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Add re_exports for libraries #2605

Merged
merged 22 commits into from
Sep 18, 2019
Merged

Add re_exports for libraries #2605

merged 22 commits into from
Sep 18, 2019

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rgrinberg
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This is an attempt to implement a proper solution described by @avsm in #2595

There are some things that need to be discussed before I finish the implementation:

  • re_exports should only allow libraries already present in libraries.

  • When we write re_exports to the the dune-package files, should we just write the closure of re-exported libraries? This is simpler to implement, but perhaps it makes sense to copy what we do for requires? I'm not a fan of that as it complicates things and I don't see the benefit. What was the reason we got rid of writing the transitive closure in the requires field?

@ghost
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ghost commented Sep 4, 2019

re_exports should only allow libraries already present in libraries.

That seems right

When we write re_exports to the the dune-package files, should we just write the closure of re-exported libraries? This is simpler to implement, but perhaps it makes sense to copy what we do for requires? I'm not a fan of that as it complicates things and I don't see the benefit. What was the reason we got rid of writing the transitive closure in the requires field?

We don't want to re-export the transitive dependencies though

@rgrinberg
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Just to clarify, this is the behavior that I expect. If a library a re-exports b and the library b re-exports c, I would expect that users of a will find both b and c visible. @diml do you agree with this behavior?

@ghost
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ghost commented Sep 5, 2019

Yep, I agree with this. What I had in mind is: if c depends on d but doesn't re-export d, then users of a shouldn't see d.

@rgrinberg
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Okay, good. So my question was for how should we output the dune-package files for the libraries. For a re-exports b which re-exports c, we can have re_exports for a be:

  • Non transitive and just have (re_exports b). Dune will walk the transitive re-exports fields to get a full list of re-exports

  • Transitive and have the full list of re-exports. In this case it would be (re_exports b c).

I think the latter is easier to implement but we veered away from it for normal dependencies.

@ghost
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ghost commented Sep 5, 2019

Putting the transitive list seems good. IIRC, for normal dependencies there was an issue when depending on non-dune libraries that were using predicates to select different dependencies. If you store the transitive dependencies then the choice is written in stone once and for all and you can't change it afterwards. In this case, it's not a concern though.

And re-exporting things should clearly be a "sticky" property.

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The distinction between public and private names is complicating the
implementation of this issue a bit. I'm not sure whether the predicate language
should apply to private or public names.

I see a couple of options:

  • As anywhere else in dune, public and private names should be interchangeable. So
    the predicate language should apply to both names.

  • Another good option is just to allow filtering based on the names specified by
    the user. So if a user uses the name bar.foo in the libraries field, it
    would have to be specified as bar.foo in the re_exports field as well.

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After discussing this with Jeremie, the conclusion is just that it's simpler to avoid these altogether by getting rid of the predicate language in this case. We can make do with library names. I will update this PR accordingly.

@rgrinberg rgrinberg changed the title Add re_exports for libraries [WIP] Add re_exports for libraries Sep 10, 2019
@rgrinberg rgrinberg changed the title [WIP] Add re_exports for libraries Add re_exports for libraries Sep 12, 2019
@rgrinberg
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@diml Have a look, this should be working now. In the end, I gave up on trying to factor the closure operation. It ended up being quite complicated.

@ghost
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ghost commented Sep 12, 2019

We should check that the list of re-exported libraries are also listed as dependencies.

@rgrinberg
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We should check that the list of re-exported libraries are also listed as dependencies.

I can add that, but now I'm doubting if a field re_exports is the right UI for this feature. Here's another related problem: Should a user be allowed to use a private name in the libraries field and then re_export using the public_name? To me that seems a bit fishy.

Here's a proposal that will solve both problems:

Rather than a re_exports field, we add an exports constructor to libraries elements. For example, (libraries foo (re_exports bar)) will add a dependency on foo and add a re-exported dependency on bar. What do you think?

@ghost
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ghost commented Sep 16, 2019

That seems fine yes. It means that we can't re-export a dependency under a (select ...), but maybe that's a good thing.

@rgrinberg
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That seems fine yes. It means that we can't re-export a dependency under a (select ...), but maybe that's a good thing.

I think this needs explicit support from the old scheme as well. So either scheme will require more work to make selectable exports work

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ghost commented Sep 16, 2019

Yh, plus it's not even clear that it's need. In general, one dispatch between different dependencies for the implementation, not the interface. So a constructor rather than a field seems fine.

@rgrinberg rgrinberg force-pushed the re-exports branch 2 times, most recently from a3d43a0 to 8b81f43 Compare September 17, 2019 11:00
@rgrinberg
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I've now implemented the re_exports constructors. The set of changes that this required turned out to be much larger than I expected. Some comments why this might be the case:

  • The distinction between Lib_info.Deps.{Simple,Complex} doesn't seem very helpful. Simple can always be injected to Complex and it doesn't really add any type safety either.

  • To increase the type safety, it could perhaps be useful to parameterize Lib_info.t over the kind of requires that it contains. The idea being that there are basically 2 modes: evaluated vs. unevaluated. This property is orthogonal to local vs. external as it's a matter of whether we obtained the info from the Dune_file.Library.t (unevaluated), Lib.t (evaluated), Dune_package, (evaluated).

I also removed Dune_package.Lib.requires as it was only used in the tests.

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ghost commented Sep 17, 2019

How would you inject Simple into Complex? One reason to keep them distinct is that the interpretation of complex dependencies is much more complex and costly than simple ones, while simple ones are the most common case by far.

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How would you inject Simple into Complex? One reason to keep them distinct is that the interpretation of complex dependencies is much more complex and costly than simple ones, while simple ones are the most common case by far.

I would inject it with something like Complex (List.map ~f:Lib_dep.direct simple).

Also, I wasn't aware that Complex was so much more expensive than Simple. When I looked, resolve_complex_deps looked well behaved when there were no select dependencies.

@ghost
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ghost commented Sep 17, 2019

Ah indeed, I was confusing with injecting direct dependencies into select ones. In that case, yes that seems fine to me.


Attempting to re-export dependencies outside of libraries fails:
$ dune build --root re-export-bad-attempt @all
Entering directory 're-export-bad-attempt'
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Shouldn't that fail?

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I guess not, because (re_export foo) will always work as long as foo works. It's interpreted as a modifier on the library name, so it's no longer possible to have mismatches like we did before.

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Should the comment be updated then? The comment makes me think that the command is expected to fail

jeremiedimino and others added 9 commits September 18, 2019 21:47
Signed-off-by: Jeremie Dimino <[email protected]>
Signed-off-by: Rudi Grinberg <[email protected]>
They are just a performance optimization that isn't buying us all that much

Signed-off-by: Rudi Grinberg <[email protected]>
Cons the accumulated library list rather than appending.

Signed-off-by: Rudi Grinberg <[email protected]>
Instead of setting it field by field, we just update everything in a
single call before getting it into a dune_package ready form.

Signed-off-by: Rudi Grinberg <[email protected]>
Signed-off-by: Rudi Grinberg <[email protected]>
Signed-off-by: Rudi Grinberg <[email protected]>
@rgrinberg rgrinberg merged commit b2d1057 into ocaml:master Sep 18, 2019
@rgrinberg rgrinberg deleted the re-exports branch September 18, 2019 14:22
rgrinberg added a commit to rgrinberg/opam-repository that referenced this pull request Oct 31, 2019
…lugin, dune-private-libs and dune-glob (2.0.0+draft1)

CHANGES:

- Introduce `alias` and `package` fields to the `rule` stanza. This is the
  preferred way of attaching rules to aliases. (ocaml/dune#2744, @rgrinberg)

- Add field `(optional)` for executable stanzas (ocaml/dune#2463, fixes ocaml/dune#2433, @bobot)

- Infer targets for rule stanzas expressed in long form (ocaml/dune#2494, fixes ocaml/dune#2469,
  @NathanReb)

- Indicate the progress of the initial file tree loading (ocaml/dune#2459, fixes ocaml/dune#2374,
  @bobot)

- Build `.cm[ox]` files for executables more eagerly. This speeds up builds at
  the cost of building unnecessary artifacts in some cases. Some of these extra
  artifacts can fail to built, so this is a breaking change. (ocaml/dune#2268, @rgrinberg)

- Do not put the `<package>.install` files in the source tree unless `-p` or
  `--promote-install-files` is passed on the command line (ocaml/dune#2329, @diml)

- Change `implicit_transive_deps` to be false. Implicit transitive deps now must
  be manually enabled (ocaml/dune#2306, @rgrinberg)

- Compilation units of user defined executables are now mangled by default. This
  is done to prevent the accidental collision with library dependencies of the
  executable. (ocaml/dune#2364, fixes ocaml/dune#2292, @rgrinberg)

- Enable `(explicit_js_mode)` by default. (ocaml/dune#1941, @nojb)

- Add an option to clear the console in-between builds with
 `--terminal-persistence=clear-on-rebuild`

- Stop symlinking object files to main directory for stanzas defined `jbuild`
  files (ocaml/dune#2440, @rgrinberg)

- Library names are now validated in a strict fashion. Previously, invalid names
  would be allowed for unwrapped libraries (ocaml/dune#2442, @rgrinberg)

- mli only modules must now be explicitly declared. This was previously a
  warning and is now an error. (ocaml/dune#2442, @rgrinberg)

- Modules filtered out from the module list via the Ordered Set Language must
  now be actual modules. (ocaml/dune#2442, @rgrinberg)

- Actions which introduce targets where new targets are forbidden (e.g.
  preprocessing) are now an error instead of a warning. (ocaml/dune#2442, @rgrinberg)

- No longer install a `jbuilder` binary. (ocaml/dune#2441, @diml)

- Stub names are no longer allowed relative paths. This was previously a warning
  and is now an error (ocaml/dune#2443, @rgrinberg).

- Define (paths ...) fields in (context ...) definitions in order to set or
  extend any PATH-like variable in the context environment. (ocaml/dune#2426, @nojb)

- The `diff` action will always normalize newlines before diffing. Perviousy, it
  would not do this normalization for rules defined in jbuild files. (ocaml/dune#2457,
  @rgrinberg)

- Modules may no longer belong to more than one stanza. This was previously
  allowed only in stanzas defined in `jbuild` files. (ocaml/dune#2458, @rgrinberg)

- Remove support for `jbuild-ignore` files. They have been replaced by the the
  `dirs` stanza in `dune` files. (ocaml/dune#2456, @rgrinberg)

- Add a new config option `sandboxing_preference`, the cli argument `--sandbox`,
  and the dep spec `sandbox` in dune language. These let the user control the level of
  sandboxing done by dune per rule and globally. The rule specification takes precedence.
  The global configuration merely specifies the default.
  (ocaml/dune#2213, @aalekseyev, @diml)

- Remove support for old style subsystems. Dune will now emit a warning to
  reinstall the library with the old style subsystem. (ocaml/dune#2480, @rgrinberg)

- Add action (with-stdin-from <file> <action>) to redirect input from <file>
  when performing <action>. (ocaml/dune#2487, @nojb)

- Change the automatically generated odoc index to only list public modules.
  This only affects unwrapped libraries (ocaml/dune#2479, @rgrinberg)

- Set up formatting rules by default. They can be configured through a new
  `(formatting)` stanza in `dune-project` (ocaml/dune#2347, fixes ocaml/dune#2315, @emillon)

- Change default target from `@install` to `@all`. (ocaml/dune#2449, fixes ocaml/dune#1220,
  @rgrinberg)

- Include building stubs in `@check` rules. (@rgrinberg, ocaml/dune#2530)

- Get rid of ad-hoc rules for guessing the version. Dune now only
  relies on the version written in the `dune-project` file and no
  longer read `VERSION` or similar files (ocaml/dune#2541, @diml)

- In `(diff? x y)` action, require `x` to exist and register a
  dependency on that file. (ocaml/dune#2486, @aalekseyev)

- On Windows, an .exe suffix is no longer added implicitly to binary names that
  already end in .exe. Second, when resolving binary names, .opt variants are no
  longer chosen automatically. (ocaml/dune#2543, @nojb)

- Make `(diff? x y)` move the correction file (`y`) away from the build
  directory to promotion staging area. This makes corrections work with
  sandboxing and in general reduces build directory pollution. (ocaml/dune#2486,
  @aalekseyev, fixes ocaml/dune#2482)

- `c_flags`, `c_names` and `cxx_names` are now supported in `executable`
  and `executables` stanzas. (ocaml/dune#2562, @nojb)
  Note: this feature has been subsequently extended into a separate
  `foreign_stubs` field. (ocaml/dune#2659, RFC ocaml/dune#2650, @snowleopard)

- Remove git integration from `$ dune upgrade` (ocaml/dune#2565, @rgrinberg)

- Add a `--disable-promotion` to disable all modification to the source
  directory. There's also a corresponding `DUNE_DISABLE_PROMOTION` environment
  variable. (ocaml/dune#2588, fix ocaml/dune#2568, @rgrinberg)

- Add a `forbidden_libraries` field to prevent some library from being
  linked in an executable. This help detecting who accidently pulls in
  `unix` for instance (ocaml/dune#2570, @diml)

- Fix incorrect error message when a variable is expanded in static context:
  `%{lib:lib:..}` when the library does not exist. (ocaml/dune#2597, fix ocaml/dune#1541,
  @rgrinberg)

- Add `--sections` option to `$ dune install` to install subsections of .install
  files. This is useful for installing only the binaries in a workspace for
  example. (ocaml/dune#2609, fixes ocaml/dune#2554, @rgrinberg)

- Drop support for `jbuild` and `jbuild-ignore` files (ocaml/dune#2607, @diml)

- Add a `dune-action-plugin` library for describing dependencies direcly in
  the executable source. Programs that use this feature can be run by a new
  action (dynamic-run <progn> ...). (ocaml/dune#2635, @staronj, @aalekseyev)

- Stop installing the `ocaml-syntax-shims` binary. In order to use
  `future_syntax`, one now need to depend on the `ocaml-syntax-shims`
  package (ocaml/dune#2654, @diml)

- Add support for dependencies that are re-exported. Such dependencies
  are marked with`re_export` and will automatically be provided to
  users of a library (ocaml/dune#2605, @rgrinberg)

- Add a `deprecated_library_name` stanza to redirect old names after a
  library has been renamed (ocaml/dune#2528, @diml)

- Error out when a `preprocessor_deps` field is present but not
  `preprocess` field is. It is a warning with Dune 1.x projects
  (ocaml/dune#2660, @Julow)

- Dune will use `-output-complete-exe` instead of `-custom` when compiling
  self-contained bytecode executables whenever this options is available
  (OCaml version >= 4.10) (ocaml/dune#2692, @nojb)

- Add action `(with-accepted-exit-codes <pred> <action>)` to specify the set of
  successful exit codes of `<action>`. `<pred>` is specified using the predicate
  language. (ocaml/dune#2699, @nojb)

- Do not setup rules for disabled libraries (ocaml/dune#2491, fixes ocaml/dune#2272, @bobot)

- Configurator: filter out empty flags from `pkg-config` (ocaml/dune#2716, @AltGr)

- `no_keep_locs` is a no-op for projects that use `lang dune` older than 2.0. In
  projects where the language is at least `2.0`, the field is now forbidden.
  (ocaml/dune#2752, fixes ocaml/dune#2747, @rgrinberg)

- Extend support for foreign sources and archives via the `(foreign_library ...)`
  stanza as well as the `(foreign_stubs ...)` and `(foreign_archives ...)` fields.
  (ocaml/dune#2659, RFC ocaml/dune#2650, @snowleopard)

- Add (deprecated_package_names) field to (package) declaration in
  dune-project. The names declared here can be used in the (old_public_name)
  field of (deprecated_library_name) stanza. These names are interpreted as
  library names (not prefixed by a package name) and appropiate redirections are
  setup in their META files. This feaure is meant to migrate old libraries which
  do not follow Dune's convention of prefixing libraries with the package
  name. (ocaml/dune#2696, @nojb)

- The fields `license`, `authors`, `maintainers`, `source`, `bug_reports`,
  `homepage`, and `documentation` of `dune-project` can now be overriden on a
  per-package basis. (ocaml/dune#2774, @nojb)
rgrinberg added a commit to rgrinberg/opam-repository that referenced this pull request Oct 31, 2019
…lugin, dune-private-libs and dune-glob (2.0.0+draft1)

CHANGES:

- Introduce `alias` and `package` fields to the `rule` stanza. This is the
  preferred way of attaching rules to aliases. (ocaml/dune#2744, @rgrinberg)

- Add field `(optional)` for executable stanzas (ocaml/dune#2463, fixes ocaml/dune#2433, @bobot)

- Infer targets for rule stanzas expressed in long form (ocaml/dune#2494, fixes ocaml/dune#2469,
  @NathanReb)

- Indicate the progress of the initial file tree loading (ocaml/dune#2459, fixes ocaml/dune#2374,
  @bobot)

- Build `.cm[ox]` files for executables more eagerly. This speeds up builds at
  the cost of building unnecessary artifacts in some cases. Some of these extra
  artifacts can fail to built, so this is a breaking change. (ocaml/dune#2268, @rgrinberg)

- Do not put the `<package>.install` files in the source tree unless `-p` or
  `--promote-install-files` is passed on the command line (ocaml/dune#2329, @diml)

- Change `implicit_transive_deps` to be false. Implicit transitive deps now must
  be manually enabled (ocaml/dune#2306, @rgrinberg)

- Compilation units of user defined executables are now mangled by default. This
  is done to prevent the accidental collision with library dependencies of the
  executable. (ocaml/dune#2364, fixes ocaml/dune#2292, @rgrinberg)

- Enable `(explicit_js_mode)` by default. (ocaml/dune#1941, @nojb)

- Add an option to clear the console in-between builds with
 `--terminal-persistence=clear-on-rebuild`

- Stop symlinking object files to main directory for stanzas defined `jbuild`
  files (ocaml/dune#2440, @rgrinberg)

- Library names are now validated in a strict fashion. Previously, invalid names
  would be allowed for unwrapped libraries (ocaml/dune#2442, @rgrinberg)

- mli only modules must now be explicitly declared. This was previously a
  warning and is now an error. (ocaml/dune#2442, @rgrinberg)

- Modules filtered out from the module list via the Ordered Set Language must
  now be actual modules. (ocaml/dune#2442, @rgrinberg)

- Actions which introduce targets where new targets are forbidden (e.g.
  preprocessing) are now an error instead of a warning. (ocaml/dune#2442, @rgrinberg)

- No longer install a `jbuilder` binary. (ocaml/dune#2441, @diml)

- Stub names are no longer allowed relative paths. This was previously a warning
  and is now an error (ocaml/dune#2443, @rgrinberg).

- Define (paths ...) fields in (context ...) definitions in order to set or
  extend any PATH-like variable in the context environment. (ocaml/dune#2426, @nojb)

- The `diff` action will always normalize newlines before diffing. Perviousy, it
  would not do this normalization for rules defined in jbuild files. (ocaml/dune#2457,
  @rgrinberg)

- Modules may no longer belong to more than one stanza. This was previously
  allowed only in stanzas defined in `jbuild` files. (ocaml/dune#2458, @rgrinberg)

- Remove support for `jbuild-ignore` files. They have been replaced by the the
  `dirs` stanza in `dune` files. (ocaml/dune#2456, @rgrinberg)

- Add a new config option `sandboxing_preference`, the cli argument `--sandbox`,
  and the dep spec `sandbox` in dune language. These let the user control the level of
  sandboxing done by dune per rule and globally. The rule specification takes precedence.
  The global configuration merely specifies the default.
  (ocaml/dune#2213, @aalekseyev, @diml)

- Remove support for old style subsystems. Dune will now emit a warning to
  reinstall the library with the old style subsystem. (ocaml/dune#2480, @rgrinberg)

- Add action (with-stdin-from <file> <action>) to redirect input from <file>
  when performing <action>. (ocaml/dune#2487, @nojb)

- Change the automatically generated odoc index to only list public modules.
  This only affects unwrapped libraries (ocaml/dune#2479, @rgrinberg)

- Set up formatting rules by default. They can be configured through a new
  `(formatting)` stanza in `dune-project` (ocaml/dune#2347, fixes ocaml/dune#2315, @emillon)

- Change default target from `@install` to `@all`. (ocaml/dune#2449, fixes ocaml/dune#1220,
  @rgrinberg)

- Include building stubs in `@check` rules. (@rgrinberg, ocaml/dune#2530)

- Get rid of ad-hoc rules for guessing the version. Dune now only
  relies on the version written in the `dune-project` file and no
  longer read `VERSION` or similar files (ocaml/dune#2541, @diml)

- In `(diff? x y)` action, require `x` to exist and register a
  dependency on that file. (ocaml/dune#2486, @aalekseyev)

- On Windows, an .exe suffix is no longer added implicitly to binary names that
  already end in .exe. Second, when resolving binary names, .opt variants are no
  longer chosen automatically. (ocaml/dune#2543, @nojb)

- Make `(diff? x y)` move the correction file (`y`) away from the build
  directory to promotion staging area. This makes corrections work with
  sandboxing and in general reduces build directory pollution. (ocaml/dune#2486,
  @aalekseyev, fixes ocaml/dune#2482)

- `c_flags`, `c_names` and `cxx_names` are now supported in `executable`
  and `executables` stanzas. (ocaml/dune#2562, @nojb)
  Note: this feature has been subsequently extended into a separate
  `foreign_stubs` field. (ocaml/dune#2659, RFC ocaml/dune#2650, @snowleopard)

- Remove git integration from `$ dune upgrade` (ocaml/dune#2565, @rgrinberg)

- Add a `--disable-promotion` to disable all modification to the source
  directory. There's also a corresponding `DUNE_DISABLE_PROMOTION` environment
  variable. (ocaml/dune#2588, fix ocaml/dune#2568, @rgrinberg)

- Add a `forbidden_libraries` field to prevent some library from being
  linked in an executable. This help detecting who accidently pulls in
  `unix` for instance (ocaml/dune#2570, @diml)

- Fix incorrect error message when a variable is expanded in static context:
  `%{lib:lib:..}` when the library does not exist. (ocaml/dune#2597, fix ocaml/dune#1541,
  @rgrinberg)

- Add `--sections` option to `$ dune install` to install subsections of .install
  files. This is useful for installing only the binaries in a workspace for
  example. (ocaml/dune#2609, fixes ocaml/dune#2554, @rgrinberg)

- Drop support for `jbuild` and `jbuild-ignore` files (ocaml/dune#2607, @diml)

- Add a `dune-action-plugin` library for describing dependencies direcly in
  the executable source. Programs that use this feature can be run by a new
  action (dynamic-run <progn> ...). (ocaml/dune#2635, @staronj, @aalekseyev)

- Stop installing the `ocaml-syntax-shims` binary. In order to use
  `future_syntax`, one now need to depend on the `ocaml-syntax-shims`
  package (ocaml/dune#2654, @diml)

- Add support for dependencies that are re-exported. Such dependencies
  are marked with`re_export` and will automatically be provided to
  users of a library (ocaml/dune#2605, @rgrinberg)

- Add a `deprecated_library_name` stanza to redirect old names after a
  library has been renamed (ocaml/dune#2528, @diml)

- Error out when a `preprocessor_deps` field is present but not
  `preprocess` field is. It is a warning with Dune 1.x projects
  (ocaml/dune#2660, @Julow)

- Dune will use `-output-complete-exe` instead of `-custom` when compiling
  self-contained bytecode executables whenever this options is available
  (OCaml version >= 4.10) (ocaml/dune#2692, @nojb)

- Add action `(with-accepted-exit-codes <pred> <action>)` to specify the set of
  successful exit codes of `<action>`. `<pred>` is specified using the predicate
  language. (ocaml/dune#2699, @nojb)

- Do not setup rules for disabled libraries (ocaml/dune#2491, fixes ocaml/dune#2272, @bobot)

- Configurator: filter out empty flags from `pkg-config` (ocaml/dune#2716, @AltGr)

- `no_keep_locs` is a no-op for projects that use `lang dune` older than 2.0. In
  projects where the language is at least `2.0`, the field is now forbidden.
  (ocaml/dune#2752, fixes ocaml/dune#2747, @rgrinberg)

- Extend support for foreign sources and archives via the `(foreign_library ...)`
  stanza as well as the `(foreign_stubs ...)` and `(foreign_archives ...)` fields.
  (ocaml/dune#2659, RFC ocaml/dune#2650, @snowleopard)

- Add (deprecated_package_names) field to (package) declaration in
  dune-project. The names declared here can be used in the (old_public_name)
  field of (deprecated_library_name) stanza. These names are interpreted as
  library names (not prefixed by a package name) and appropiate redirections are
  setup in their META files. This feaure is meant to migrate old libraries which
  do not follow Dune's convention of prefixing libraries with the package
  name. (ocaml/dune#2696, @nojb)

- The fields `license`, `authors`, `maintainers`, `source`, `bug_reports`,
  `homepage`, and `documentation` of `dune-project` can now be overriden on a
  per-package basis. (ocaml/dune#2774, @nojb)
rgrinberg added a commit to rgrinberg/opam-repository that referenced this pull request Oct 31, 2019
…lugin, dune-private-libs and dune-glob (2.0.0+draft1)

CHANGES:

- Introduce `alias` and `package` fields to the `rule` stanza. This is the
  preferred way of attaching rules to aliases. (ocaml/dune#2744, @rgrinberg)

- Add field `(optional)` for executable stanzas (ocaml/dune#2463, fixes ocaml/dune#2433, @bobot)

- Infer targets for rule stanzas expressed in long form (ocaml/dune#2494, fixes ocaml/dune#2469,
  @NathanReb)

- Indicate the progress of the initial file tree loading (ocaml/dune#2459, fixes ocaml/dune#2374,
  @bobot)

- Build `.cm[ox]` files for executables more eagerly. This speeds up builds at
  the cost of building unnecessary artifacts in some cases. Some of these extra
  artifacts can fail to built, so this is a breaking change. (ocaml/dune#2268, @rgrinberg)

- Do not put the `<package>.install` files in the source tree unless `-p` or
  `--promote-install-files` is passed on the command line (ocaml/dune#2329, @diml)

- Change `implicit_transive_deps` to be false. Implicit transitive deps now must
  be manually enabled (ocaml/dune#2306, @rgrinberg)

- Compilation units of user defined executables are now mangled by default. This
  is done to prevent the accidental collision with library dependencies of the
  executable. (ocaml/dune#2364, fixes ocaml/dune#2292, @rgrinberg)

- Enable `(explicit_js_mode)` by default. (ocaml/dune#1941, @nojb)

- Add an option to clear the console in-between builds with
 `--terminal-persistence=clear-on-rebuild`

- Stop symlinking object files to main directory for stanzas defined `jbuild`
  files (ocaml/dune#2440, @rgrinberg)

- Library names are now validated in a strict fashion. Previously, invalid names
  would be allowed for unwrapped libraries (ocaml/dune#2442, @rgrinberg)

- mli only modules must now be explicitly declared. This was previously a
  warning and is now an error. (ocaml/dune#2442, @rgrinberg)

- Modules filtered out from the module list via the Ordered Set Language must
  now be actual modules. (ocaml/dune#2442, @rgrinberg)

- Actions which introduce targets where new targets are forbidden (e.g.
  preprocessing) are now an error instead of a warning. (ocaml/dune#2442, @rgrinberg)

- No longer install a `jbuilder` binary. (ocaml/dune#2441, @diml)

- Stub names are no longer allowed relative paths. This was previously a warning
  and is now an error (ocaml/dune#2443, @rgrinberg).

- Define (paths ...) fields in (context ...) definitions in order to set or
  extend any PATH-like variable in the context environment. (ocaml/dune#2426, @nojb)

- The `diff` action will always normalize newlines before diffing. Perviousy, it
  would not do this normalization for rules defined in jbuild files. (ocaml/dune#2457,
  @rgrinberg)

- Modules may no longer belong to more than one stanza. This was previously
  allowed only in stanzas defined in `jbuild` files. (ocaml/dune#2458, @rgrinberg)

- Remove support for `jbuild-ignore` files. They have been replaced by the the
  `dirs` stanza in `dune` files. (ocaml/dune#2456, @rgrinberg)

- Add a new config option `sandboxing_preference`, the cli argument `--sandbox`,
  and the dep spec `sandbox` in dune language. These let the user control the level of
  sandboxing done by dune per rule and globally. The rule specification takes precedence.
  The global configuration merely specifies the default.
  (ocaml/dune#2213, @aalekseyev, @diml)

- Remove support for old style subsystems. Dune will now emit a warning to
  reinstall the library with the old style subsystem. (ocaml/dune#2480, @rgrinberg)

- Add action (with-stdin-from <file> <action>) to redirect input from <file>
  when performing <action>. (ocaml/dune#2487, @nojb)

- Change the automatically generated odoc index to only list public modules.
  This only affects unwrapped libraries (ocaml/dune#2479, @rgrinberg)

- Set up formatting rules by default. They can be configured through a new
  `(formatting)` stanza in `dune-project` (ocaml/dune#2347, fixes ocaml/dune#2315, @emillon)

- Change default target from `@install` to `@all`. (ocaml/dune#2449, fixes ocaml/dune#1220,
  @rgrinberg)

- Include building stubs in `@check` rules. (@rgrinberg, ocaml/dune#2530)

- Get rid of ad-hoc rules for guessing the version. Dune now only
  relies on the version written in the `dune-project` file and no
  longer read `VERSION` or similar files (ocaml/dune#2541, @diml)

- In `(diff? x y)` action, require `x` to exist and register a
  dependency on that file. (ocaml/dune#2486, @aalekseyev)

- On Windows, an .exe suffix is no longer added implicitly to binary names that
  already end in .exe. Second, when resolving binary names, .opt variants are no
  longer chosen automatically. (ocaml/dune#2543, @nojb)

- Make `(diff? x y)` move the correction file (`y`) away from the build
  directory to promotion staging area. This makes corrections work with
  sandboxing and in general reduces build directory pollution. (ocaml/dune#2486,
  @aalekseyev, fixes ocaml/dune#2482)

- `c_flags`, `c_names` and `cxx_names` are now supported in `executable`
  and `executables` stanzas. (ocaml/dune#2562, @nojb)
  Note: this feature has been subsequently extended into a separate
  `foreign_stubs` field. (ocaml/dune#2659, RFC ocaml/dune#2650, @snowleopard)

- Remove git integration from `$ dune upgrade` (ocaml/dune#2565, @rgrinberg)

- Add a `--disable-promotion` to disable all modification to the source
  directory. There's also a corresponding `DUNE_DISABLE_PROMOTION` environment
  variable. (ocaml/dune#2588, fix ocaml/dune#2568, @rgrinberg)

- Add a `forbidden_libraries` field to prevent some library from being
  linked in an executable. This help detecting who accidently pulls in
  `unix` for instance (ocaml/dune#2570, @diml)

- Fix incorrect error message when a variable is expanded in static context:
  `%{lib:lib:..}` when the library does not exist. (ocaml/dune#2597, fix ocaml/dune#1541,
  @rgrinberg)

- Add `--sections` option to `$ dune install` to install subsections of .install
  files. This is useful for installing only the binaries in a workspace for
  example. (ocaml/dune#2609, fixes ocaml/dune#2554, @rgrinberg)

- Drop support for `jbuild` and `jbuild-ignore` files (ocaml/dune#2607, @diml)

- Add a `dune-action-plugin` library for describing dependencies direcly in
  the executable source. Programs that use this feature can be run by a new
  action (dynamic-run <progn> ...). (ocaml/dune#2635, @staronj, @aalekseyev)

- Stop installing the `ocaml-syntax-shims` binary. In order to use
  `future_syntax`, one now need to depend on the `ocaml-syntax-shims`
  package (ocaml/dune#2654, @diml)

- Add support for dependencies that are re-exported. Such dependencies
  are marked with`re_export` and will automatically be provided to
  users of a library (ocaml/dune#2605, @rgrinberg)

- Add a `deprecated_library_name` stanza to redirect old names after a
  library has been renamed (ocaml/dune#2528, @diml)

- Error out when a `preprocessor_deps` field is present but not
  `preprocess` field is. It is a warning with Dune 1.x projects
  (ocaml/dune#2660, @Julow)

- Dune will use `-output-complete-exe` instead of `-custom` when compiling
  self-contained bytecode executables whenever this options is available
  (OCaml version >= 4.10) (ocaml/dune#2692, @nojb)

- Add action `(with-accepted-exit-codes <pred> <action>)` to specify the set of
  successful exit codes of `<action>`. `<pred>` is specified using the predicate
  language. (ocaml/dune#2699, @nojb)

- Do not setup rules for disabled libraries (ocaml/dune#2491, fixes ocaml/dune#2272, @bobot)

- Configurator: filter out empty flags from `pkg-config` (ocaml/dune#2716, @AltGr)

- `no_keep_locs` is a no-op for projects that use `lang dune` older than 2.0. In
  projects where the language is at least `2.0`, the field is now forbidden.
  (ocaml/dune#2752, fixes ocaml/dune#2747, @rgrinberg)

- Extend support for foreign sources and archives via the `(foreign_library ...)`
  stanza as well as the `(foreign_stubs ...)` and `(foreign_archives ...)` fields.
  (ocaml/dune#2659, RFC ocaml/dune#2650, @snowleopard)

- Add (deprecated_package_names) field to (package) declaration in
  dune-project. The names declared here can be used in the (old_public_name)
  field of (deprecated_library_name) stanza. These names are interpreted as
  library names (not prefixed by a package name) and appropiate redirections are
  setup in their META files. This feaure is meant to migrate old libraries which
  do not follow Dune's convention of prefixing libraries with the package
  name. (ocaml/dune#2696, @nojb)

- The fields `license`, `authors`, `maintainers`, `source`, `bug_reports`,
  `homepage`, and `documentation` of `dune-project` can now be overriden on a
  per-package basis. (ocaml/dune#2774, @nojb)
rgrinberg added a commit to rgrinberg/opam-repository that referenced this pull request Oct 31, 2019
…lugin, dune-private-libs and dune-glob (2.0.0+draft1)

CHANGES:

- Introduce `alias` and `package` fields to the `rule` stanza. This is the
  preferred way of attaching rules to aliases. (ocaml/dune#2744, @rgrinberg)

- Add field `(optional)` for executable stanzas (ocaml/dune#2463, fixes ocaml/dune#2433, @bobot)

- Infer targets for rule stanzas expressed in long form (ocaml/dune#2494, fixes ocaml/dune#2469,
  @NathanReb)

- Indicate the progress of the initial file tree loading (ocaml/dune#2459, fixes ocaml/dune#2374,
  @bobot)

- Build `.cm[ox]` files for executables more eagerly. This speeds up builds at
  the cost of building unnecessary artifacts in some cases. Some of these extra
  artifacts can fail to built, so this is a breaking change. (ocaml/dune#2268, @rgrinberg)

- Do not put the `<package>.install` files in the source tree unless `-p` or
  `--promote-install-files` is passed on the command line (ocaml/dune#2329, @diml)

- Change `implicit_transive_deps` to be false. Implicit transitive deps now must
  be manually enabled (ocaml/dune#2306, @rgrinberg)

- Compilation units of user defined executables are now mangled by default. This
  is done to prevent the accidental collision with library dependencies of the
  executable. (ocaml/dune#2364, fixes ocaml/dune#2292, @rgrinberg)

- Enable `(explicit_js_mode)` by default. (ocaml/dune#1941, @nojb)

- Add an option to clear the console in-between builds with
 `--terminal-persistence=clear-on-rebuild`

- Stop symlinking object files to main directory for stanzas defined `jbuild`
  files (ocaml/dune#2440, @rgrinberg)

- Library names are now validated in a strict fashion. Previously, invalid names
  would be allowed for unwrapped libraries (ocaml/dune#2442, @rgrinberg)

- mli only modules must now be explicitly declared. This was previously a
  warning and is now an error. (ocaml/dune#2442, @rgrinberg)

- Modules filtered out from the module list via the Ordered Set Language must
  now be actual modules. (ocaml/dune#2442, @rgrinberg)

- Actions which introduce targets where new targets are forbidden (e.g.
  preprocessing) are now an error instead of a warning. (ocaml/dune#2442, @rgrinberg)

- No longer install a `jbuilder` binary. (ocaml/dune#2441, @diml)

- Stub names are no longer allowed relative paths. This was previously a warning
  and is now an error (ocaml/dune#2443, @rgrinberg).

- Define (paths ...) fields in (context ...) definitions in order to set or
  extend any PATH-like variable in the context environment. (ocaml/dune#2426, @nojb)

- The `diff` action will always normalize newlines before diffing. Perviousy, it
  would not do this normalization for rules defined in jbuild files. (ocaml/dune#2457,
  @rgrinberg)

- Modules may no longer belong to more than one stanza. This was previously
  allowed only in stanzas defined in `jbuild` files. (ocaml/dune#2458, @rgrinberg)

- Remove support for `jbuild-ignore` files. They have been replaced by the the
  `dirs` stanza in `dune` files. (ocaml/dune#2456, @rgrinberg)

- Add a new config option `sandboxing_preference`, the cli argument `--sandbox`,
  and the dep spec `sandbox` in dune language. These let the user control the level of
  sandboxing done by dune per rule and globally. The rule specification takes precedence.
  The global configuration merely specifies the default.
  (ocaml/dune#2213, @aalekseyev, @diml)

- Remove support for old style subsystems. Dune will now emit a warning to
  reinstall the library with the old style subsystem. (ocaml/dune#2480, @rgrinberg)

- Add action (with-stdin-from <file> <action>) to redirect input from <file>
  when performing <action>. (ocaml/dune#2487, @nojb)

- Change the automatically generated odoc index to only list public modules.
  This only affects unwrapped libraries (ocaml/dune#2479, @rgrinberg)

- Set up formatting rules by default. They can be configured through a new
  `(formatting)` stanza in `dune-project` (ocaml/dune#2347, fixes ocaml/dune#2315, @emillon)

- Change default target from `@install` to `@all`. (ocaml/dune#2449, fixes ocaml/dune#1220,
  @rgrinberg)

- Include building stubs in `@check` rules. (@rgrinberg, ocaml/dune#2530)

- Get rid of ad-hoc rules for guessing the version. Dune now only
  relies on the version written in the `dune-project` file and no
  longer read `VERSION` or similar files (ocaml/dune#2541, @diml)

- In `(diff? x y)` action, require `x` to exist and register a
  dependency on that file. (ocaml/dune#2486, @aalekseyev)

- On Windows, an .exe suffix is no longer added implicitly to binary names that
  already end in .exe. Second, when resolving binary names, .opt variants are no
  longer chosen automatically. (ocaml/dune#2543, @nojb)

- Make `(diff? x y)` move the correction file (`y`) away from the build
  directory to promotion staging area. This makes corrections work with
  sandboxing and in general reduces build directory pollution. (ocaml/dune#2486,
  @aalekseyev, fixes ocaml/dune#2482)

- `c_flags`, `c_names` and `cxx_names` are now supported in `executable`
  and `executables` stanzas. (ocaml/dune#2562, @nojb)
  Note: this feature has been subsequently extended into a separate
  `foreign_stubs` field. (ocaml/dune#2659, RFC ocaml/dune#2650, @snowleopard)

- Remove git integration from `$ dune upgrade` (ocaml/dune#2565, @rgrinberg)

- Add a `--disable-promotion` to disable all modification to the source
  directory. There's also a corresponding `DUNE_DISABLE_PROMOTION` environment
  variable. (ocaml/dune#2588, fix ocaml/dune#2568, @rgrinberg)

- Add a `forbidden_libraries` field to prevent some library from being
  linked in an executable. This help detecting who accidently pulls in
  `unix` for instance (ocaml/dune#2570, @diml)

- Fix incorrect error message when a variable is expanded in static context:
  `%{lib:lib:..}` when the library does not exist. (ocaml/dune#2597, fix ocaml/dune#1541,
  @rgrinberg)

- Add `--sections` option to `$ dune install` to install subsections of .install
  files. This is useful for installing only the binaries in a workspace for
  example. (ocaml/dune#2609, fixes ocaml/dune#2554, @rgrinberg)

- Drop support for `jbuild` and `jbuild-ignore` files (ocaml/dune#2607, @diml)

- Add a `dune-action-plugin` library for describing dependencies direcly in
  the executable source. Programs that use this feature can be run by a new
  action (dynamic-run <progn> ...). (ocaml/dune#2635, @staronj, @aalekseyev)

- Stop installing the `ocaml-syntax-shims` binary. In order to use
  `future_syntax`, one now need to depend on the `ocaml-syntax-shims`
  package (ocaml/dune#2654, @diml)

- Add support for dependencies that are re-exported. Such dependencies
  are marked with`re_export` and will automatically be provided to
  users of a library (ocaml/dune#2605, @rgrinberg)

- Add a `deprecated_library_name` stanza to redirect old names after a
  library has been renamed (ocaml/dune#2528, @diml)

- Error out when a `preprocessor_deps` field is present but not
  `preprocess` field is. It is a warning with Dune 1.x projects
  (ocaml/dune#2660, @Julow)

- Dune will use `-output-complete-exe` instead of `-custom` when compiling
  self-contained bytecode executables whenever this options is available
  (OCaml version >= 4.10) (ocaml/dune#2692, @nojb)

- Add action `(with-accepted-exit-codes <pred> <action>)` to specify the set of
  successful exit codes of `<action>`. `<pred>` is specified using the predicate
  language. (ocaml/dune#2699, @nojb)

- Do not setup rules for disabled libraries (ocaml/dune#2491, fixes ocaml/dune#2272, @bobot)

- Configurator: filter out empty flags from `pkg-config` (ocaml/dune#2716, @AltGr)

- `no_keep_locs` is a no-op for projects that use `lang dune` older than 2.0. In
  projects where the language is at least `2.0`, the field is now forbidden.
  (ocaml/dune#2752, fixes ocaml/dune#2747, @rgrinberg)

- Extend support for foreign sources and archives via the `(foreign_library ...)`
  stanza as well as the `(foreign_stubs ...)` and `(foreign_archives ...)` fields.
  (ocaml/dune#2659, RFC ocaml/dune#2650, @snowleopard)

- Add (deprecated_package_names) field to (package) declaration in
  dune-project. The names declared here can be used in the (old_public_name)
  field of (deprecated_library_name) stanza. These names are interpreted as
  library names (not prefixed by a package name) and appropiate redirections are
  setup in their META files. This feaure is meant to migrate old libraries which
  do not follow Dune's convention of prefixing libraries with the package
  name. (ocaml/dune#2696, @nojb)

- The fields `license`, `authors`, `maintainers`, `source`, `bug_reports`,
  `homepage`, and `documentation` of `dune-project` can now be overriden on a
  per-package basis. (ocaml/dune#2774, @nojb)
rgrinberg added a commit to rgrinberg/opam-repository that referenced this pull request Nov 12, 2019
…lugin, dune-private-libs and dune-glob (2.0.0+draft2)

CHANGES:

- The `action` field in the `alias` stanza is not available starting `lang dune
  2.0`. The `alias` field in the `rule` stanza is a replacement. (ocaml/dune#2846, fixes
  2681, @rgrinberg)

- Introduce `alias` and `package` fields to the `rule` stanza. This is the
  preferred way of attaching rules to aliases. (ocaml/dune#2744, @rgrinberg)

- Add field `(optional)` for executable stanzas (ocaml/dune#2463, fixes ocaml/dune#2433, @bobot)

- Infer targets for rule stanzas expressed in long form (ocaml/dune#2494, fixes ocaml/dune#2469,
  @NathanReb)

- Indicate the progress of the initial file tree loading (ocaml/dune#2459, fixes ocaml/dune#2374,
  @bobot)

- Build `.cm[ox]` files for executables more eagerly. This speeds up builds at
  the cost of building unnecessary artifacts in some cases. Some of these extra
  artifacts can fail to built, so this is a breaking change. (ocaml/dune#2268, @rgrinberg)

- Do not put the `<package>.install` files in the source tree unless `-p` or
  `--promote-install-files` is passed on the command line (ocaml/dune#2329, @diml)

- Change `implicit_transive_deps` to be false. Implicit transitive deps now must
  be manually enabled (ocaml/dune#2306, @rgrinberg)

- Compilation units of user defined executables are now mangled by default. This
  is done to prevent the accidental collision with library dependencies of the
  executable. (ocaml/dune#2364, fixes ocaml/dune#2292, @rgrinberg)

- Enable `(explicit_js_mode)` by default. (ocaml/dune#1941, @nojb)

- Add an option to clear the console in-between builds with
 `--terminal-persistence=clear-on-rebuild`

- Stop symlinking object files to main directory for stanzas defined `jbuild`
  files (ocaml/dune#2440, @rgrinberg)

- Library names are now validated in a strict fashion. Previously, invalid names
  would be allowed for unwrapped libraries (ocaml/dune#2442, @rgrinberg)

- mli only modules must now be explicitly declared. This was previously a
  warning and is now an error. (ocaml/dune#2442, @rgrinberg)

- Modules filtered out from the module list via the Ordered Set Language must
  now be actual modules. (ocaml/dune#2442, @rgrinberg)

- Actions which introduce targets where new targets are forbidden (e.g.
  preprocessing) are now an error instead of a warning. (ocaml/dune#2442, @rgrinberg)

- No longer install a `jbuilder` binary. (ocaml/dune#2441, @diml)

- Stub names are no longer allowed relative paths. This was previously a warning
  and is now an error (ocaml/dune#2443, @rgrinberg).

- Define (paths ...) fields in (context ...) definitions in order to set or
  extend any PATH-like variable in the context environment. (ocaml/dune#2426, @nojb)

- The `diff` action will always normalize newlines before diffing. Perviousy, it
  would not do this normalization for rules defined in jbuild files. (ocaml/dune#2457,
  @rgrinberg)

- Modules may no longer belong to more than one stanza. This was previously
  allowed only in stanzas defined in `jbuild` files. (ocaml/dune#2458, @rgrinberg)

- Remove support for `jbuild-ignore` files. They have been replaced by the the
  `dirs` stanza in `dune` files. (ocaml/dune#2456, @rgrinberg)

- Add a new config option `sandboxing_preference`, the cli argument `--sandbox`,
  and the dep spec `sandbox` in dune language. These let the user control the level of
  sandboxing done by dune per rule and globally. The rule specification takes precedence.
  The global configuration merely specifies the default.
  (ocaml/dune#2213, @aalekseyev, @diml)

- Remove support for old style subsystems. Dune will now emit a warning to
  reinstall the library with the old style subsystem. (ocaml/dune#2480, @rgrinberg)

- Add action (with-stdin-from <file> <action>) to redirect input from <file>
  when performing <action>. (ocaml/dune#2487, @nojb)

- Change the automatically generated odoc index to only list public modules.
  This only affects unwrapped libraries (ocaml/dune#2479, @rgrinberg)

- Set up formatting rules by default. They can be configured through a new
  `(formatting)` stanza in `dune-project` (ocaml/dune#2347, fixes ocaml/dune#2315, @emillon)

- Change default target from `@install` to `@all`. (ocaml/dune#2449, fixes ocaml/dune#1220,
  @rgrinberg)

- Include building stubs in `@check` rules. (@rgrinberg, ocaml/dune#2530)

- Get rid of ad-hoc rules for guessing the version. Dune now only
  relies on the version written in the `dune-project` file and no
  longer read `VERSION` or similar files (ocaml/dune#2541, @diml)

- In `(diff? x y)` action, require `x` to exist and register a
  dependency on that file. (ocaml/dune#2486, @aalekseyev)

- On Windows, an .exe suffix is no longer added implicitly to binary names that
  already end in .exe. Second, when resolving binary names, .opt variants are no
  longer chosen automatically. (ocaml/dune#2543, @nojb)

- Make `(diff? x y)` move the correction file (`y`) away from the build
  directory to promotion staging area. This makes corrections work with
  sandboxing and in general reduces build directory pollution. (ocaml/dune#2486,
  @aalekseyev, fixes ocaml/dune#2482)

- `c_flags`, `c_names` and `cxx_names` are now supported in `executable`
  and `executables` stanzas. (ocaml/dune#2562, @nojb)
  Note: this feature has been subsequently extended into a separate
  `foreign_stubs` field. (ocaml/dune#2659, RFC ocaml/dune#2650, @snowleopard)

- Remove git integration from `$ dune upgrade` (ocaml/dune#2565, @rgrinberg)

- Add a `--disable-promotion` to disable all modification to the source
  directory. There's also a corresponding `DUNE_DISABLE_PROMOTION` environment
  variable. (ocaml/dune#2588, fix ocaml/dune#2568, @rgrinberg)

- Add a `forbidden_libraries` field to prevent some library from being
  linked in an executable. This help detecting who accidently pulls in
  `unix` for instance (ocaml/dune#2570, @diml)

- Fix incorrect error message when a variable is expanded in static context:
  `%{lib:lib:..}` when the library does not exist. (ocaml/dune#2597, fix ocaml/dune#1541,
  @rgrinberg)

- Add `--sections` option to `$ dune install` to install subsections of .install
  files. This is useful for installing only the binaries in a workspace for
  example. (ocaml/dune#2609, fixes ocaml/dune#2554, @rgrinberg)

- Drop support for `jbuild` and `jbuild-ignore` files (ocaml/dune#2607, @diml)

- Add a `dune-action-plugin` library for describing dependencies direcly in
  the executable source. Programs that use this feature can be run by a new
  action (dynamic-run <progn> ...). (ocaml/dune#2635, @staronj, @aalekseyev)

- Stop installing the `ocaml-syntax-shims` binary. In order to use
  `future_syntax`, one now need to depend on the `ocaml-syntax-shims`
  package (ocaml/dune#2654, @diml)

- Add support for dependencies that are re-exported. Such dependencies
  are marked with`re_export` and will automatically be provided to
  users of a library (ocaml/dune#2605, @rgrinberg)

- Add a `deprecated_library_name` stanza to redirect old names after a
  library has been renamed (ocaml/dune#2528, @diml)

- Error out when a `preprocessor_deps` field is present but not
  `preprocess` field is. It is a warning with Dune 1.x projects
  (ocaml/dune#2660, @Julow)

- Dune will use `-output-complete-exe` instead of `-custom` when compiling
  self-contained bytecode executables whenever this options is available
  (OCaml version >= 4.10) (ocaml/dune#2692, @nojb)

- Add action `(with-accepted-exit-codes <pred> <action>)` to specify the set of
  successful exit codes of `<action>`. `<pred>` is specified using the predicate
  language. (ocaml/dune#2699, @nojb)

- Do not setup rules for disabled libraries (ocaml/dune#2491, fixes ocaml/dune#2272, @bobot)

- Configurator: filter out empty flags from `pkg-config` (ocaml/dune#2716, @AltGr)

- `no_keep_locs` is a no-op for projects that use `lang dune` older than 2.0. In
  projects where the language is at least `2.0`, the field is now forbidden.
  (ocaml/dune#2752, fixes ocaml/dune#2747, @rgrinberg)

- Extend support for foreign sources and archives via the `(foreign_library ...)`
  stanza as well as the `(foreign_stubs ...)` and `(foreign_archives ...)` fields.
  (ocaml/dune#2659, RFC ocaml/dune#2650, @snowleopard)

- Add (deprecated_package_names) field to (package) declaration in
  dune-project. The names declared here can be used in the (old_public_name)
  field of (deprecated_library_name) stanza. These names are interpreted as
  library names (not prefixed by a package name) and appropiate redirections are
  setup in their META files. This feaure is meant to migrate old libraries which
  do not follow Dune's convention of prefixing libraries with the package
  name. (ocaml/dune#2696, @nojb)

- The fields `license`, `authors`, `maintainers`, `source`, `bug_reports`,
  `homepage`, and `documentation` of `dune-project` can now be overriden on a
  per-package basis. (ocaml/dune#2774, @nojb)

- Change the default `modes` field of executables to `(mode exe)`. If
  one wants to build a bytecode program, it now needs to be explicitly
  requested via `(modes byte exe)`. (ocaml/dune#2851, @diml)

- Allow `ccomp_type` as a variable for evaluating `enabled_if`. (ocaml/dune#2855, @dra27,
  @rgrinberg)

- Stricter validation of file names in `select`. The file names of conditional
  sources must match the prefix and the extension of the resultant filename.
  (ocaml/dune#2867, @rgrinberg)

- Add flag `disable_dynamically_linked_foreign_archives` to the workspace file.
  If the flag is set to `true` then: (i) when installing libraries, we do not
  install dynamic foreign archives `dll*.so`; (ii) when building executables in
  the `byte` mode, we statically link in foreign archives into the runtime
  system; (iii) we do not generate any `dll*.so` rules. (ocaml/dune#2864, @snowleopard)

- Reimplement the bootstrap procedure. The new procedure is faster and
  should no longer stack overflow (ocaml/dune#2854, @dra27, @diml)
rgrinberg added a commit to rgrinberg/opam-repository that referenced this pull request Nov 20, 2019
…lugin, dune-private-libs and dune-glob (2.0.0)

CHANGES:

- Remove existing destination files in `install`  before installing the new
  ones. (ocaml/dune#2885, fixes ocaml/dune#2883, @bschommer)

- The `action` field in the `alias` stanza is not available starting `lang dune
  2.0`. The `alias` field in the `rule` stanza is a replacement. (ocaml/dune#2846, fixes
  2681, @rgrinberg)

- Introduce `alias` and `package` fields to the `rule` stanza. This is the
  preferred way of attaching rules to aliases. (ocaml/dune#2744, @rgrinberg)

- Add field `(optional)` for executable stanzas (ocaml/dune#2463, fixes ocaml/dune#2433, @bobot)

- Infer targets for rule stanzas expressed in long form (ocaml/dune#2494, fixes ocaml/dune#2469,
  @NathanReb)

- Indicate the progress of the initial file tree loading (ocaml/dune#2459, fixes ocaml/dune#2374,
  @bobot)

- Build `.cm[ox]` files for executables more eagerly. This speeds up builds at
  the cost of building unnecessary artifacts in some cases. Some of these extra
  artifacts can fail to built, so this is a breaking change. (ocaml/dune#2268, @rgrinberg)

- Do not put the `<package>.install` files in the source tree unless `-p` or
  `--promote-install-files` is passed on the command line (ocaml/dune#2329, @diml)

- Compilation units of user defined executables are now mangled by default. This
  is done to prevent the accidental collision with library dependencies of the
  executable. (ocaml/dune#2364, fixes ocaml/dune#2292, @rgrinberg)

- Enable `(explicit_js_mode)` by default. (ocaml/dune#1941, @nojb)

- Add an option to clear the console in-between builds with
 `--terminal-persistence=clear-on-rebuild`

- Stop symlinking object files to main directory for stanzas defined `jbuild`
  files (ocaml/dune#2440, @rgrinberg)

- Library names are now validated in a strict fashion. Previously, invalid names
  would be allowed for unwrapped libraries (ocaml/dune#2442, @rgrinberg)

- mli only modules must now be explicitly declared. This was previously a
  warning and is now an error. (ocaml/dune#2442, @rgrinberg)

- Modules filtered out from the module list via the Ordered Set Language must
  now be actual modules. (ocaml/dune#2442, @rgrinberg)

- Actions which introduce targets where new targets are forbidden (e.g.
  preprocessing) are now an error instead of a warning. (ocaml/dune#2442, @rgrinberg)

- No longer install a `jbuilder` binary. (ocaml/dune#2441, @diml)

- Stub names are no longer allowed relative paths. This was previously a warning
  and is now an error (ocaml/dune#2443, @rgrinberg).

- Define (paths ...) fields in (context ...) definitions in order to set or
  extend any PATH-like variable in the context environment. (ocaml/dune#2426, @nojb)

- The `diff` action will always normalize newlines before diffing. Perviousy, it
  would not do this normalization for rules defined in jbuild files. (ocaml/dune#2457,
  @rgrinberg)

- Modules may no longer belong to more than one stanza. This was previously
  allowed only in stanzas defined in `jbuild` files. (ocaml/dune#2458, @rgrinberg)

- Remove support for `jbuild-ignore` files. They have been replaced by the the
  `dirs` stanza in `dune` files. (ocaml/dune#2456, @rgrinberg)

- Add a new config option `sandboxing_preference`, the cli argument `--sandbox`,
  and the dep spec `sandbox` in dune language. These let the user control the level of
  sandboxing done by dune per rule and globally. The rule specification takes precedence.
  The global configuration merely specifies the default.
  (ocaml/dune#2213, @aalekseyev, @diml)

- Remove support for old style subsystems. Dune will now emit a warning to
  reinstall the library with the old style subsystem. (ocaml/dune#2480, @rgrinberg)

- Add action (with-stdin-from <file> <action>) to redirect input from <file>
  when performing <action>. (ocaml/dune#2487, @nojb)

- Change the automatically generated odoc index to only list public modules.
  This only affects unwrapped libraries (ocaml/dune#2479, @rgrinberg)

- Set up formatting rules by default. They can be configured through a new
  `(formatting)` stanza in `dune-project` (ocaml/dune#2347, fixes ocaml/dune#2315, @emillon)

- Change default target from `@install` to `@all`. (ocaml/dune#2449, fixes ocaml/dune#1220,
  @rgrinberg)

- Include building stubs in `@check` rules. (@rgrinberg, ocaml/dune#2530)

- Get rid of ad-hoc rules for guessing the version. Dune now only
  relies on the version written in the `dune-project` file and no
  longer read `VERSION` or similar files (ocaml/dune#2541, @diml)

- In `(diff? x y)` action, require `x` to exist and register a
  dependency on that file. (ocaml/dune#2486, @aalekseyev)

- On Windows, an .exe suffix is no longer added implicitly to binary names that
  already end in .exe. Second, when resolving binary names, .opt variants are no
  longer chosen automatically. (ocaml/dune#2543, @nojb)

- Make `(diff? x y)` move the correction file (`y`) away from the build
  directory to promotion staging area. This makes corrections work with
  sandboxing and in general reduces build directory pollution. (ocaml/dune#2486,
  @aalekseyev, fixes ocaml/dune#2482)

- `c_flags`, `c_names` and `cxx_names` are now supported in `executable`
  and `executables` stanzas. (ocaml/dune#2562, @nojb)
  Note: this feature has been subsequently extended into a separate
  `foreign_stubs` field. (ocaml/dune#2659, RFC ocaml/dune#2650, @snowleopard)

- Remove git integration from `$ dune upgrade` (ocaml/dune#2565, @rgrinberg)

- Add a `--disable-promotion` to disable all modification to the source
  directory. There's also a corresponding `DUNE_DISABLE_PROMOTION` environment
  variable. (ocaml/dune#2588, fix ocaml/dune#2568, @rgrinberg)

- Add a `forbidden_libraries` field to prevent some library from being
  linked in an executable. This help detecting who accidently pulls in
  `unix` for instance (ocaml/dune#2570, @diml)

- Fix incorrect error message when a variable is expanded in static context:
  `%{lib:lib:..}` when the library does not exist. (ocaml/dune#2597, fix ocaml/dune#1541,
  @rgrinberg)

- Add `--sections` option to `$ dune install` to install subsections of .install
  files. This is useful for installing only the binaries in a workspace for
  example. (ocaml/dune#2609, fixes ocaml/dune#2554, @rgrinberg)

- Drop support for `jbuild` and `jbuild-ignore` files (ocaml/dune#2607, @diml)

- Add a `dune-action-plugin` library for describing dependencies direcly in
  the executable source. Programs that use this feature can be run by a new
  action (dynamic-run <progn> ...). (ocaml/dune#2635, @staronj, @aalekseyev)

- Stop installing the `ocaml-syntax-shims` binary. In order to use
  `future_syntax`, one now need to depend on the `ocaml-syntax-shims`
  package (ocaml/dune#2654, @diml)

- Add support for dependencies that are re-exported. Such dependencies
  are marked with`re_export` and will automatically be provided to
  users of a library (ocaml/dune#2605, @rgrinberg)

- Add a `deprecated_library_name` stanza to redirect old names after a
  library has been renamed (ocaml/dune#2528, @diml)

- Error out when a `preprocessor_deps` field is present but not
  `preprocess` field is. It is a warning with Dune 1.x projects
  (ocaml/dune#2660, @Julow)

- Dune will use `-output-complete-exe` instead of `-custom` when compiling
  self-contained bytecode executables whenever this options is available
  (OCaml version >= 4.10) (ocaml/dune#2692, @nojb)

- Add action `(with-accepted-exit-codes <pred> <action>)` to specify the set of
  successful exit codes of `<action>`. `<pred>` is specified using the predicate
  language. (ocaml/dune#2699, @nojb)

- Do not setup rules for disabled libraries (ocaml/dune#2491, fixes ocaml/dune#2272, @bobot)

- Configurator: filter out empty flags from `pkg-config` (ocaml/dune#2716, @AltGr)

- `no_keep_locs` is a no-op for projects that use `lang dune` older than 2.0. In
  projects where the language is at least `2.0`, the field is now forbidden.
  (ocaml/dune#2752, fixes ocaml/dune#2747, @rgrinberg)

- Extend support for foreign sources and archives via the `(foreign_library ...)`
  stanza as well as the `(foreign_stubs ...)` and `(foreign_archives ...)` fields.
  (ocaml/dune#2659, RFC ocaml/dune#2650, @snowleopard)

- Add (deprecated_package_names) field to (package) declaration in
  dune-project. The names declared here can be used in the (old_public_name)
  field of (deprecated_library_name) stanza. These names are interpreted as
  library names (not prefixed by a package name) and appropiate redirections are
  setup in their META files. This feaure is meant to migrate old libraries which
  do not follow Dune's convention of prefixing libraries with the package
  name. (ocaml/dune#2696, @nojb)

- The fields `license`, `authors`, `maintainers`, `source`, `bug_reports`,
  `homepage`, and `documentation` of `dune-project` can now be overriden on a
  per-package basis. (ocaml/dune#2774, @nojb)

- Change the default `modes` field of executables to `(mode exe)`. If
  one wants to build a bytecode program, it now needs to be explicitly
  requested via `(modes byte exe)`. (ocaml/dune#2851, @diml)

- Allow `ccomp_type` as a variable for evaluating `enabled_if`. (ocaml/dune#2855, @dra27,
  @rgrinberg)

- Stricter validation of file names in `select`. The file names of conditional
  sources must match the prefix and the extension of the resultant filename.
  (ocaml/dune#2867, @rgrinberg)

- Add flag `disable_dynamically_linked_foreign_archives` to the workspace file.
  If the flag is set to `true` then: (i) when installing libraries, we do not
  install dynamic foreign archives `dll*.so`; (ii) when building executables in
  the `byte` mode, we statically link in foreign archives into the runtime
  system; (iii) we do not generate any `dll*.so` rules. (ocaml/dune#2864, @snowleopard)

- Reimplement the bootstrap procedure. The new procedure is faster and
  should no longer stack overflow (ocaml/dune#2854, @dra27, @diml)

- Allow `.opam.template` files to be generated using rules (ocaml/dune#2866, @rgrinberg)
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