && git commit -am $(message) && git pull
+  git add --all && git commit -am $(message) && git pull
 
 sync : git.sync
 
@@ -36,10 +36,10 @@ sync : git.sync
 # Check vulnerabilities with cargo-audit.
 #
 # Usage :
-#	make audit
+#  make audit
 
 audit :
-	cargo audit
+  cargo audit
 
 #
 # === General commands
@@ -48,88 +48,88 @@ audit :
 # Generate crates documentation from Rust sources.
 #
 # Usage :
-#	make doc [private=(yes|no)] [open=(yes|no)] [clean=(no|yes)] [manifest_path=(|[path])]
+#  make doc [private=(yes|no)] [open=(yes|no)] [clean=(no|yes)] [manifest_path=(|[path])]
 
 doc :
 ifeq ($(clean),yes)
-	@rm -rf target/doc/
+  @rm -rf target/doc/
 endif
-	cargo doc --all-features \
-		$(if $(call eq,$(private),no),,--document-private-items) \
-		$(if $(call eq,$(manifest_path),),--manifest-path ./Cargo.toml,--manifest-path $(manifest_path)) \
-		$(if $(call eq,$(open),no),,--open)
+  cargo doc --all-features \
+    $(if $(call eq,$(private),no),,--document-private-items) \
+    $(if $(call eq,$(manifest_path),),--manifest-path ./Cargo.toml,--manifest-path $(manifest_path)) \
+    $(if $(call eq,$(open),no),,--open)
 
 # Lint Rust sources with Clippy.
 #
 # Usage :
-#	make lint [warnings=(no|yes)] [manifest_path=(|[path])]
+#  make lint [warnings=(no|yes)] [manifest_path=(|[path])]
 
 lint :
-	cargo clippy --all-features \
-		$(if $(call eq,$(manifest_path),),--manifest-path ./Cargo.toml,--manifest-path $(manifest_path)) \
-		$(if $(call eq,$(warnings),no),-- -D warnings,)
+  cargo clippy --all-features \
+    $(if $(call eq,$(manifest_path),),--manifest-path ./Cargo.toml,--manifest-path $(manifest_path)) \
+    $(if $(call eq,$(warnings),no),-- -D warnings,)
 
 # Check Rust sources `check`.
 #
 # Usage :
-#	make check [manifest_path=(|[path])]
+#  make check [manifest_path=(|[path])]
 
 check :
-	cargo check \
-		$(if $(call eq,$(manifest_path),),--manifest-path ./Cargo.toml,--manifest-path $(manifest_path))
+  cargo check \
+    $(if $(call eq,$(manifest_path),),--manifest-path ./Cargo.toml,--manifest-path $(manifest_path))
 
 # Format and lint Rust sources.
 #
 # Usage :
-#	make normalize
+#  make normalize
 
 normalize : fmt lint
 
 # Perform common checks on the module.
 #
 # Usage :
-#	make checkmate
+#  make checkmate
 
 checkmate : doc lint check
 
 # Format Rust sources with rustfmt.
 #
 # Usage :
-#	make fmt [check=(no|yes)]
+#  make fmt [check=(no|yes)]
 
 fmt :
-	{ find -L module -name *.rs -print0 ; } | xargs -0 rustfmt +nightly $(if $(call eq,$(check),yes),-- --check,)
+  { find -L module -name *.rs -print0 ; } | xargs -0 rustfmt +nightly $(if $(call eq,$(check),yes),-- --check,)
 
 # cargo +nightly fmt --all $(if $(call eq,$(check),yes),-- --check,)
 
 # Run project Rust sources with Cargo.
 #
 # Usage :
-#	make up
+#  make up
 
 up :
-	cargo up
+  cargo up
 
 # Run project Rust sources with Cargo.
 #
 # Usage :
-#	make clean
+#  make clean
 
 clean :
-	cargo clean && rm -rf Cargo.lock && cargo cache -a && cargo update
+  cargo clean && rm -rf Cargo.lock && cargo cache -a && cargo update
 
 # Run Rust tests of project.
 #
 # Usage :
-#	make test
+#  make test
 
 test :
-	cargo test --all-features
+  cargo test --all-features
 
 # Run format link test and tests.
 #
 # Usage :
-#	make all
+#  make all
 
 all : fmt lint test
 
@@ -138,14 +138,14 @@ all : fmt lint test
 #
 
 .PHONY : \
-	all \
-	audit \
-	docs \
-	lint \
-	check \
-	fmt \
-	normalize \
-	checkmate \
-	test \
-	up \
-	doc
+  all \
+  audit \
+  docs \
+  lint \
+  check \
+  fmt \
+  normalize \
+  checkmate \
+  test \
+  up \
+  doc
diff --git a/module/move/willbe/template/workspace/module/module1/Cargo.toml.x b/module/move/willbe/template/workspace/module/module1/Cargo.toml.x
index 9cf134e518..eba1f8da41 100644
--- a/module/move/willbe/template/workspace/module/module1/Cargo.toml.x
+++ b/module/move/willbe/template/workspace/module/module1/Cargo.toml.x
@@ -13,4 +13,4 @@ workspace = true
 features = [ "full" ]
 all-features = false
 
-# exclude = [ "/tests", "/examples", "-*" ]
+
diff --git a/module/move/willbe/template/workspace/module/module1/examples/module1_example.rs b/module/move/willbe/template/workspace/module/module1/examples/module1_example.rs
index 1ce8bc56f8..d7a0d23ef4 100644
--- a/module/move/willbe/template/workspace/module/module1/examples/module1_example.rs
+++ b/module/move/willbe/template/workspace/module/module1/examples/module1_example.rs
@@ -7,6 +7,6 @@ use example_module::hello;
 ///test
 fn main()
 {
-	let h = hello();
-	println!( "{}", h );
+  let h = hello();
+  println!( "{}", h );
 }
diff --git a/module/move/willbe/template/workspace/module/module1/src/lib.rs b/module/move/willbe/template/workspace/module/module1/src/lib.rs
index d7b38faf6c..19c783b9ef 100644
--- a/module/move/willbe/template/workspace/module/module1/src/lib.rs
+++ b/module/move/willbe/template/workspace/module/module1/src/lib.rs
@@ -3,5 +3,5 @@
 /// Example
 pub fn hello() -> String
 {
-	"hello world!".into()
+  "hello world!".into()
 }
diff --git a/module/move/willbe/template/workspace/module/module1/tests/hello_test.rs b/module/move/willbe/template/workspace/module/module1/tests/hello_test.rs
index 7ea32f1cba..06400d06b3 100644
--- a/module/move/willbe/template/workspace/module/module1/tests/hello_test.rs
+++ b/module/move/willbe/template/workspace/module/module1/tests/hello_test.rs
@@ -5,5 +5,5 @@ use example_module::*;
 #[ test ]
 fn example_test()
 {
-	assert_eq!( "hello world!".to_string(), hello() );
+  assert_eq!( "hello world!".to_string(), hello() );
 }
diff --git a/module/move/willbe/tests/inc/action/cicd_renew.rs b/module/move/willbe/tests/inc/action_tests/cicd_renew.rs
similarity index 92%
rename from module/move/willbe/tests/inc/action/cicd_renew.rs
rename to module/move/willbe/tests/inc/action_tests/cicd_renew.rs
index 4f9b0bc17b..ffbbe5b570 100644
--- a/module/move/willbe/tests/inc/action/cicd_renew.rs
+++ b/module/move/willbe/tests/inc/action_tests/cicd_renew.rs
@@ -1,16 +1,17 @@
 use super::*;
 use assert_fs::prelude::*;
-use the_module::action;
+use the_module::
+{
+  action,
+  collection::HashMap,
+};
 
 //
 
-// aaa : for Petro : rid off redundant namespace. ask
-// aaa : remove
 use std::
 {
   fs::File,
   io::Read,
-  collections::HashMap
 };
 use std::fs::create_dir_all;
 use serde::Deserialize;
@@ -69,10 +70,10 @@ fn default_case()
     uses : "Username/test/.github/workflows/standard_rust_push.yml@alpha".into(),
     with
   };
-  let expected = Workflow
+  let exp = Workflow
   {
     name : "test_module".into(),
-    on : 
+    on :
     {
       let mut map = HashMap::new();
       let mut push_map = HashMap::new();
@@ -90,13 +91,14 @@ fn default_case()
 
   // Act
   _ = action::cicd_renew( &temp ).unwrap();
+  dbg!( &file_path );
 
   // Assert
   let mut file = File::open( file_path ).unwrap();
   let mut content = String::new();
   _ = file.read_to_string( &mut content ).unwrap();
-  let actual: Workflow = serde_yaml::from_str( &content ).unwrap();
-  assert_eq!( expected, actual );
+  let got : Workflow = serde_yaml::from_str( &content ).unwrap();
+  assert_eq!( got, exp );
 
   assert!( base_path.join( "appropriate_branch.yml" ).exists() );
   assert!( base_path.join( "appropriate_branch_beta.yml" ).exists() );
diff --git a/module/move/willbe/tests/inc/action/features.rs b/module/move/willbe/tests/inc/action_tests/features.rs
similarity index 86%
rename from module/move/willbe/tests/inc/action/features.rs
rename to module/move/willbe/tests/inc/action_tests/features.rs
index c27e99c3b4..5e2607bad8 100644
--- a/module/move/willbe/tests/inc/action/features.rs
+++ b/module/move/willbe/tests/inc/action_tests/features.rs
@@ -18,8 +18,9 @@ fn package_no_features()
 {
   // Arrange
   let temp = arrange( "three_packages/b" );
+  // let x : PathBuf = temp.path().to_owned();
   let options = willbe::action::features::FeaturesOptions::former()
-  .manifest_dir( willbe::_path::AbsolutePath::try_from( temp.path().to_owned() ).unwrap() )
+  .crate_dir( willbe::CrateDir::try_from( temp.path().to_owned() ).unwrap() )
   .form();
 
   // Act
@@ -38,7 +39,7 @@ fn package_features()
   // Arrange
   let temp = arrange( "three_packages_with_features/b" );
   let options = willbe::action::features::FeaturesOptions::former()
-  .manifest_dir( willbe::_path::AbsolutePath::try_from( temp.path().to_owned() ).unwrap() )
+  .crate_dir( willbe::CrateDir::try_from( temp.path().to_owned() ).unwrap() )
   .form();
 
   // Act
@@ -60,7 +61,7 @@ fn package_features_with_features_deps()
 {
   let temp = arrange( "three_packages_with_features/b" );
   let options = willbe::action::features::FeaturesOptions::former()
-  .manifest_dir( willbe::_path::AbsolutePath::try_from( temp.path().to_owned() ).unwrap() )
+  .crate_dir( willbe::CrateDir::try_from( temp.path().to_owned() ).unwrap() )
   .with_features_deps( true )
   .form();
 
@@ -84,7 +85,7 @@ fn workspace_no_features()
   // Arrange
   let temp = arrange( "three_packages" );
   let options = willbe::action::features::FeaturesOptions::former()
-  .manifest_dir( willbe::_path::AbsolutePath::try_from( temp.path().to_owned() ).unwrap() )
+  .crate_dir( willbe::CrateDir::try_from( temp.path().to_owned() ).unwrap() )
   .form();
 
   // Act
@@ -113,7 +114,7 @@ fn workspace_features()
   // Arrange
   let temp = arrange( "three_packages_with_features" );
   let options = willbe::action::features::FeaturesOptions::former()
-  .manifest_dir( willbe::_path::AbsolutePath::try_from( temp.path().to_owned() ).unwrap() )
+  .crate_dir( willbe::CrateDir::try_from( temp.path().to_owned() ).unwrap() )
   .form();
 
   // Act
@@ -150,7 +151,7 @@ fn workspace_features_with_features_deps()
   // Arrange
   let temp = arrange( "three_packages_with_features" );
   let options = willbe::action::features::FeaturesOptions::former()
-  .manifest_dir( willbe::_path::AbsolutePath::try_from( temp.path().to_owned() ).unwrap() )
+  .crate_dir( willbe::CrateDir::try_from( temp.path().to_owned() ).unwrap() )
   .with_features_deps( true )
   .form();
 
diff --git a/module/move/willbe/tests/inc/action/list.rs b/module/move/willbe/tests/inc/action_tests/list.rs
similarity index 100%
rename from module/move/willbe/tests/inc/action/list.rs
rename to module/move/willbe/tests/inc/action_tests/list.rs
diff --git a/module/move/willbe/tests/inc/action/list/data.rs b/module/move/willbe/tests/inc/action_tests/list/data.rs
similarity index 87%
rename from module/move/willbe/tests/inc/action/list/data.rs
rename to module/move/willbe/tests/inc/action_tests/list/data.rs
index 17fc6230b6..423baf654c 100644
--- a/module/move/willbe/tests/inc/action/list/data.rs
+++ b/module/move/willbe/tests/inc/action_tests/list/data.rs
@@ -3,7 +3,7 @@ use super::*;
 use assert_fs::prelude::*;
 use the_module::action::{ self, list::* };
 use willbe::CrateDir;
-use willbe::_path::AbsolutePath;
+use willbe::path::AbsolutePath;
 
 
 //
@@ -51,13 +51,13 @@ mod chain_of_three_packages
 
     assert_eq!( 1, trees.len() );
     let tree = &trees[ 0 ];
-    assert_eq!( "_chain_of_packages_a", tree.name.as_str() );
+    assert_eq!( "_chain_of_packages_a", tree.info.name.as_str() );
 
-    assert_eq!( 1, tree.normal_dependencies.len() );
-    assert!( tree.dev_dependencies.is_empty() );
-    assert!( tree.build_dependencies.is_empty() );
+    assert_eq!( 1, tree.info.normal_dependencies.len() );
+    assert!( tree.info.dev_dependencies.is_empty() );
+    assert!( tree.info.build_dependencies.is_empty() );
 
-    let sub_tree = &tree.normal_dependencies[ 0 ];
+    let sub_tree = &tree.info.normal_dependencies[ 0 ];
     assert_eq!( "_chain_of_packages_b", sub_tree.name.as_str() );
 
     assert_eq!( 1, sub_tree.normal_dependencies.len() );
@@ -73,16 +73,16 @@ mod chain_of_three_packages
   }
 
   #[ test ]
-  fn list_format_for_single_package()
+  fn list_format_for_single_package_1()
   {
     // Arrange
     let temp = arrange();
     let args = ListOptions::former()
-      .path_to_manifest( crate_dir( &temp.join( "a" ) ) )
-      .format( ListFormat::Topological )
-      .dependency_sources([ DependencySource::Local ])
-      .dependency_categories([ DependencyCategory::Primary ])
-      .form();
+    .path_to_manifest( crate_dir( &temp.join( "a" ) ) )
+    .format( ListFormat::Topological )
+    .dependency_sources([ DependencySource::Local ])
+    .dependency_categories([ DependencyCategory::Primary ])
+    .form();
 
     // Act
     let output = action::list( args ).unwrap();
@@ -152,13 +152,13 @@ mod package_with_remote_dependency
 
     assert_eq!( 1, trees.len() );
     let tree = &trees[ 0 ];
-    assert_eq!( "_package_with_remote_dep_a", tree.name.as_str() );
+    assert_eq!( "_package_with_remote_dep_a", tree.info.name.as_str() );
 
-    assert_eq!( 2, tree.normal_dependencies.len() );
-    assert!( tree.dev_dependencies.is_empty() );
-    assert!( tree.build_dependencies.is_empty() );
+    assert_eq!( 2, tree.info.normal_dependencies.len() );
+    assert!( tree.info.dev_dependencies.is_empty() );
+    assert!( tree.info.build_dependencies.is_empty() );
 
-    let [ sub_tree_1, sub_tree_2, .. ] = tree.normal_dependencies.as_slice() else { unreachable!() };
+    let [ sub_tree_1, sub_tree_2, .. ] = tree.info.normal_dependencies.as_slice() else { unreachable!() };
     assert_eq!( "_package_with_remote_dep_b", sub_tree_1.name.as_str() );
     assert!( sub_tree_1.normal_dependencies.is_empty() );
     assert!( sub_tree_1.dev_dependencies.is_empty() );
@@ -171,7 +171,7 @@ mod package_with_remote_dependency
   }
 
   #[ test ]
-  fn list_format_for_single_package()
+  fn list_format_for_single_package_2()
   {
     // Arrange
     let temp = arrange();
@@ -250,14 +250,14 @@ mod workspace_with_cyclic_dependency
 
     assert_eq!( 1, trees.len() );
     let tree = &trees[ 0 ];
-    assert_eq!( "_workspace_with_cyclic_dep_a", tree.name.as_str() );
-    assert_eq!( "0.1.0", tree.version.as_ref().unwrap().as_str() );
+    assert_eq!( "_workspace_with_cyclic_dep_a", tree.info.name.as_str() );
+    assert_eq!( "0.1.0", tree.info.version.as_ref().unwrap().as_str() );
 
-    assert_eq!( 1, tree.normal_dependencies.len() );
-    assert!( tree.dev_dependencies.is_empty() );
-    assert!( tree.build_dependencies.is_empty() );
+    assert_eq!( 1, tree.info.normal_dependencies.len() );
+    assert!( tree.info.dev_dependencies.is_empty() );
+    assert!( tree.info.build_dependencies.is_empty() );
 
-    let sub_tree = &tree.normal_dependencies[ 0 ];
+    let sub_tree = &tree.info.normal_dependencies[ 0 ];
     assert_eq!( "_workspace_with_cyclic_dep_b", sub_tree.name.as_str() );
     assert_eq!( "*", sub_tree.version.as_ref().unwrap().as_str() );
 
diff --git a/module/move/willbe/tests/inc/action/list/format.rs b/module/move/willbe/tests/inc/action_tests/list/format.rs
similarity index 82%
rename from module/move/willbe/tests/inc/action/list/format.rs
rename to module/move/willbe/tests/inc/action_tests/list/format.rs
index 42d492cf9d..84b7f32a96 100644
--- a/module/move/willbe/tests/inc/action/list/format.rs
+++ b/module/move/willbe/tests/inc/action_tests/list/format.rs
@@ -1,6 +1,7 @@
 use super::*;
 
-use the_module::action::list::ListNodeReport;
+use the_module::tree::ListNodeReport;
+use willbe::tree::TreePrinter;
 
 #[ test ]
 fn node_with_depth_two_leaves_stop_spacer()
@@ -9,7 +10,7 @@ fn node_with_depth_two_leaves_stop_spacer()
   {
     name : "node".into(),
     version : None,
-    path : None,
+    crate_dir : None,
     duplicate : false,
     normal_dependencies : vec!
     [
@@ -17,13 +18,13 @@ fn node_with_depth_two_leaves_stop_spacer()
       {
         name : "sub_node1".into(),
         version : None,
-        path : None,
+        crate_dir : None,
         duplicate : false,
         normal_dependencies : vec![ ListNodeReport
         {
           name : "sub_sub_node1".into(),
           version : None,
-          path : None,
+          crate_dir : None,
           duplicate : false,
           normal_dependencies : vec![],
           dev_dependencies : vec![],
@@ -36,13 +37,13 @@ fn node_with_depth_two_leaves_stop_spacer()
       {
         name : "sub_node2".into(),
         version : None,
-        path : None,
+        crate_dir : None,
         duplicate : false,
         normal_dependencies : vec![ ListNodeReport
         {
           name : "sub_sub_node2".into(),
           version : None,
-          path : None,
+          crate_dir : None,
           duplicate : false,
           normal_dependencies : vec![],
           dev_dependencies : vec![],
@@ -63,7 +64,8 @@ node
    └─ sub_sub_node2
 "#.trim();
 
-  let actual = node.display_with_spacer( "" ).unwrap();
+  let printer = TreePrinter::new( &node );
+  let actual = printer.display_with_spacer( "" ).unwrap();
   let actual = actual.trim();
   println!("{actual}");
 
@@ -77,7 +79,7 @@ fn node_with_depth_two_leaves()
   {
     name : "node".into(),
     version : None,
-    path : None,
+    crate_dir : None,
     duplicate : false,
     normal_dependencies : vec!
     [
@@ -85,13 +87,13 @@ fn node_with_depth_two_leaves()
       {
         name : "sub_node1".into(),
         version : None,
-        path : None,
+        crate_dir : None,
         duplicate : false,
         normal_dependencies : vec![ ListNodeReport
         {
           name : "sub_sub_node".into(),
           version : None,
-          path : None,
+          crate_dir : None,
           duplicate : false,
           normal_dependencies : vec![],
           dev_dependencies : vec![],
@@ -104,7 +106,7 @@ fn node_with_depth_two_leaves()
       {
         name : "sub_node2".into(),
         version : None,
-        path : None,
+        crate_dir : None,
         duplicate : false,
         normal_dependencies : vec![],
         dev_dependencies : vec![],
@@ -121,7 +123,8 @@ node
 └─ sub_node2
 "#.trim();
 
-  let actual = node.display_with_spacer( "" ).unwrap();
+  let printer = TreePrinter::new( &node );
+  let actual = printer.display_with_spacer( "" ).unwrap();
   let actual = actual.trim();
   println!("{actual}");
 
@@ -135,19 +138,19 @@ fn node_with_depth_one_leaf()
   {
     name : "node".into(),
     version : None,
-    path : None,
+    crate_dir : None,
     duplicate : false,
     normal_dependencies : vec![ ListNodeReport
     {
       name : "sub_node".into(),
       version : None,
-      path : None,
+      crate_dir : None,
       duplicate : false,
       normal_dependencies : vec![ ListNodeReport
       {
         name : "sub_sub_node".into(),
         version : None,
-        path : None,
+        crate_dir : None,
         duplicate : false,
         normal_dependencies : vec![],
         dev_dependencies : vec![],
@@ -165,7 +168,8 @@ node
    └─ sub_sub_node
 "#.trim();
 
-  let actual = node.display_with_spacer( "" ).unwrap();
+  let printer = TreePrinter::new( &node );
+  let actual = printer.display_with_spacer( "" ).unwrap();
   let actual = actual.trim();
   println!("{actual}");
 
@@ -179,7 +183,7 @@ fn node_with_build_dependencies_tree_with_two_leaves()
   {
     name : "node".into(),
     version : None,
-    path : None,
+    crate_dir : None,
     duplicate : false,
     normal_dependencies : vec![],
     dev_dependencies : vec![],
@@ -189,7 +193,7 @@ fn node_with_build_dependencies_tree_with_two_leaves()
       {
         name : "build_sub_node1".into(),
         version : None,
-        path : None,
+        crate_dir : None,
         duplicate : false,
         normal_dependencies : vec![],
         dev_dependencies : vec![],
@@ -199,7 +203,7 @@ fn node_with_build_dependencies_tree_with_two_leaves()
       {
         name : "build_sub_node2".into(),
         version : None,
-        path : None,
+        crate_dir : None,
         duplicate : false,
         normal_dependencies : vec![],
         dev_dependencies : vec![],
@@ -214,7 +218,8 @@ node
 └─ build_sub_node2
 "#.trim();
 
-  let actual = node.display_with_spacer( "" ).unwrap();
+  let printer = TreePrinter::new( &node );
+  let actual = printer.display_with_spacer( "" ).unwrap();
   let actual = actual.trim();
   println!("{actual}");
 
@@ -228,7 +233,7 @@ fn node_with_build_dependencies_tree_with_one_leaf()
   {
     name : "node".into(),
     version : None,
-    path : None,
+    crate_dir : None,
     duplicate : false,
     normal_dependencies : vec![],
     dev_dependencies : vec![],
@@ -237,7 +242,7 @@ fn node_with_build_dependencies_tree_with_one_leaf()
       {
         name : "build_sub_node".into(),
         version : None,
-        path : None,
+        crate_dir : None,
         duplicate : false,
         normal_dependencies : vec![],
         dev_dependencies : vec![],
@@ -251,7 +256,8 @@ node
 └─ build_sub_node
 "#.trim();
 
-  let actual = node.display_with_spacer( "" ).unwrap();
+  let printer = TreePrinter::new( &node );
+  let actual = printer.display_with_spacer( "" ).unwrap();
   let actual = actual.trim();
   println!("{actual}");
 
@@ -265,7 +271,7 @@ fn node_with_dev_dependencies_tree_with_two_leaves()
   {
     name : "node".into(),
     version : None,
-    path : None,
+    crate_dir : None,
     duplicate : false,
     normal_dependencies : vec![],
     dev_dependencies : vec!
@@ -274,7 +280,7 @@ fn node_with_dev_dependencies_tree_with_two_leaves()
       {
         name : "dev_sub_node1".into(),
         version : None,
-        path : None,
+        crate_dir : None,
         duplicate : false,
         normal_dependencies : vec![],
         dev_dependencies : vec![],
@@ -284,7 +290,7 @@ fn node_with_dev_dependencies_tree_with_two_leaves()
       {
         name : "dev_sub_node2".into(),
         version : None,
-        path : None,
+        crate_dir : None,
         duplicate : false,
         normal_dependencies : vec![],
         dev_dependencies : vec![],
@@ -300,7 +306,8 @@ node
 └─ dev_sub_node2
 "#.trim();
 
-  let actual = node.display_with_spacer( "" ).unwrap();
+  let printer = TreePrinter::new( &node );
+  let actual = printer.display_with_spacer( "" ).unwrap();
   let actual = actual.trim();
   println!("{actual}");
 
@@ -314,7 +321,7 @@ fn node_with_dev_dependencies_tree_with_one_leaf()
   {
     name : "node".into(),
     version : None,
-    path : None,
+    crate_dir : None,
     duplicate : false,
     normal_dependencies : vec![],
     dev_dependencies : vec![
@@ -322,7 +329,7 @@ fn node_with_dev_dependencies_tree_with_one_leaf()
       {
         name : "dev_sub_node".into(),
         version : None,
-        path : None,
+        crate_dir : None,
         duplicate : false,
         normal_dependencies : vec![],
         dev_dependencies : vec![],
@@ -337,7 +344,8 @@ node
 └─ dev_sub_node
 "#.trim();
 
-  let actual = node.display_with_spacer( "" ).unwrap();
+  let printer = TreePrinter::new( &node );
+  let actual = printer.display_with_spacer( "" ).unwrap();
   let actual = actual.trim();
   println!("{actual}");
 
@@ -351,7 +359,7 @@ fn node_with_dependencies_tree_with_two_leaves()
   {
     name : "node".into(),
     version : None,
-    path : None,
+    crate_dir : None,
     duplicate : false,
     normal_dependencies : vec!
     [
@@ -359,7 +367,7 @@ fn node_with_dependencies_tree_with_two_leaves()
       {
         name : "sub_node1".into(),
         version : None,
-        path : None,
+        crate_dir : None,
         duplicate : false,
         normal_dependencies : vec![],
         dev_dependencies : vec![],
@@ -369,7 +377,7 @@ fn node_with_dependencies_tree_with_two_leaves()
       {
         name : "sub_node2".into(),
         version : None,
-        path : None,
+        crate_dir : None,
         duplicate : false,
         normal_dependencies : vec![],
         dev_dependencies : vec![],
@@ -385,7 +393,8 @@ node
 └─ sub_node2
 "#.trim();
 
-  let actual = node.display_with_spacer( "" ).unwrap();
+  let printer = TreePrinter::new( &node );
+  let actual = printer.display_with_spacer( "" ).unwrap();
   let actual = actual.trim();
   println!("{actual}");
 
@@ -399,13 +408,13 @@ fn node_with_dependency_tree_with_one_leaf()
   {
     name : "node".into(),
     version : None,
-    path : None,
+    crate_dir : None,
     duplicate : false,
     normal_dependencies : vec![ ListNodeReport
     {
       name : "sub_node".into(),
       version : None,
-      path : None,
+      crate_dir : None,
       duplicate : false,
       normal_dependencies : vec![],
       dev_dependencies : vec![],
@@ -419,7 +428,8 @@ node
 └─ sub_node
 "#.trim();
 
-  let actual = node.display_with_spacer( "" ).unwrap();
+  let printer = TreePrinter::new( &node );
+  let actual = printer.display_with_spacer( "" ).unwrap();
   let actual = actual.trim();
   println!("{actual}");
 
@@ -433,7 +443,7 @@ fn one_node_one_line()
   {
     name : "node".into(),
     version : None,
-    path : None,
+    crate_dir : None,
     duplicate : false,
     normal_dependencies : vec![],
     dev_dependencies : vec![],
@@ -441,7 +451,8 @@ fn one_node_one_line()
   };
   let expected = "node\n";
 
-  let actual = node.display_with_spacer( "" ).unwrap();
+  let printer = TreePrinter::new( &node );
+  let actual = printer.display_with_spacer( "" ).unwrap();
   println!("{actual}");
 
   assert_eq!( expected, actual );
diff --git a/module/move/willbe/tests/inc/action/main_header.rs b/module/move/willbe/tests/inc/action_tests/main_header.rs
similarity index 99%
rename from module/move/willbe/tests/inc/action/main_header.rs
rename to module/move/willbe/tests/inc/action_tests/main_header.rs
index abc3e492d4..82f1b89fba 100644
--- a/module/move/willbe/tests/inc/action/main_header.rs
+++ b/module/move/willbe/tests/inc/action_tests/main_header.rs
@@ -3,7 +3,7 @@ use assert_fs::prelude::*;
 use the_module::action;
 
 use std::io::Read;
-use willbe::_path::AbsolutePath;
+use willbe::path::AbsolutePath;
 
 
 fn arrange( source : &str ) -> assert_fs::TempDir
diff --git a/module/move/willbe/tests/inc/action/mod.rs b/module/move/willbe/tests/inc/action_tests/mod.rs
similarity index 100%
rename from module/move/willbe/tests/inc/action/mod.rs
rename to module/move/willbe/tests/inc/action_tests/mod.rs
diff --git a/module/move/willbe/tests/inc/action/readme_health_table_renew.rs b/module/move/willbe/tests/inc/action_tests/readme_health_table_renew.rs
similarity index 100%
rename from module/move/willbe/tests/inc/action/readme_health_table_renew.rs
rename to module/move/willbe/tests/inc/action_tests/readme_health_table_renew.rs
diff --git a/module/move/willbe/tests/inc/action/readme_modules_headers_renew.rs b/module/move/willbe/tests/inc/action_tests/readme_modules_headers_renew.rs
similarity index 83%
rename from module/move/willbe/tests/inc/action/readme_modules_headers_renew.rs
rename to module/move/willbe/tests/inc/action_tests/readme_modules_headers_renew.rs
index 8fe71df94a..db82f365ba 100644
--- a/module/move/willbe/tests/inc/action/readme_modules_headers_renew.rs
+++ b/module/move/willbe/tests/inc/action_tests/readme_modules_headers_renew.rs
@@ -1,8 +1,12 @@
 use super::*;
 use assert_fs::prelude::*;
-use the_module::action;
 use std::io::Read;
-use willbe::_path::AbsolutePath;
+use the_module::
+{
+  action,
+  // path::AbsolutePath,
+  CrateDir,
+};
 
 fn arrange( source : &str ) -> assert_fs::TempDir
 {
@@ -28,7 +32,7 @@ fn tags_should_stay()
   let temp = arrange( "single_module" );
 
   // Act
-  _ = action::readme_modules_headers_renew( AbsolutePath::try_from( temp.path() ).unwrap() ).unwrap();
+  _ = action::readme_modules_headers_renew( CrateDir::try_from( temp.path() ).unwrap() ).unwrap();
   let mut file = std::fs::File::open( temp.path().join( "test_module" ).join( "Readme.md" ) ).unwrap();
 
   let mut actual = String::new();
@@ -47,7 +51,7 @@ fn default_stability()
   let temp = arrange( "single_module" );
 
   // Act
-  _ = action::readme_modules_headers_renew( AbsolutePath::try_from( temp.path() ).unwrap() ).unwrap();
+  _ = action::readme_modules_headers_renew( CrateDir::try_from( temp.path() ).unwrap() ).unwrap();
   let mut file = std::fs::File::open( temp.path().join( "test_module" ).join( "Readme.md" ) ).unwrap();
 
   let mut actual = String::new();
@@ -66,7 +70,7 @@ fn docs()
   let temp = arrange( "single_module" );
 
   // Act
-  _ = action::readme_modules_headers_renew( AbsolutePath::try_from( temp.path() ).unwrap() ).unwrap();
+  _ = action::readme_modules_headers_renew( CrateDir::try_from( temp.path() ).unwrap() ).unwrap();
   let mut file = std::fs::File::open( temp.path().join( "test_module" ).join( "Readme.md" ) ).unwrap();
 
   let mut actual = String::new();
@@ -84,7 +88,7 @@ fn no_gitpod()
   let temp = arrange("single_module");
 
   // Act
-  _ = action::readme_modules_headers_renew(AbsolutePath::try_from(temp.path()).unwrap()).unwrap();
+  _ = action::readme_modules_headers_renew( CrateDir::try_from( temp.path() ).unwrap() ).unwrap();
   let mut file = std::fs::File::open(temp.path().join("test_module").join("Readme.md")).unwrap();
 
   let mut actual = String::new();
@@ -101,7 +105,7 @@ fn with_gitpod()
   let temp = arrange( "single_module_with_example" );
 
   // Act
-  _ = action::readme_modules_headers_renew( AbsolutePath::try_from( temp.path() ).unwrap() ).unwrap();
+  _ = action::readme_modules_headers_renew( CrateDir::try_from( temp.path() ).unwrap() ).unwrap();
   let mut file = std::fs::File::open( temp.path().join( "module" ).join( "test_module" ).join( "Readme.md" ) ).unwrap();
 
   let mut actual = String::new();
@@ -119,7 +123,7 @@ fn discord()
   let temp = arrange( "single_module" );
 
   // Act
-  _ = action::readme_modules_headers_renew( AbsolutePath::try_from( temp.path() ).unwrap() ).unwrap();
+  _ = action::readme_modules_headers_renew( CrateDir::try_from( temp.path() ).unwrap() ).unwrap();
   let mut file = std::fs::File::open( temp.path().join( "test_module" ).join( "Readme.md" ) ).unwrap();
 
   let mut actual = String::new();
@@ -137,7 +141,7 @@ fn status()
   let temp = arrange( "single_module" );
 
   // Act
-  _ = action::readme_modules_headers_renew( AbsolutePath::try_from( temp.path() ).unwrap() ).unwrap();
+  _ = action::readme_modules_headers_renew( CrateDir::try_from( temp.path() ).unwrap() ).unwrap();
   let mut file = std::fs::File::open( temp.path().join( "test_module" ).join( "Readme.md" ) ).unwrap();
 
   let mut actual = String::new();
@@ -155,13 +159,13 @@ fn idempotency()
   let temp = arrange( "single_module" );
 
   // Act
-  _ = action::readme_modules_headers_renew( AbsolutePath::try_from( temp.path() ).unwrap() ).unwrap();
+  _ = action::readme_modules_headers_renew( CrateDir::try_from( temp.path() ).unwrap() ).unwrap();
   let mut file = std::fs::File::open( temp.path().join( "test_module" ).join( "Readme.md" ) ).unwrap();
   let mut actual1 = String::new();
   _ = file.read_to_string( &mut actual1 ).unwrap();
   drop( file );
 
-  _ = action::readme_modules_headers_renew( AbsolutePath::try_from( temp.path() ).unwrap() ).unwrap();
+  _ = action::readme_modules_headers_renew( CrateDir::try_from( temp.path() ).unwrap() ).unwrap();
   let mut file = std::fs::File::open( temp.path().join( "test_module" ).join( "Readme.md" ) ).unwrap();
   let mut actual2 = String::new();
   _ = file.read_to_string( &mut actual2 ).unwrap();
@@ -176,7 +180,7 @@ fn with_many_members_and_varius_config()
 {
   let temp = arrange( "three_packages" );
 
-  _ = action::readme_modules_headers_renew( AbsolutePath::try_from( temp.path() ).unwrap() ).unwrap();
+  _ = action::readme_modules_headers_renew( CrateDir::try_from( temp.path() ).unwrap() ).unwrap();
 
   let mut file_b = std::fs::File::open( temp.path().join( "b" ).join( "Readme.md" ) ).unwrap();
   let mut file_c = std::fs::File::open( temp.path().join( "c" ).join( "Readme.md" ) ).unwrap();
@@ -203,5 +207,5 @@ fn without_needed_config()
   let temp = arrange( "variadic_tag_configurations" );
 
   // Act
-  _ = action::readme_modules_headers_renew( AbsolutePath::try_from( temp.path() ).unwrap() ).unwrap();
+  _ = action::readme_modules_headers_renew( CrateDir::try_from( temp.path() ).unwrap() ).unwrap();
 }
diff --git a/module/move/willbe/tests/inc/action/test.rs b/module/move/willbe/tests/inc/action_tests/test.rs
similarity index 68%
rename from module/move/willbe/tests/inc/action/test.rs
rename to module/move/willbe/tests/inc/action_tests/test.rs
index 1233017b05..6d7d7898d9 100644
--- a/module/move/willbe/tests/inc/action/test.rs
+++ b/module/move/willbe/tests/inc/action_tests/test.rs
@@ -1,14 +1,26 @@
-use std::collections::BTreeSet;
-use std::fs::{self, File };
-use std::io::Write;
-use std::path::{ Path, PathBuf };
+use super::*;
+use the_module::*;
+
+use inc::helper::
+{
+  ProjectBuilder,
+  WorkspaceBuilder,
+  // BINARY_NAME,
+};
+
+use collection::BTreeSet;
+// use std::
+// {
+//   fs::{ self, File },
+//   io::Write,
+// };
+// use path::{ Path, PathBuf };
 use assert_fs::TempDir;
 
-use crate::the_module::*;
-use action::test::{test, TestsCommandOptions};
-use _path::AbsolutePath;
+use action::test::{ test, TestsCommandOptions };
 use channel::*;
 use optimization::*;
+// qqq : for Petro : no astersisks import
 use willbe::test::TestVariant;
 
 #[ test ]
@@ -218,109 +230,3 @@ fn backtrace_should_be()
   assert!( !no_features.clone().unwrap_err().out.contains( "RUST_BACKTRACE" ) );
   assert!( no_features.clone().unwrap_err().out.contains( "stack backtrace" ) );
 }
-
-#[ derive( Debug ) ]
-pub struct ProjectBuilder
-{
-  name : String,
-  lib_content : Option< String >,
-  test_content : Option< String >,
-  toml_content : Option< String >,
-}
-
-impl ProjectBuilder
-{
-  pub fn new( name : &str ) -> Self
-  {
-    Self
-    {
-      name : String::from( name ),
-      lib_content : None,
-      test_content : None,
-      toml_content : None,
-    }
-  }
-
-  pub fn lib_file< S : Into< String > >( mut self, content : S ) -> Self
-  {
-    self.lib_content = Some( content.into() );
-    self
-  }
-
-  pub fn test_file< S : Into< String > >( mut self, content : S ) -> Self
-  {
-    self.test_content = Some( content.into() );
-    self
-  }
-
-  pub fn toml_file( mut self, content : &str ) -> Self
-  {
-    self.toml_content = Some( format!( "[package]\nname = \"{}\"\nversion = \"0.1.0\"\nedition = \"2021\"\n{}", self.name, content ) );
-    self
-  }
-
-  pub fn build< P : AsRef< Path > >( &self, path : P ) -> std::io::Result< PathBuf >
-  {
-    let project_path = path.as_ref();
-
-    fs::create_dir_all( project_path.join( "src" ) )?;
-    fs::create_dir_all( project_path.join( "tests" ) )?;
-
-    if let Some( content ) = &self.toml_content
-    {
-      let mut file = File::create( project_path.join( "Cargo.toml" ) )?;
-      write!( file, "{}", content )?;
-    }
-
-    let mut file = File::create( project_path.join( "src/lib.rs" ) )?;
-    if let Some( content ) = &self.lib_content
-    {
-      write!( file, "{}", content )?;
-    }
-
-    if let Some( content ) = &self.test_content
-    {
-      let mut file = File::create( project_path.join( "tests/tests.rs" ) )?;
-      write!( file, "{}", content )?;
-    }
-
-    Ok( project_path.to_path_buf() )
-  }
-}
-
-struct WorkspaceBuilder
-{
-  members : Vec< ProjectBuilder >,
-  toml_content : String,
-}
-
-impl WorkspaceBuilder
-{
-  fn new() -> Self
-  {
-    Self
-    {
-      members : vec![],
-      toml_content : "[workspace]\nresolver = \"2\"\nmembers = [\n    \"modules/*\",\n]\n".to_string(),
-    }
-  }
-
-  fn member( mut self, project : ProjectBuilder ) -> Self
-  {
-    self.members.push( project );
-    self
-  }
-
-  fn build<  P : AsRef< Path > >( self, path : P ) -> PathBuf
-  {
-    let project_path = path.as_ref();
-    fs::create_dir_all( project_path.join( "modules" ) ).unwrap();
-    let mut file = File::create( project_path.join( "Cargo.toml" ) ).unwrap();
-    write!( file, "{}", self.toml_content ).unwrap();
-    for member in self.members
-    {
-      member.build( project_path.join( "modules" ).join( &member.name ) ).unwrap();
-    }
-    project_path.into()
-  }
-}
diff --git a/module/move/willbe/tests/inc/action/workspace_renew.rs b/module/move/willbe/tests/inc/action_tests/workspace_renew.rs
similarity index 100%
rename from module/move/willbe/tests/inc/action/workspace_renew.rs
rename to module/move/willbe/tests/inc/action_tests/workspace_renew.rs
diff --git a/module/move/willbe/tests/inc/command/tests_run.rs b/module/move/willbe/tests/inc/command/tests_run.rs
index c540c285d5..67f6b97c9c 100644
--- a/module/move/willbe/tests/inc/command/tests_run.rs
+++ b/module/move/willbe/tests/inc/command/tests_run.rs
@@ -1,12 +1,11 @@
 use super::*;
+
 // use the_module::*;
 use assert_cmd::Command;
-use inc::
+use inc::helper::
 {
-  action::test::ProjectBuilder,
-  // aaa : for Petro : move to helper. don't reuse test-rs files in command and endpoints
-  // aaa : move to helper module
-  helpers::BINARY_NAME,
+  ProjectBuilder,
+  BINARY_NAME,
 };
 
 use assert_fs::TempDir;
diff --git a/module/move/willbe/tests/inc/entity/dependencies.rs b/module/move/willbe/tests/inc/entity/dependencies.rs
index 28f393d4f5..bf6e0eca94 100644
--- a/module/move/willbe/tests/inc/entity/dependencies.rs
+++ b/module/move/willbe/tests/inc/entity/dependencies.rs
@@ -2,29 +2,32 @@ use super::*;
 
 use assert_fs::prelude::*;
 use assert_fs::TempDir;
-use the_module::Workspace;
-use the_module::package::{ dependencies, DependenciesOptions, DependenciesSort };
-use willbe::CrateDir;
-use willbe::package::Package;
-use willbe::_path::AbsolutePath;
+use the_module::
+{
+  Workspace,
+  dependency::{ self, DependenciesOptions, DependenciesSort },
+  CrateDir,
+  package::Package,
+  path::AbsolutePath,
+};
 
 //
 
 fn arrange( asset_name : &str ) -> ( TempDir, Workspace )
 {
-  let path = CrateDir::try_from( AbsolutePath::try_from( std::path::Path::new( env!( "CARGO_MANIFEST_DIR" ) ) ).unwrap() ).unwrap();
-  let mut metadata = Workspace::with_crate_dir( path ).unwrap();
+  let path = CrateDir::try_from( std::path::Path::new( env!( "CARGO_MANIFEST_DIR" ) ) ).unwrap();
+  let workspace = Workspace::try_from( path ).unwrap();
 
-  let root_path = metadata.load().unwrap().workspace_root().unwrap();
+  let root_path = workspace.workspace_root();
   let assets_relative_path = std::path::Path::new( ASSET_PATH );
   let assets_path = root_path.join( "module" ).join( "move" ).join( "willbe" ).join( assets_relative_path );
   let temp = TempDir::new().unwrap();
   temp.copy_from( assets_path.join( asset_name ), &[ "**" ] ).unwrap();
 
   let temp_crate_dir = CrateDir::try_from( AbsolutePath::try_from( temp.to_path_buf() ).unwrap() ).unwrap();
-  let metadata = Workspace::with_crate_dir( temp_crate_dir ).unwrap();
+  let workspace = Workspace::try_from( temp_crate_dir ).unwrap();
 
-  ( temp, metadata )
+  ( temp, workspace )
 }
 
 // a -> b -> c
@@ -32,26 +35,36 @@ fn arrange( asset_name : &str ) -> ( TempDir, Workspace )
 fn chain_of_three_packages()
 {
   // Arrange
-  let ( temp, mut metadata ) = arrange( "chain_of_packages" );
+  let ( temp, mut workspace ) = arrange( "chain_of_packages" );
 
-  let a = Package::try_from( AbsolutePath::try_from( temp.join( "a" ) ).unwrap() ).unwrap();
-  let b = Package::try_from( AbsolutePath::try_from( temp.join( "b" ) ).unwrap() ).unwrap();
-  let c = Package::try_from( AbsolutePath::try_from( temp.join( "c" ) ).unwrap() ).unwrap();
+  let a = Package::try_from( willbe::CrateDir::try_from( temp.join( "a" ) ).unwrap() ).unwrap();
+  let b = Package::try_from( willbe::CrateDir::try_from( temp.join( "b" ) ).unwrap() ).unwrap();
+  let c = Package::try_from( willbe::CrateDir::try_from( temp.join( "c" ) ).unwrap() ).unwrap();
 
   // Act
-  let output = dependencies( &mut metadata, &a, DependenciesOptions::default() ).unwrap();
-  let output : Vec< _ > = output.iter().filter_map( | o | o.path.as_ref() ).map( | x | x.as_ref() ).collect();
+  let output = dependency::list( &mut workspace, &a, DependenciesOptions::default() ).unwrap();
+  let output : Vec< CrateDir > = output
+  .into_iter()
+  .filter_map( | p | p.crate_dir )
+  .collect();
 
   // Assert
   assert_eq!( 2, output.len() );
-  assert!( ( c.crate_dir().as_ref() == output[ 0 ] && b.crate_dir().as_ref() == output[ 1 ] ) || ( c.crate_dir().as_ref() == output[ 1 ] && b.crate_dir().as_ref() == output[ 0 ] ) );
-
-  let output = dependencies( &mut metadata, &b, DependenciesOptions::default() ).unwrap();
-  let output : Vec< _ > = output.iter().filter_map( | o | o.path.as_ref() ).map( | x | x.as_ref() ).collect();
+  assert!
+  (
+    ( c.crate_dir() == output[ 0 ] && b.crate_dir() == output[ 1 ] ) ||
+    ( c.crate_dir() == output[ 1 ] && b.crate_dir() == output[ 0 ] ),
+  );
+
+  let output = dependency::list( &mut workspace, &b, DependenciesOptions::default() ).unwrap();
+  let output : Vec< CrateDir > = output
+  .into_iter()
+  .filter_map( | p | p.crate_dir )
+  .collect();
   assert_eq!( 1, output.len() );
-  assert_eq!( c.crate_dir().as_ref(), output[ 0 ] );
+  assert_eq!( c.crate_dir(), output[ 0 ] );
 
-  let output = dependencies( &mut metadata, &c, DependenciesOptions::default() ).unwrap();
+  let output = dependency::list( &mut workspace, &c, DependenciesOptions::default() ).unwrap();
   assert!( output.is_empty() );
 }
 
@@ -60,24 +73,35 @@ fn chain_of_three_packages()
 fn chain_of_three_packages_topologically_sorted()
 {
   // Arrange
-  let ( temp, mut metadata ) = arrange( "chain_of_packages" );
+  let ( temp, mut workspace ) = arrange( "chain_of_packages" );
 
-  let a = Package::try_from( AbsolutePath::try_from( temp.join( "a" ) ).unwrap() ).unwrap();
-  let b = Package::try_from( AbsolutePath::try_from( temp.join( "b" ) ).unwrap() ).unwrap();
-  let c = Package::try_from( AbsolutePath::try_from( temp.join( "c" ) ).unwrap() ).unwrap();
+  let a = Package::try_from( willbe::CrateDir::try_from( temp.join( "a" ) ).unwrap() ).unwrap();
+  let b = Package::try_from( willbe::CrateDir::try_from( temp.join( "b" ) ).unwrap() ).unwrap();
+  let c = Package::try_from( willbe::CrateDir::try_from( temp.join( "c" ) ).unwrap() ).unwrap();
 
   // Act
-  let output = dependencies( &mut metadata, &a, DependenciesOptions { sort : DependenciesSort::Topological, ..Default::default() } ).unwrap();
-  let output : Vec< _ > = output.iter().filter_map( | o | o.path.as_ref() ).map( | x | x.as_ref() ).collect();
+  let output = dependency::list
+  (
+    &mut workspace,
+    &a,
+    DependenciesOptions { sort : DependenciesSort::Topological, ..Default::default() },
+  ).unwrap();
+  let output : Vec< CrateDir > = output
+  .into_iter()
+  .filter_map( | p | p.crate_dir )
+  .collect();
 
   // Assert
-   assert_eq!( &[ c.crate_dir().as_ref(), b.crate_dir().as_ref() ], output.as_slice() );
+   assert_eq!( &[ c.crate_dir(), b.crate_dir() ], output.as_slice() );
 
-  let output = dependencies( &mut metadata, &b, DependenciesOptions { sort : DependenciesSort::Topological, ..Default::default() } ).unwrap();
-  let output : Vec< _ > = output.iter().filter_map( | o | o.path.as_ref() ).map( | x | x.as_ref() ).collect();
-   assert_eq!( &[ c.crate_dir().as_ref() ], output.as_slice() );
+  let output = dependency::list( &mut workspace, &b, DependenciesOptions { sort : DependenciesSort::Topological, ..Default::default() } ).unwrap();
+  let output : Vec< CrateDir > = output
+  .into_iter()
+  .filter_map( | p | p.crate_dir )
+  .collect();
+  assert_eq!( &[ c.crate_dir() ], output.as_slice() );
 
-  let output = dependencies( &mut metadata, &c, DependenciesOptions { sort : DependenciesSort::Topological, ..Default::default() } ).unwrap();
+  let output = dependency::list( &mut workspace, &c, DependenciesOptions { sort : DependenciesSort::Topological, ..Default::default() } ).unwrap();
   assert!( output.is_empty() );
 }
 
@@ -86,18 +110,21 @@ fn chain_of_three_packages_topologically_sorted()
 fn package_with_remote_dependency()
 {
   // Arrange
-  let ( temp, mut metadata ) = arrange( "package_with_remote_dependency" );
+  let ( temp, mut workspace ) = arrange( "package_with_remote_dependency" );
 
-  let a = Package::try_from( AbsolutePath::try_from( temp.join( "a" ) ).unwrap() ).unwrap();
-  let b = Package::try_from( AbsolutePath::try_from( temp.join( "b" ) ).unwrap() ).unwrap();
+  let a = Package::try_from( willbe::CrateDir::try_from( temp.join( "a" ) ).unwrap() ).unwrap();
+  let b = Package::try_from( willbe::CrateDir::try_from( temp.join( "b" ) ).unwrap() ).unwrap();
 
   // Act
-  let output = dependencies( &mut metadata, &a, DependenciesOptions::default() ).unwrap();
-  let output : Vec< _ > = output.iter().filter_map( | o | o.path.as_ref() ).map( | x | x.as_ref() ).collect();
+  let output = dependency::list( &mut workspace, &a, DependenciesOptions::default() ).unwrap();
+  let output : Vec< CrateDir > = output
+  .into_iter()
+  .filter_map( | p | p.crate_dir )
+  .collect();
 
   // Assert
   assert_eq!( 1, output.len() );
-  assert_eq!( b.crate_dir().as_ref(), output[ 0 ] );
+  assert_eq!( b.crate_dir(), output[ 0 ] );
 }
 
 // a -> b -> a
@@ -105,24 +132,30 @@ fn package_with_remote_dependency()
 fn workspace_with_cyclic_dependency()
 {
   // Arrange
-  let ( temp, mut metadata ) = arrange( "workspace_with_cyclic_dependency" );
+  let ( temp, mut workspace ) = arrange( "workspace_with_cyclic_dependency" );
 
-  let a = Package::try_from( AbsolutePath::try_from( temp.join( "a" ) ).unwrap() ).unwrap();
-  let b = Package::try_from( AbsolutePath::try_from( temp.join( "b" ) ).unwrap() ).unwrap();
+  let a = Package::try_from( willbe::CrateDir::try_from( temp.join( "a" ) ).unwrap() ).unwrap();
+  let b = Package::try_from( willbe::CrateDir::try_from( temp.join( "b" ) ).unwrap() ).unwrap();
 
   // Act
-  let output = dependencies( &mut metadata, &a, DependenciesOptions::default() ).unwrap();
-  let output : Vec< _ > = output.iter().filter_map( | o | o.path.as_ref() ).map( | x | x.as_ref() ).collect();
+  let output = dependency::list( &mut workspace, &a, DependenciesOptions::default() ).unwrap();
+  let output : Vec< CrateDir > = output
+  .into_iter()
+  .filter_map( | p | p.crate_dir )
+  .collect();
 
   // Assert
   assert_eq!( 1, output.len() );
-  assert!( b.crate_dir().as_ref() == output[ 0 ] );
+  assert!( b.crate_dir() == output[ 0 ] );
 
   // Act
-  let output = dependencies( &mut metadata, &b, DependenciesOptions::default() ).unwrap();
-  let output : Vec< _ > = output.iter().filter_map( | o | o.path.as_ref() ).map( | x | x.as_ref() ).collect();
+  let output = dependency::list( &mut workspace, &b, DependenciesOptions::default() ).unwrap();
+  let output : Vec< CrateDir > = output
+  .into_iter()
+  .filter_map( | p | p.crate_dir )
+  .collect();
 
   // Assert
   assert_eq!( 1, output.len() );
-  assert!( a.crate_dir().as_ref() == output[ 0 ] );
+  assert!( a.crate_dir() == output[ 0 ] );
 }
\ No newline at end of file
diff --git a/module/move/willbe/tests/inc/entity/diff.rs b/module/move/willbe/tests/inc/entity/diff.rs
index b3362ee64d..9c84aa6cc1 100644
--- a/module/move/willbe/tests/inc/entity/diff.rs
+++ b/module/move/willbe/tests/inc/entity/diff.rs
@@ -1,13 +1,12 @@
 use crate::*;
 
+use the_module::*;
 use std::path::{ Path, PathBuf };
 use assert_fs::{ TempDir, prelude::* };
 use crates_tools::CrateArchive;
-use the_module::*;
-use _path::AbsolutePath;
 use package::Package;
 use diff::crate_diff;
-use the_module::version::{ Version, BumpOptions, version_bump };
+use the_module::version::{ Version, BumpOptions, bump };
 
 const TEST_MODULE_PATH : &str = "../../test/";
 
@@ -16,17 +15,17 @@ fn no_changes()
 {
   let tmp = &TempDir::new().unwrap();
   let package_path = package_path( "c" );
-  
+
   let left = prepare( tmp, "left", &package_path );
   let left_crate = crate_file_path( &left );
   let left_archive = CrateArchive::read( &left_crate ).unwrap();
-  
+
   let right = prepare( tmp, "right", &package_path );
   let right_crate = crate_file_path( &right );
   let right_archive = CrateArchive::read( &right_crate ).unwrap();
-  
+
   let has_changes = crate_diff( &left_archive, &right_archive ).exclude( diff::PUBLISH_IGNORE_LIST ).has_changes();
-  
+
   assert!( !has_changes );
 }
 
@@ -47,7 +46,8 @@ fn with_changes()
   {
     let right = prepare( tmp, "right", &package_path );
 
-    let absolute = AbsolutePath::try_from( right.as_path() ).unwrap();
+    // let absolute = AbsolutePath::try_from( right.as_path() ).unwrap();
+    let absolute = CrateDir::try_from( right.as_path() ).unwrap();
     let right_package = Package::try_from( absolute ).unwrap();
     let right_version = Version::try_from( &right_package.version().unwrap() ).unwrap();
 
@@ -59,7 +59,7 @@ fn with_changes()
       dependencies : vec![],
       dry : false,
     };
-    version_bump( bump_options ).unwrap();
+    bump( bump_options ).unwrap();
 
     let right_crate = crate_file_path( &right );
     CrateArchive::read( &right_crate ).unwrap()
@@ -89,10 +89,11 @@ fn crate_file_path( manifest_dir_path : &Path ) -> PathBuf
 {
   _ = cargo::pack( cargo::PackOptions::former().path( manifest_dir_path ).dry( false ).form() ).expect( "Failed to package a package" );
 
-  let absolute = AbsolutePath::try_from( manifest_dir_path ).unwrap();
+  let absolute = CrateDir::try_from( manifest_dir_path ).unwrap();
   let package = Package::try_from( absolute ).unwrap();
   manifest_dir_path
-    .join( "target" )
-    .join( "package" )
-    .join( format!( "{}-{}.crate", package.name().unwrap(), package.version().unwrap() ) )
+  .join( "target" )
+  .join( "package" )
+  .join( format!( "{}-{}.crate", package.name().unwrap(), package.version().unwrap() ) )
+
 }
diff --git a/module/move/willbe/tests/inc/entity/features.rs b/module/move/willbe/tests/inc/entity/features.rs
index 0eaf8e7c75..14cd845879 100644
--- a/module/move/willbe/tests/inc/entity/features.rs
+++ b/module/move/willbe/tests/inc/entity/features.rs
@@ -1,15 +1,15 @@
 use super::*;
 
-// use the_module::*;
-use the_module::features::features_powerset;
-
-use std::collections::HashMap;
+use the_module::
+{
+  features::{ features_powerset, estimate_with },
+  collection::HashMap,
+};
 use serde::Deserialize;
-use the_module::workspace::WorkspacePackage;
-use willbe::features::estimate_with;
 
 /// Constructs a mock `Package` with specified features for testing.
-fn mock_package( features : Vec< ( &str, Vec< &str > ) > ) -> WorkspacePackage
+// fn mock_package( features : Vec< ( &str, Vec< &str > ) > ) -> WorkspacePackageRef< '_ >
+fn mock_package( features : Vec< ( &str, Vec< &str > ) > ) -> cargo_metadata::Package
 {
   let mut features_map : HashMap< String, Vec< _ > > = HashMap::new();
   for ( feature, deps ) in features
@@ -34,7 +34,7 @@ fn mock_package( features : Vec< ( &str, Vec< &str > ) > ) -> WorkspacePackage
     }
   );
 
-  WorkspacePackage::deserialize( json ).unwrap()
+  cargo_metadata::Package::deserialize( json ).unwrap()
 }
 
 #[ test ]
@@ -57,7 +57,7 @@ fn case_1()
   let enabled_features = vec![ "f2".to_string() ];
   let result = features_powerset
   (
-    &package,
+    ( &package ).into(),
     power,
     &exclude_features,
     &include_features,
@@ -93,7 +93,7 @@ fn case_2()
   let enabled_features = vec![ "f2".to_string() ];
   let result = features_powerset
   (
-    &package,
+    ( &package ).into(),
     power,
     &exclude_features,
     &include_features,
@@ -130,7 +130,7 @@ fn case_3()
   let enabled_features = vec![ "f2".to_string() ];
   let result = features_powerset
   (
-    &package,
+    ( &package ).into(),
     power,
     &exclude_features,
     &include_features,
@@ -167,7 +167,7 @@ fn case_4()
   let enabled_features = vec![ "f2".to_string() ];
   let result = features_powerset
   (
-    &package,
+    ( &package ).into(),
     power,
     &exclude_features,
     &include_features,
@@ -205,7 +205,7 @@ fn case_5()
   let enabled_features = vec![ "f2".to_string() ];
   let result = features_powerset
   (
-    &package,
+    ( &package ).into(),
     power,
     &exclude_features,
     &include_features,
@@ -240,7 +240,7 @@ fn case_6()
   let enabled_features = vec![ "f2".to_string() ];
   let result = features_powerset
   (
-    &package,
+    ( &package ).into(),
     power,
     &exclude_features,
     &include_features,
diff --git a/module/move/willbe/tests/inc/entity/version.rs b/module/move/willbe/tests/inc/entity/version.rs
index 6ae36602ce..3251fce27c 100644
--- a/module/move/willbe/tests/inc/entity/version.rs
+++ b/module/move/willbe/tests/inc/entity/version.rs
@@ -9,9 +9,9 @@ use the_module::
   CrateDir,
   Manifest,
   version::Version,
-  _path::AbsolutePath,
+  path::AbsolutePath,
   package::Package,
-  version::{ BumpOptions, version_bump, version_revert },
+  version::{ BumpOptions, bump, revert },
 };
 
 const TEST_MODULE_PATH : &str = "../../test/";
@@ -110,14 +110,15 @@ fn package_version_bump()
   std::fs::create_dir( &temp_module ).unwrap();
   temp_module.child( "c" ).copy_from( &c, &[ "**" ] ).unwrap();
   let c_temp_path = temp_module.join( "c" );
-  let c_temp_absolute_path = AbsolutePath::try_from( c_temp_path ).unwrap();
+  let c_temp_absolute_path = CrateDir::try_from( c_temp_path ).unwrap();
   let c_temp_crate_dir = CrateDir::try_from( c_temp_absolute_path.clone() ).unwrap();
-  let c_package = Package::try_from( c_temp_absolute_path.clone() ).unwrap();
+  let c_package = Package::try_from( c_temp_crate_dir.clone() ).unwrap();
   let version = c_package.version().unwrap();
 
   let root_manifest_path =  temp.join( "Cargo.toml" );
   let mut cargo_toml = std::fs::File::create( &root_manifest_path ).unwrap();
-  let root_manifest_absolute_path = AbsolutePath::try_from( root_manifest_path.as_path() ).unwrap();
+  // let root_manifest_absolute_path = AbsolutePath::try_from( root_manifest_path.as_path() ).unwrap();
+  let root_manifest_dir_absolute_path = CrateDir::try_from( root_manifest_path.as_path().parent().unwrap() ).unwrap();
   write!( cargo_toml, r#"
 [workspace]
 resolver = "2"
@@ -131,17 +132,17 @@ default-features = true
 "# ).unwrap();
   let version = Version::try_from( &version ).unwrap();
   let bumped_version = version.clone().bump();
-  
+
   // Act
   let options = BumpOptions
   {
-    crate_dir : c_temp_crate_dir,
+    crate_dir : c_temp_crate_dir.clone(),
     old_version : version.clone(),
     new_version : bumped_version.clone(),
-    dependencies : vec![ CrateDir::try_from( root_manifest_absolute_path.parent().unwrap() ).unwrap() ],
+    dependencies : vec![ root_manifest_dir_absolute_path.clone() ],
     dry : false,
   };
-  let bump_report = version_bump( options ).unwrap();
+  let bump_report = bump( options ).unwrap();
 
   // Assert
   assert_eq!( Some( version.to_string() ), bump_report.old_version );
@@ -149,7 +150,8 @@ default-features = true
   assert_eq!
   (
     {
-      let mut v = vec![ root_manifest_absolute_path.clone(), c_temp_absolute_path.join( "Cargo.toml" ) ];
+      // let mut v = vec![ root_manifest_absolute_path.clone(), c_temp_absolute_path.join( "Cargo.toml" ) ];
+      let mut v = vec![ root_manifest_dir_absolute_path.clone().manifest_file(), c_temp_absolute_path.manifest_file() ];
       v.sort();
       v
     },
@@ -159,11 +161,11 @@ default-features = true
       v
     }
   );
-  let c_package = Package::try_from( c_temp_absolute_path.clone() ).unwrap();
+  let c_package = Package::try_from( c_temp_crate_dir.clone() ).unwrap();
   let name = c_package.name().unwrap();
   assert_eq!( bumped_version.to_string(), c_package.version().unwrap() );
-  let mut root_manifest = Manifest::try_from( root_manifest_absolute_path ).unwrap();
-  root_manifest.load().unwrap();
+  let mut root_manifest = Manifest::try_from( root_manifest_dir_absolute_path ).unwrap();
+  // root_manifest.load().unwrap();
   let data = root_manifest.data();
   let current_version_item = data.get( "workspace" ).and_then( | w | w.get( "dependencies" ) ).and_then( | d | d.get( &name ) ).and_then( | p | p.get( "version" ) ).unwrap();
   let current_version = current_version_item.as_str().unwrap();
@@ -182,12 +184,12 @@ fn package_version_bump_revert()
   let c_temp_path = temp_module.join( "c" );
   let c_temp_absolute_path = AbsolutePath::try_from( c_temp_path ).unwrap();
   let c_temp_crate_dir = CrateDir::try_from( c_temp_absolute_path.clone() ).unwrap();
-  let c_package = Package::try_from( c_temp_absolute_path.clone() ).unwrap();
+  let c_package = Package::try_from( c_temp_crate_dir.clone() ).unwrap();
   let version = c_package.version().unwrap();
 
   let root_manifest_path =  temp.join( "Cargo.toml" );
   let mut cargo_toml = std::fs::File::create( &root_manifest_path ).unwrap();
-  let root_manifest_absolute_path = AbsolutePath::try_from( root_manifest_path.as_path() ).unwrap();
+  let root_manifest_dir_absolute_path = CrateDir::try_from( root_manifest_path.as_path().parent().unwrap() ).unwrap();
   write!( cargo_toml, r#"
 [workspace]
 resolver = "2"
@@ -205,21 +207,21 @@ default-features = true
   // Act
   let options = BumpOptions
   {
-    crate_dir : c_temp_crate_dir,
+    crate_dir : c_temp_crate_dir.clone(),
     old_version : version.clone(),
     new_version : bumped_version.clone(),
-    dependencies : vec![ CrateDir::try_from( root_manifest_absolute_path.parent().unwrap() ).unwrap() ],
+    dependencies : vec![ root_manifest_dir_absolute_path.clone() ],
     dry : false,
   };
-  let bump_report = version_bump( options ).unwrap();
-  version_revert( &bump_report ).unwrap();
+  let bump_report = bump( options ).unwrap();
+  revert( &bump_report ).unwrap();
 
   // Assert
-  let c_package = Package::try_from( c_temp_absolute_path.clone() ).unwrap();
+  let c_package = Package::try_from( c_temp_crate_dir.clone() ).unwrap();
   let name = c_package.name().unwrap();
   assert_eq!( version.to_string(), c_package.version().unwrap() );
-  let mut root_manifest = Manifest::try_from( root_manifest_absolute_path ).unwrap();
-  root_manifest.load().unwrap();
+  let mut root_manifest = Manifest::try_from( root_manifest_dir_absolute_path ).unwrap();
+  // root_manifest.load().unwrap();
   let data = root_manifest.data();
   let current_version_item = data.get( "workspace" ).and_then( | w | w.get( "dependencies" ) ).and_then( | d | d.get( &name ) ).and_then( | p | p.get( "version" ) ).unwrap();
   let current_version = current_version_item.as_str().unwrap();
diff --git a/module/move/willbe/tests/inc/helper.rs b/module/move/willbe/tests/inc/helper.rs
new file mode 100644
index 0000000000..2efa341f9d
--- /dev/null
+++ b/module/move/willbe/tests/inc/helper.rs
@@ -0,0 +1,116 @@
+use super::*;
+use the_module::*;
+use path::{ Path, PathBuf };
+use std::
+{
+  fs::{ self, File },
+  io::Write,
+};
+
+pub const BINARY_NAME : &'static str = "will";
+
+#[ derive( Debug ) ]
+pub struct ProjectBuilder
+{
+  name : String,
+  lib_content : Option< String >,
+  test_content : Option< String >,
+  toml_content : Option< String >,
+}
+
+impl ProjectBuilder
+{
+  pub fn new( name : &str ) -> Self
+  {
+    Self
+    {
+      name : String::from( name ),
+      lib_content : None,
+      test_content : None,
+      toml_content : None,
+    }
+  }
+
+  pub fn lib_file< S : Into< String > >( mut self, content : S ) -> Self
+  {
+    self.lib_content = Some( content.into() );
+    self
+  }
+
+  pub fn test_file< S : Into< String > >( mut self, content : S ) -> Self
+  {
+    self.test_content = Some( content.into() );
+    self
+  }
+
+  pub fn toml_file( mut self, content : &str ) -> Self
+  {
+    self.toml_content = Some( format!( "[package]\nname = \"{}\"\nversion = \"0.1.0\"\nedition = \"2021\"\n{}", self.name, content ) );
+    self
+  }
+
+  pub fn build< P : AsRef< Path > >( &self, path : P ) -> std::io::Result< PathBuf >
+  {
+    let project_path = path.as_ref();
+
+    fs::create_dir_all( project_path.join( "src" ) )?;
+    fs::create_dir_all( project_path.join( "tests" ) )?;
+
+    if let Some( content ) = &self.toml_content
+    {
+      let mut file = File::create( project_path.join( "Cargo.toml" ) )?;
+      write!( file, "{}", content )?;
+    }
+
+    let mut file = File::create( project_path.join( "src/lib.rs" ) )?;
+    if let Some( content ) = &self.lib_content
+    {
+      write!( file, "{}", content )?;
+    }
+
+    if let Some( content ) = &self.test_content
+    {
+      let mut file = File::create( project_path.join( "tests/tests.rs" ) )?;
+      write!( file, "{}", content )?;
+    }
+
+    Ok( project_path.to_path_buf() )
+  }
+}
+
+pub struct WorkspaceBuilder
+{
+  pub members : Vec< ProjectBuilder >,
+  pub toml_content : String,
+}
+
+impl WorkspaceBuilder
+{
+  pub fn new() -> Self
+  {
+    Self
+    {
+      members : vec![],
+      toml_content : "[workspace]\nresolver = \"2\"\nmembers = [\n    \"modules/*\",\n]\n".to_string(),
+    }
+  }
+
+  pub fn member( mut self, project : ProjectBuilder ) -> Self
+  {
+    self.members.push( project );
+    self
+  }
+
+  pub fn build<  P : AsRef< Path > >( self, path : P ) -> PathBuf
+  {
+    let project_path = path.as_ref();
+    fs::create_dir_all( project_path.join( "modules" ) ).unwrap();
+    let mut file = File::create( project_path.join( "Cargo.toml" ) ).unwrap();
+    write!( file, "{}", self.toml_content ).unwrap();
+    for member in self.members
+    {
+      member.build( project_path.join( "modules" ).join( &member.name ) ).unwrap();
+    }
+    project_path.into()
+  }
+}
diff --git a/module/move/willbe/tests/inc/helpers.rs b/module/move/willbe/tests/inc/helpers.rs
deleted file mode 100644
index c2c1ded1d5..0000000000
--- a/module/move/willbe/tests/inc/helpers.rs
+++ /dev/null
@@ -1 +0,0 @@
-pub const BINARY_NAME : &'static str = "will";
diff --git a/module/move/willbe/tests/inc/mod.rs b/module/move/willbe/tests/inc/mod.rs
index b7a5680237..ca9dbda05d 100644
--- a/module/move/willbe/tests/inc/mod.rs
+++ b/module/move/willbe/tests/inc/mod.rs
@@ -1,10 +1,22 @@
 use super::*;
 
-mod action;
-mod package;
-mod command;
+/// Entities of which spaces consists of.
 mod entity;
+
+/// Genera-purpose tools which might be moved out one day.
 mod tool;
-mod helpers;
 
-// qqq : for Petro : for Bohdan : sort out test files to be consistent with src files
+/// Describes CLI commands.
+mod command;
+
+/// Describes functions that can be called from an interface.
+mod action_tests;
+
+mod helper;
+
+// aaa : for Petro : for Bohdan : for Nikita : sort out test files to be consistent with src files
+// sorted
+
+// qqq : for Mykyta: to avoid names collisions add postfix _test for all dirs and files in dir `inc`
+// query.rs -> query_test.rs
+
diff --git a/module/move/willbe/tests/inc/package.rs b/module/move/willbe/tests/inc/package.rs
index 935069b5e6..8a5fb2a2f0 100644
--- a/module/move/willbe/tests/inc/package.rs
+++ b/module/move/willbe/tests/inc/package.rs
@@ -2,11 +2,11 @@
 // use the_module::
 // {
 //   Workspace,
-//   _path::AbsolutePath,
+//   path::AbsolutePath,
 //   package::PublishPlan,
 // };
 // use willbe::package::perform_packages_publish;
-// 
+//
 // #[ test ]
 // fn plan_publish_many_packages()
 // {
@@ -27,7 +27,7 @@
 // //       ),
 // //       dry: true,
 // //     },
-// //     version_bump: BumpOptions {
+// //     bump: BumpOptions {
 // //       crate_dir: CrateDir(
 // //         AbsolutePath(
 // //           ".../wTools/module/move/wca",
@@ -170,3 +170,5 @@
 // // )
 //   panic!()
 // }
+
+// qqq : for Bohdan : fix the test
diff --git a/module/move/willbe/tests/inc/tool/graph.rs b/module/move/willbe/tests/inc/tool/graph.rs
deleted file mode 100644
index 28c08d7b75..0000000000
--- a/module/move/willbe/tests/inc/tool/graph.rs
+++ /dev/null
@@ -1,217 +0,0 @@
-mod toposort
-{
-  use crate::the_module::*;
-  use graph::toposort;
-  use std::collections::HashMap;
-  use petgraph::Graph;
-  use willbe::graph::topological_sort_with_grouping;
-
-  struct IndexMap< T >( HashMap< T, usize > );
-
-  impl< T > IndexMap< T >
-  where
-    T : std::hash::Hash + Eq,
-  {
-    pub fn new( elements : Vec< T > ) -> Self
-    {
-      let index_map = elements.into_iter().enumerate().map( |( index, value )| ( value, index ) ).collect();
-      Self( index_map )
-    }
-
-    pub fn position( &self, element : &T ) -> usize
-    {
-      self.0[ element ]
-    }
-  }
-
-  #[ test ]
-  fn no_dependency()
-  {
-    let mut graph = Graph::new();
-
-    let _node1 = graph.add_node( &"A" );
-    let _node2 = graph.add_node( &"B" );
-
-    let sorted = toposort( graph ).unwrap();
-
-    let index_map = IndexMap::new( sorted );
-    let node1_position = index_map.position( &"A" );
-    let node2_position = index_map.position( &"B" );
-
-    assert!( node1_position < node2_position );
-  }
-
-  #[ test ]
-  fn a_depends_on_b()
-  {
-    let mut graph = Graph::new();
-
-    let node1 = graph.add_node( &"A" );
-    let node2 = graph.add_node( &"B" );
-
-    graph.add_edge( node1, node2, &"" );
-
-    let sorted = toposort( graph ).unwrap();
-
-    let index_map = IndexMap::new( sorted );
-    let node1_position = index_map.position( &"A" );
-    let node2_position = index_map.position( &"B" );
-
-    assert!( node1_position > node2_position );
-  }
-
-  #[ test ]
-  fn multiple_dependencies()
-  {
-    let mut graph = Graph::new();
-
-    let a = graph.add_node( &"A" );
-    let b = graph.add_node( &"B" );
-    let c = graph.add_node( &"C" );
-
-    graph.add_edge( a, b, &"" );
-    graph.add_edge( a, c, &"" );
-
-    let sorted = toposort( graph ).unwrap();
-
-    let index_map = IndexMap::new( sorted );
-    let a_position = index_map.position( &"A" );
-    let b_position = index_map.position( &"B" );
-    let c_position = index_map.position( &"C" );
-
-    assert!( a_position > b_position );
-    assert!( a_position > c_position );
-  }
-
-  #[ test ]
-  fn transitive_dependencies()
-  {
-    let mut graph = Graph::new();
-
-    let a = graph.add_node( &"A" );
-    let b = graph.add_node( &"B" );
-    let c = graph.add_node( &"C" );
-
-    graph.add_edge( a, b, &"" );
-    graph.add_edge( b, c, &"" );
-
-    let sorted = toposort( graph ).unwrap();
-
-    let index_map = IndexMap::new( sorted );
-    let a_position = index_map.position( &"A" );
-    let b_position = index_map.position( &"B" );
-    let c_position = index_map.position( &"C" );
-
-    assert!( a_position > b_position );
-    assert!( b_position > c_position );
-  }
-
-  #[ test ]
-  #[ should_panic( expected = "Cycle" ) ]
-  fn cycle()
-  {
-    let mut graph = Graph::new();
-
-    let node1 = graph.add_node( &"A" );
-    let node2 = graph.add_node( &"B" );
-
-    graph.add_edge( node1, node2, &"" );
-    graph.add_edge( node2, node1, &"" );
-
-    let _sorted = toposort( graph ).unwrap();
-  }
-
-  // input
-  // B -> A
-  // C -> A
-  // output
-  // [A], [B,C]
-  #[ test ]
-  fn simple_case()
-  {
-    let mut graph = Graph::new();
-
-    let a_node = graph.add_node( &"A" );
-    let b_node = graph.add_node( &"B" );
-    let c_node = graph.add_node( &"C" );
-
-    graph.add_edge( b_node, a_node, &"B->A");
-    graph.add_edge( c_node, a_node, &"C->A");
-
-    let groups = topological_sort_with_grouping( graph );
-
-    assert_eq!( groups[ 0 ], vec![ "A" ] );
-    assert_eq!( groups[1].len(), 2 );
-    assert!( groups[ 1 ].contains( &"C" ) );
-    assert!( groups[ 1 ].contains( &"B" ) );
-  }
-
-  // input
-  // digraph {
-  //     0 [ label = "0" ]
-  //     1 [ label = "1" ]
-  //     2 [ label = "2" ]
-  //     3 [ label = "3" ]
-  //     4 [ label = "4" ]
-  //     5 [ label = "5" ]
-  //     6 [ label = "6" ]
-  //     7 [ label = "7" ]
-  //     4 -> 0 [ label = "" ]
-  //     5 -> 0 [ label = "" ]
-  //     6 -> 0 [ label = "" ]
-  //     1 -> 3 [ label = "" ]
-  //     2 -> 3 [ label = "" ]
-  //     7 -> 6 [ label = "" ]
-  //     3 -> 4 [ label = "" ]
-  //     3 -> 5 [ label = "" ]
-  //     3 -> 6 [ label = "" ]
-  // }
-  // visualization : https://viz-js.com/?dot=ZGlncmFwaCB7CiAgICAwIFsgbGFiZWwgPSAiMCIgXQogICAgMSBbIGxhYmVsID0gIjEiIF0KICAgIDIgWyBsYWJlbCA9ICIyIiBdCiAgICAzIFsgbGFiZWwgPSAiMyIgXQogICAgNCBbIGxhYmVsID0gIjQiIF0KICAgIDUgWyBsYWJlbCA9ICI1IiBdCiAgICA2IFsgbGFiZWwgPSAiNiIgXQogICAgNyBbIGxhYmVsID0gIjciIF0KICAgIDQgLT4gMCBbIGxhYmVsID0gIiIgXQogICAgNSAtPiAwIFsgbGFiZWwgPSAiIiBdCiAgICA2IC0-IDAgWyBsYWJlbCA9ICIiIF0KICAgIDEgLT4gMyBbIGxhYmVsID0gIiIgXQogICAgMiAtPiAzIFsgbGFiZWwgPSAiIiBdCiAgICA3IC0-IDYgWyBsYWJlbCA9ICIiIF0KICAgIDMgLT4gNCBbIGxhYmVsID0gIiIgXQogICAgMyAtPiA1IFsgbGFiZWwgPSAiIiBdCiAgICAzIC0-IDYgWyBsYWJlbCA9ICIiIF0KfQo~
-  // output
-  // [0], [6,5,4], [3], [1,2,7]
-  #[ test ]
-  fn complicated_test()
-  {
-    let mut graph = Graph::new();
-
-    let n = graph.add_node( &"0" );
-    let n_1 = graph.add_node( &"1" );
-    let n_2 = graph.add_node( &"2" );
-    let n_3 = graph.add_node( &"3" );
-    let n_4 = graph.add_node( &"4" );
-    let n_5 = graph.add_node( &"5" );
-    let n_6 = graph.add_node( &"6" );
-    let n_7 = graph.add_node( &"7" );
-
-    graph.add_edge( n_1, n_3, &"" );
-    graph.add_edge( n_2, n_3, &"" );
-    graph.add_edge( n_7, n_6, &"" );
-
-    graph.add_edge( n_3, n_4, &"" );
-    graph.add_edge( n_3, n_5, &"" );
-    graph.add_edge( n_3, n_6, &"" );
-
-    graph.add_edge( n_4, n, &"" );
-    graph.add_edge( n_5, n, &"" );
-    graph.add_edge( n_6, n, &"" );
-
-    let groups = topological_sort_with_grouping( graph );
-
-    dbg!(&groups);
-
-    assert_eq!( groups[ 0 ], vec![ "0" ] );
-
-    assert_eq!( groups[1].len(), 3 );
-    assert!( groups[ 1 ].contains( &"6" ) );
-    assert!( groups[ 1 ].contains( &"5" ) );
-    assert!( groups[ 1 ].contains( &"4" ) );
-
-    assert_eq!( groups[ 2 ], vec![ "3" ] );
-
-    assert_eq!( groups[3].len(), 3 );
-    assert!( groups[ 3 ].contains( &"1" ) );
-    assert!( groups[ 3 ].contains( &"2" ) );
-    assert!( groups[ 3 ].contains( &"7" ) );
-  }
-
-}
\ No newline at end of file
diff --git a/module/move/willbe/tests/inc/tool/graph_test.rs b/module/move/willbe/tests/inc/tool/graph_test.rs
new file mode 100644
index 0000000000..d6f5c38986
--- /dev/null
+++ b/module/move/willbe/tests/inc/tool/graph_test.rs
@@ -0,0 +1,215 @@
+use super::*;
+
+use the_module::*;
+use graph::toposort;
+use collection::HashMap;
+use petgraph::Graph;
+use willbe::graph::topological_sort_with_grouping;
+
+struct IndexMap< T >( HashMap< T, usize > );
+
+impl< T > IndexMap< T >
+where
+  T : std::hash::Hash + Eq,
+{
+  pub fn new( elements : Vec< T > ) -> Self
+  {
+    let index_map = elements.into_iter().enumerate().map( |( index, value )| ( value, index ) ).collect();
+    Self( index_map )
+  }
+
+  pub fn position( &self, element : &T ) -> usize
+  {
+    self.0[ element ]
+  }
+}
+
+#[ test ]
+fn no_dependency()
+{
+  let mut graph = Graph::new();
+
+  let _node1 = graph.add_node( &"A" );
+  let _node2 = graph.add_node( &"B" );
+
+  let sorted = toposort( graph ).unwrap();
+
+  let index_map = IndexMap::new( sorted );
+  let node1_position = index_map.position( &"A" );
+  let node2_position = index_map.position( &"B" );
+
+  assert!( node1_position < node2_position );
+}
+
+#[ test ]
+fn a_depends_on_b()
+{
+  let mut graph = Graph::new();
+
+  let node1 = graph.add_node( &"A" );
+  let node2 = graph.add_node( &"B" );
+
+  graph.add_edge( node1, node2, &"" );
+
+  let sorted = toposort( graph ).unwrap();
+
+  let index_map = IndexMap::new( sorted );
+  let node1_position = index_map.position( &"A" );
+  let node2_position = index_map.position( &"B" );
+
+  assert!( node1_position > node2_position );
+}
+
+#[ test ]
+fn multiple_dependencies()
+{
+  let mut graph = Graph::new();
+
+  let a = graph.add_node( &"A" );
+  let b = graph.add_node( &"B" );
+  let c = graph.add_node( &"C" );
+
+  graph.add_edge( a, b, &"" );
+  graph.add_edge( a, c, &"" );
+
+  let sorted = toposort( graph ).unwrap();
+
+  let index_map = IndexMap::new( sorted );
+  let a_position = index_map.position( &"A" );
+  let b_position = index_map.position( &"B" );
+  let c_position = index_map.position( &"C" );
+
+  assert!( a_position > b_position );
+  assert!( a_position > c_position );
+}
+
+#[ test ]
+fn transitive_dependencies()
+{
+  let mut graph = Graph::new();
+
+  let a = graph.add_node( &"A" );
+  let b = graph.add_node( &"B" );
+  let c = graph.add_node( &"C" );
+
+  graph.add_edge( a, b, &"" );
+  graph.add_edge( b, c, &"" );
+
+  let sorted = toposort( graph ).unwrap();
+
+  let index_map = IndexMap::new( sorted );
+  let a_position = index_map.position( &"A" );
+  let b_position = index_map.position( &"B" );
+  let c_position = index_map.position( &"C" );
+
+  assert!( a_position > b_position );
+  assert!( b_position > c_position );
+}
+
+#[ test ]
+#[ should_panic( expected = "Cycle" ) ]
+fn cycle()
+{
+  let mut graph = Graph::new();
+
+  let node1 = graph.add_node( &"A" );
+  let node2 = graph.add_node( &"B" );
+
+  graph.add_edge( node1, node2, &"" );
+  graph.add_edge( node2, node1, &"" );
+
+  let _sorted = toposort( graph ).unwrap();
+}
+
+// input
+// B -> A
+// C -> A
+// output
+// [A], [B,C]
+#[ test ]
+fn simple_case()
+{
+  let mut graph = Graph::new();
+
+  let a_node = graph.add_node( &"A" );
+  let b_node = graph.add_node( &"B" );
+  let c_node = graph.add_node( &"C" );
+
+  graph.add_edge( b_node, a_node, &"B->A");
+  graph.add_edge( c_node, a_node, &"C->A");
+
+  let groups = topological_sort_with_grouping( graph );
+
+  assert_eq!( groups[ 0 ], vec![ "A" ] );
+  assert_eq!( groups[1].len(), 2 );
+  assert!( groups[ 1 ].contains( &"C" ) );
+  assert!( groups[ 1 ].contains( &"B" ) );
+}
+
+// input
+// digraph {
+//     0 [ label = "0" ]
+//     1 [ label = "1" ]
+//     2 [ label = "2" ]
+//     3 [ label = "3" ]
+//     4 [ label = "4" ]
+//     5 [ label = "5" ]
+//     6 [ label = "6" ]
+//     7 [ label = "7" ]
+//     4 -> 0 [ label = "" ]
+//     5 -> 0 [ label = "" ]
+//     6 -> 0 [ label = "" ]
+//     1 -> 3 [ label = "" ]
+//     2 -> 3 [ label = "" ]
+//     7 -> 6 [ label = "" ]
+//     3 -> 4 [ label = "" ]
+//     3 -> 5 [ label = "" ]
+//     3 -> 6 [ label = "" ]
+// }
+// visualization : https://viz-js.com/?dot=ZGlncmFwaCB7CiAgICAwIFsgbGFiZWwgPSAiMCIgXQogICAgMSBbIGxhYmVsID0gIjEiIF0KICAgIDIgWyBsYWJlbCA9ICIyIiBdCiAgICAzIFsgbGFiZWwgPSAiMyIgXQogICAgNCBbIGxhYmVsID0gIjQiIF0KICAgIDUgWyBsYWJlbCA9ICI1IiBdCiAgICA2IFsgbGFiZWwgPSAiNiIgXQogICAgNyBbIGxhYmVsID0gIjciIF0KICAgIDQgLT4gMCBbIGxhYmVsID0gIiIgXQogICAgNSAtPiAwIFsgbGFiZWwgPSAiIiBdCiAgICA2IC0-IDAgWyBsYWJlbCA9ICIiIF0KICAgIDEgLT4gMyBbIGxhYmVsID0gIiIgXQogICAgMiAtPiAzIFsgbGFiZWwgPSAiIiBdCiAgICA3IC0-IDYgWyBsYWJlbCA9ICIiIF0KICAgIDMgLT4gNCBbIGxhYmVsID0gIiIgXQogICAgMyAtPiA1IFsgbGFiZWwgPSAiIiBdCiAgICAzIC0-IDYgWyBsYWJlbCA9ICIiIF0KfQo~
+// output
+// [0], [6,5,4], [3], [1,2,7]
+#[ test ]
+fn complicated_test()
+{
+  let mut graph = Graph::new();
+
+  let n = graph.add_node( &"0" );
+  let n_1 = graph.add_node( &"1" );
+  let n_2 = graph.add_node( &"2" );
+  let n_3 = graph.add_node( &"3" );
+  let n_4 = graph.add_node( &"4" );
+  let n_5 = graph.add_node( &"5" );
+  let n_6 = graph.add_node( &"6" );
+  let n_7 = graph.add_node( &"7" );
+
+  graph.add_edge( n_1, n_3, &"" );
+  graph.add_edge( n_2, n_3, &"" );
+  graph.add_edge( n_7, n_6, &"" );
+
+  graph.add_edge( n_3, n_4, &"" );
+  graph.add_edge( n_3, n_5, &"" );
+  graph.add_edge( n_3, n_6, &"" );
+
+  graph.add_edge( n_4, n, &"" );
+  graph.add_edge( n_5, n, &"" );
+  graph.add_edge( n_6, n, &"" );
+
+  let groups = topological_sort_with_grouping( graph );
+
+  dbg!(&groups);
+
+  assert_eq!( groups[ 0 ], vec![ "0" ] );
+
+  assert_eq!( groups[1].len(), 3 );
+  assert!( groups[ 1 ].contains( &"6" ) );
+  assert!( groups[ 1 ].contains( &"5" ) );
+  assert!( groups[ 1 ].contains( &"4" ) );
+
+  assert_eq!( groups[ 2 ], vec![ "3" ] );
+
+  assert_eq!( groups[3].len(), 3 );
+  assert!( groups[ 3 ].contains( &"1" ) );
+  assert!( groups[ 3 ].contains( &"2" ) );
+  assert!( groups[ 3 ].contains( &"7" ) );
+}
diff --git a/module/move/willbe/tests/inc/tool/mod.rs b/module/move/willbe/tests/inc/tool/mod.rs
index 5766a1e126..08275f5556 100644
--- a/module/move/willbe/tests/inc/tool/mod.rs
+++ b/module/move/willbe/tests/inc/tool/mod.rs
@@ -1,7 +1,4 @@
-// use super::*;
+use super::*;
 
-// pub mod process;
-
-pub mod graph;
-
-pub mod query;
\ No newline at end of file
+pub mod graph_test;
+pub mod query_test;
diff --git a/module/move/willbe/tests/inc/tool/process.rs b/module/move/willbe/tests/inc/tool/process.rs
deleted file mode 100644
index 8d718c38d9..0000000000
--- a/module/move/willbe/tests/inc/tool/process.rs
+++ /dev/null
@@ -1,65 +0,0 @@
-// use super::*;
-// 
-// use process_tools::process::*;
-// 
-// use std::env::consts::EXE_EXTENSION;
-// use std::ffi::OsString;
-// use std::path::{ Path, PathBuf };
-// use std::process::Command;
-// 
-// pub fn path_to_exe( name : &Path, temp_path : &Path ) -> PathBuf
-// {
-//   _ = Command::new("rustc")
-//   .current_dir( temp_path )
-//   .arg( name )
-//   .status()
-//   .unwrap();
-// 
-//   PathBuf::from( temp_path )
-//   .join( name.file_name().unwrap() )
-//   .with_extension( EXE_EXTENSION )
-// }
-// 
-// #[ test ]
-// fn err_out_err()
-// {
-//   let temp = assert_fs::TempDir::new().unwrap();
-//   let root_path = Path::new( env!( "CARGO_MANIFEST_DIR" ) );
-//   let assets_relative_path = Path::new( ASSET_PATH );
-//   let assets_path = root_path.join( assets_relative_path );
-// 
-//   let args : [ OsString ; 0 ] = [];
-// 
-//   let options = process::Run::former()
-//   .bin_path( path_to_exe( &assets_path.join( "err_out_test" ).join( "err_out_err.rs" ), temp.path() ) )
-//   .args( args.to_vec() )
-//   .current_path( temp.to_path_buf() )
-//   .joining_streams( true )
-//   .form();
-// 
-//   let report = process::run( options ).unwrap().out;
-// 
-//   assert_eq!( "This is stderr text\nThis is stdout text\nThis is stderr text\n", report );
-// }
-// 
-// #[ test ]
-// fn out_err_out()
-// {
-//   let temp = assert_fs::TempDir::new().unwrap();
-//   let root_path = Path::new( env!( "CARGO_MANIFEST_DIR" ) );
-//   let assets_relative_path = Path::new( ASSET_PATH );
-//   let assets_path = root_path.join( assets_relative_path );
-// 
-//   let args : [ OsString ; 0 ] = [];
-// 
-//   let options = process::Run::former()
-//   .bin_path( path_to_exe( &assets_path.join( "err_out_test" ).join( "out_err_out.rs" ), temp.path() ) )
-//   .args( args.to_vec() )
-//   .current_path( temp.to_path_buf() )
-//   .joining_streams( true )
-//   .form();
-//   let report = process::run( options ).unwrap().out;
-// 
-//   assert_eq!( "This is stdout text\nThis is stderr text\nThis is stdout text\n", report );
-// }
-// 
diff --git a/module/move/willbe/tests/inc/tool/query.rs b/module/move/willbe/tests/inc/tool/query_test.rs
similarity index 97%
rename from module/move/willbe/tests/inc/tool/query.rs
rename to module/move/willbe/tests/inc/tool/query_test.rs
index 49c23b0946..fa98f5fab1 100644
--- a/module/move/willbe/tests/inc/tool/query.rs
+++ b/module/move/willbe/tests/inc/tool/query_test.rs
@@ -1,10 +1,11 @@
-use crate::the_module::query::
+use super::*;
+use the_module::query::
 {
-    parse,
-    ParseResult,
-    Value,
+  parse,
+  ParseResult,
+  Value,
 };
-use std::collections::HashMap;
+use the_module::collection::HashMap;
 use std::str::FromStr;
 
 #[ test ]
diff --git a/module/move/wplot/Cargo.toml b/module/move/wplot/Cargo.toml
index fb02fc12fa..a128e4223a 100644
--- a/module/move/wplot/Cargo.toml
+++ b/module/move/wplot/Cargo.toml
@@ -23,7 +23,7 @@ workspace = true
 [package.metadata.docs.rs]
 features = [ "full" ]
 all-features = false
-# exclude = [ "/tests", "/examples", "-*" ]
+
 include = [
   "/rust/impl/plot",
   "/Cargo.toml",
diff --git a/module/postponed/_video_experiment/Cargo.toml b/module/postponed/_video_experiment/Cargo.toml
index b167ebec39..b5b8409690 100644
--- a/module/postponed/_video_experiment/Cargo.toml
+++ b/module/postponed/_video_experiment/Cargo.toml
@@ -23,7 +23,7 @@ workspace = true
 [package.metadata.docs.rs]
 features = [ "full" ]
 all-features = false
-# exclude = [ "/tests", "/examples", "-*" ]
+
 include = [
   "/rust/impl/_blank",
   "/Cargo.toml",
diff --git a/module/postponed/non_std/Cargo.toml b/module/postponed/non_std/Cargo.toml
index 4b9d85d843..516d197d99 100644
--- a/module/postponed/non_std/Cargo.toml
+++ b/module/postponed/non_std/Cargo.toml
@@ -170,19 +170,19 @@ string_split = [ "string", "wtools/string_split" ]
 error = [ "wtools/error" ]
 error_default = [
   "error",
-  "error_for_lib",
-  "error_for_app",
+  "error_typed",
+  "error_untyped",
 ]
 error_full = [
   "error",
-  "error_for_lib",
-  "error_for_app",
+  "error_typed",
+  "error_untyped",
 ]
 error_no_std = [ "error", "wtools/error_no_std" ]
 error_use_alloc = [ "error", "wtools/error_use_alloc" ]
 
-error_for_lib = [ "error", "wtools/error_for_lib" ]
-error_for_app = [ "error", "wtools/error_for_app" ]
+error_typed = [ "error", "wtools/error_typed" ]
+error_untyped = [ "error", "wtools/error_untyped" ]
 
 # derive
 
diff --git a/module/postponed/std_tools/Cargo.toml b/module/postponed/std_tools/Cargo.toml
index e785849ad9..44d29afa00 100644
--- a/module/postponed/std_tools/Cargo.toml
+++ b/module/postponed/std_tools/Cargo.toml
@@ -171,19 +171,19 @@ string_split = [ "string", "wtools/string_split" ]
 error = [ "wtools/error" ]
 error_default = [
   "error",
-  "error_for_lib",
-  "error_for_app",
+  "error_typed",
+  "error_untyped",
 ]
 error_full = [
   "error",
-  "error_for_lib",
-  "error_for_app",
+  "error_typed",
+  "error_untyped",
 ]
 error_no_std = [ "error", "wtools/error_no_std" ]
 error_use_alloc = [ "error", "wtools/error_use_alloc" ]
 
-error_for_lib = [ "error", "wtools/error_for_lib" ]
-error_for_app = [ "error", "wtools/error_for_app" ]
+error_typed = [ "error", "wtools/error_typed" ]
+error_untyped = [ "error", "wtools/error_untyped" ]
 
 # derive
 
diff --git a/module/postponed/std_x/Cargo.toml b/module/postponed/std_x/Cargo.toml
index 4795beee5e..5693aa40a1 100644
--- a/module/postponed/std_x/Cargo.toml
+++ b/module/postponed/std_x/Cargo.toml
@@ -173,19 +173,19 @@ string_split = [ "string", "wtools/string_split" ]
 error = [ "wtools/error" ]
 error_default = [
   "error",
-  "error_for_lib",
-  "error_for_app",
+  "error_typed",
+  "error_untyped",
 ]
 error_full = [
   "error",
-  "error_for_lib",
-  "error_for_app",
+  "error_typed",
+  "error_untyped",
 ]
 error_no_std = [ "error", "wtools/error_no_std" ]
 error_use_alloc = [ "error", "wtools/error_use_alloc" ]
 
-error_for_lib = [ "error", "wtools/error_for_lib" ]
-error_for_app = [ "error", "wtools/error_for_app" ]
+error_typed = [ "error", "wtools/error_typed" ]
+error_untyped = [ "error", "wtools/error_untyped" ]
 
 # derive
 
diff --git a/module/postponed/type_constructor/Cargo.toml b/module/postponed/type_constructor/Cargo.toml
index 0c12790c65..52dbcd6b95 100644
--- a/module/postponed/type_constructor/Cargo.toml
+++ b/module/postponed/type_constructor/Cargo.toml
@@ -24,7 +24,7 @@ workspace = true
 features = [ "full" ]
 all-features = false
 
-# exclude = [ "/tests", "/examples", "-*" ]
+
 include = [
   "/rust/impl/dt/type_constructor",
   "/Cargo.toml",
diff --git a/module/postponed/type_constructor/src/lib.rs b/module/postponed/type_constructor/src/lib.rs
index 600458bfd0..29058c02b9 100644
--- a/module/postponed/type_constructor/src/lib.rs
+++ b/module/postponed/type_constructor/src/lib.rs
@@ -78,8 +78,10 @@ pub mod orphan
 
 /// Exposed namespace of the module.
 #[ cfg( feature = "enabled" ) ]
+#[ allow( unused_imports ) ]
 pub mod exposed
 {
+  use super::*;
   #[ doc( inline ) ]
   #[ allow( unused_imports ) ]
   pub use super::prelude::*;
diff --git a/module/postponed/type_constructor/src/type_constuctor/enumerable.rs b/module/postponed/type_constructor/src/type_constuctor/enumerable.rs
index 31b7e3b352..f66a735bd7 100644
--- a/module/postponed/type_constructor/src/type_constuctor/enumerable.rs
+++ b/module/postponed/type_constructor/src/type_constuctor/enumerable.rs
@@ -250,8 +250,10 @@ pub mod orphan
 }
 
 /// Exposed namespace of the module.
+#[ allow( unused_imports ) ]
 pub mod exposed
 {
+  use super::*;
   #[ doc( inline ) ]
   #[ allow( unused_imports ) ]
   pub use super::prelude::*;
diff --git a/module/postponed/type_constructor/src/type_constuctor/helper.rs b/module/postponed/type_constructor/src/type_constuctor/helper.rs
index e671e69bbc..0b42aa91f1 100644
--- a/module/postponed/type_constructor/src/type_constuctor/helper.rs
+++ b/module/postponed/type_constructor/src/type_constuctor/helper.rs
@@ -58,8 +58,10 @@ pub mod orphan
 }
 
 /// Exposed namespace of the module.
+#[ allow( unused_imports ) ]
 pub mod exposed
 {
+  use super::*;
   #[ doc( inline ) ]
   #[ allow( unused_imports ) ]
   pub use super::prelude::*;
diff --git a/module/postponed/type_constructor/src/type_constuctor/many.rs b/module/postponed/type_constructor/src/type_constuctor/many.rs
index 0544dac8c0..234b8824c0 100644
--- a/module/postponed/type_constructor/src/type_constuctor/many.rs
+++ b/module/postponed/type_constructor/src/type_constuctor/many.rs
@@ -563,8 +563,10 @@ pub mod orphan
 }
 
 /// Exposed namespace of the module.
+#[ allow( unused_imports ) ]
 pub mod exposed
 {
+  use super::*;
   #[ doc( inline ) ]
   #[ allow( unused_imports ) ]
   pub use super::prelude::*;
diff --git a/module/postponed/type_constructor/src/type_constuctor/mod.rs b/module/postponed/type_constructor/src/type_constuctor/mod.rs
index df047d149f..fa5a78eb70 100644
--- a/module/postponed/type_constructor/src/type_constuctor/mod.rs
+++ b/module/postponed/type_constructor/src/type_constuctor/mod.rs
@@ -95,8 +95,10 @@ pub mod orphan
 }
 
 /// Exposed namespace of the module.
+#[ allow( unused_imports ) ]
 pub mod exposed
 {
+  use super::*;
   #[ doc( inline ) ]
   #[ allow( unused_imports ) ]
   pub use super::prelude::*;
diff --git a/module/postponed/type_constructor/src/type_constuctor/no_many.rs b/module/postponed/type_constructor/src/type_constuctor/no_many.rs
index 8e615be58b..51a1e6948d 100644
--- a/module/postponed/type_constructor/src/type_constuctor/no_many.rs
+++ b/module/postponed/type_constructor/src/type_constuctor/no_many.rs
@@ -49,8 +49,10 @@ pub mod orphan
 }
 
 /// Exposed namespace of the module.
+#[ allow( unused_imports ) ]
 pub mod exposed
 {
+  use super::*;
   #[ doc( inline ) ]
   #[ allow( unused_imports ) ]
   pub use super::prelude::*;
diff --git a/module/postponed/type_constructor/src/type_constuctor/pair.rs b/module/postponed/type_constructor/src/type_constuctor/pair.rs
index 18dfb74a30..91db5238e1 100644
--- a/module/postponed/type_constructor/src/type_constuctor/pair.rs
+++ b/module/postponed/type_constructor/src/type_constuctor/pair.rs
@@ -216,8 +216,10 @@ pub mod orphan
 }
 
 /// Exposed namespace of the module.
+#[ allow( unused_imports ) ]
 pub mod exposed
 {
+  use super::*;
   #[ doc( inline ) ]
   #[ allow( unused_imports ) ]
   pub use super::prelude::*;
diff --git a/module/postponed/type_constructor/src/type_constuctor/single.rs b/module/postponed/type_constructor/src/type_constuctor/single.rs
index 23aecddbc7..1d49657539 100644
--- a/module/postponed/type_constructor/src/type_constuctor/single.rs
+++ b/module/postponed/type_constructor/src/type_constuctor/single.rs
@@ -551,8 +551,10 @@ pub mod orphan
 }
 
 /// Exposed namespace of the module.
+#[ allow( unused_imports ) ]
 pub mod exposed
 {
+  use super::*;
   #[ doc( inline ) ]
   #[ allow( unused_imports ) ]
   pub use super::prelude::*;
diff --git a/module/postponed/type_constructor/src/type_constuctor/traits.rs b/module/postponed/type_constructor/src/type_constuctor/traits.rs
index 97c74c822d..6c7ab35d1d 100644
--- a/module/postponed/type_constructor/src/type_constuctor/traits.rs
+++ b/module/postponed/type_constructor/src/type_constuctor/traits.rs
@@ -75,8 +75,10 @@ pub mod orphan
 }
 
 /// Exposed namespace of the module.
+#[ allow( unused_imports ) ]
 pub mod exposed
 {
+  use super::*;
   #[ doc( inline ) ]
   #[ allow( unused_imports ) ]
   pub use super::prelude::*;
diff --git a/module/postponed/type_constructor/src/type_constuctor/types.rs b/module/postponed/type_constructor/src/type_constuctor/types.rs
index c6c3aa2224..d6d4501d69 100644
--- a/module/postponed/type_constructor/src/type_constuctor/types.rs
+++ b/module/postponed/type_constructor/src/type_constuctor/types.rs
@@ -831,8 +831,10 @@ pub mod orphan
 }
 
 /// Exposed namespace of the module.
+#[ allow( unused_imports ) ]
 pub mod exposed
 {
+  use super::*;
   #[ doc( inline ) ]
   #[ allow( unused_imports ) ]
   pub use super::prelude::*;
diff --git a/module/postponed/type_constructor/src/type_constuctor/vectorized_from.rs b/module/postponed/type_constructor/src/type_constuctor/vectorized_from.rs
index 3621b81c7e..6d7cc73991 100644
--- a/module/postponed/type_constructor/src/type_constuctor/vectorized_from.rs
+++ b/module/postponed/type_constructor/src/type_constuctor/vectorized_from.rs
@@ -159,8 +159,10 @@ pub mod orphan
 }
 
 /// Exposed namespace of the module.
+#[ allow( unused_imports ) ]
 pub mod exposed
 {
+  use super::*;
   #[ doc( inline ) ]
   #[ allow( unused_imports ) ]
   pub use super::prelude::*;
diff --git a/module/postponed/wpublisher/Cargo.toml b/module/postponed/wpublisher/Cargo.toml
index 720a12fc59..194b0b7719 100644
--- a/module/postponed/wpublisher/Cargo.toml
+++ b/module/postponed/wpublisher/Cargo.toml
@@ -23,7 +23,7 @@ workspace = true
 [package.metadata.docs.rs]
 features = [ "full" ]
 all-features = false
-# exclude = [ "/tests", "/examples", "-*" ]
+
 include = [
   "/rust/impl/publisher",
   "/Cargo.toml",
diff --git a/module/step/meta/src/meta/_template_procedural_macro/front/lib.rs b/module/step/meta/src/meta/_template_procedural_macro/front/lib.rs
index 68e7399466..65b8231fde 100644
--- a/module/step/meta/src/meta/_template_procedural_macro/front/lib.rs
+++ b/module/step/meta/src/meta/_template_procedural_macro/front/lib.rs
@@ -34,8 +34,10 @@ pub mod protected
 pub use protected::*;
 
 /// Exposed namespace of the module.
+#[ allow( unused_imports ) ]
 pub mod exposed
 {
+  use super::*;
   pub use super::prelude::*;
   pub use meta::*;
 }
diff --git a/module/step/meta/src/meta/_template_procedural_macro/runtime/lib.rs b/module/step/meta/src/meta/_template_procedural_macro/runtime/lib.rs
index 3afe6ce196..6f42675ad6 100644
--- a/module/step/meta/src/meta/_template_procedural_macro/runtime/lib.rs
+++ b/module/step/meta/src/meta/_template_procedural_macro/runtime/lib.rs
@@ -27,8 +27,10 @@ pub mod protected
 pub use protected::*;
 
 /// Exposed namespace of the module.
+#[ allow( unused_imports ) ]
 pub mod exposed
 {
+  use super::*;
   pub use super::prelude::*;
 }
 
diff --git a/module/template/layer/layer.rs b/module/template/layer/layer.rs
index e3d184e4a0..9000608222 100644
--- a/module/template/layer/layer.rs
+++ b/module/template/layer/layer.rs
@@ -39,8 +39,10 @@ pub mod orphan
 }
 
 /// Exposed namespace of the module.
+#[ allow( unused_imports ) ]
 pub mod exposed
 {
+  use super::*;
   #[ doc( inline ) ]
   #[ allow( unused_imports ) ]
   pub use super::prelude::*;
diff --git a/step/Cargo.toml b/step/Cargo.toml
new file mode 100644
index 0000000000..70f00c8c96
--- /dev/null
+++ b/step/Cargo.toml
@@ -0,0 +1,24 @@
+[package]
+name = "step"
+version = "0.0.0"
+edition = "2021"
+license = "MIT"
+publish = false
+readme = "Readme.md"
+description = """
+Build and deploy steps.
+"""
+
+[lints]
+workspace = true
+
+[package.metadata.docs.rs]
+features = [ "full" ]
+all-features = false
+
+[dependencies]
+# former = { workspace = true, features = [ "full" ] }
+willbe = { workspace = true, features = [ "full" ] }
+
+[dev-dependencies]
+test_tools = { workspace = true }
diff --git a/step/src/bin/sources.rs b/step/src/bin/sources.rs
new file mode 100644
index 0000000000..676fc25d02
--- /dev/null
+++ b/step/src/bin/sources.rs
@@ -0,0 +1,66 @@
+//! List all sources
+
+use willbe::exposed::*;
+use willbe::{ Entries, Sources, CodeItems};
+use std::
+{
+  fs,
+  fs::File,
+  io::Write,
+};
+
+fn main() -> Result< () >
+{
+
+  let workspace = Workspace::try_from( CurrentPath )?;
+
+  let package = workspace
+  .packages_which()
+  .crate_dir( CrateDir::transitive_try_from::< AbsolutePath >( CurrentPath )? )
+  .find()
+  .expect( "No workspace at current path" )
+  ;
+
+  println!( " = package - {}", package.crate_dir().unwrap() );
+
+//   let ins = r#"
+// pub mod exposed
+// {
+// "#;
+//
+//   let sub = r#"
+// pub mod exposed
+// {
+//   #[ allow( unused_imports ) ]
+//   use super::*;
+// "#;
+
+  package.sources().for_each( | source |
+  {
+    println!( "   - {source}" );
+
+    // let code = source.as_code().unwrap();
+    // let code2 = code.replace( ins, sub );
+
+    // source
+    // .items()
+    // .for_each( | item |
+    // {
+    //   println!( "     - {}", std::any::type_name_of_val( &item ) );
+    //   // println!( "     - item : {item:?}" );
+    // });
+
+  });
+
+  // println!( "{}", package.as_code().unwrap() );
+
+  // let dst_path = format!( "{}.rs", package.name() );
+  // let _ = fs::remove_file( &dst_path );
+  // let code = package.as_code().unwrap();
+  // let mut file = File::create( dst_path )?;
+  // file.write_all( code.as_bytes() )?;
+
+  dbg!( &workspace.crate_dir );
+
+  return Ok( () );
+}