Create bzl_library entries using gazelle-skylark

There are a few minor manual modifications that needed to be performed.
For example, some `.bzl` files depend on `.bzl` files that are generated
outside of this repo and do not presently exist. `@bazel_tools` is a
great example of this.

Additionally this effort has revealed that bazel gazelle has an explicit
dependency on the private parts of rules_go in
internal/gazelle_binary.bzl on line 21 where it imports from
`go/private:rules/transitions.bzl` which is no longer the path to import
from once I created the BUILD file in `go/private/rules`.

As a temporary fix for this, I'm included a patch that changes that to
point to the new path. I will provide a follow up patch once rules_go
has been released to fix it properly in the gazelle repo and then remove
the patch from rules_go.

Fixed: bazel-contrib#2619
Bug: bazelbuild/bazel-skylib#250
Bug: bazel-contrib/bazel-gazelle#803

BUILD.bazel

@@ -1,13 +1,13 @@
 load(
-    "@io_bazel_rules_go//go/private:tools/lines_sorted_test.bzl",
+    "@io_bazel_rules_go//go/private/tools:lines_sorted_test.bzl",
     "lines_sorted_test",
 )
 load(
-    "@io_bazel_rules_go//go/private:rules/nogo.bzl",
+    "@io_bazel_rules_go//go/private/rules:nogo.bzl",
     "nogo",
 )
 load(
-    "@io_bazel_rules_go//go/private:rules/info.bzl",
+    "@io_bazel_rules_go//go/private/rules:info.bzl",
     "go_info",
 )
 load(
@@ -22,7 +22,7 @@ load(
     "go_context_data",
 )
 load(
-    "@io_bazel_rules_go//go/private:rules/stdlib.bzl",
+    "@io_bazel_rules_go//go/private/rules:stdlib.bzl",
     "stdlib",
 )
 

WORKSPACE

@@ -89,6 +89,9 @@ bazel_skylib_workspace()
 
 http_archive(
     name = "bazel_gazelle",
+    patches = [
+        "//third_party:com_google_github_bazel_gazelle-internal-in-their-new-location.patch",
+    ],
     sha256 = "d8c45ee70ec39a57e7a05e5027c32b1576cc7f16d9dd37135b0eddde45cf1b10",
     urls = [
         "https://mirror.bazel.build/github.com/bazelbuild/bazel-gazelle/releases/download/v0.20.0/bazel-gazelle-v0.20.0.tar.gz",

extras/BUILD.bazel

@@ -1,3 +1,5 @@
+load("@bazel_skylib//:bzl_library.bzl", "bzl_library")
+
 filegroup(
     name = "all_rules",
     srcs = glob(["*.bzl"]) + ["//go/private:all_rules"],
@@ -10,3 +12,32 @@ filegroup(
     srcs = glob(["**"]),
     visibility = ["//visibility:public"],
 )
+
+bzl_library(
+    name = "bindata",
+    srcs = ["bindata.bzl"],
+    visibility = ["//visibility:public"],
+    deps = [
+        "@io_bazel_rules_go//go:def",
+        "@io_bazel_rules_go//go/private/rules:rule",
+    ],
+)
+
+bzl_library(
+    name = "embed_data",
+    srcs = ["embed_data.bzl"],
+    visibility = ["//visibility:public"],
+    deps = [
+        "@io_bazel_rules_go//go/private:context",
+        "@io_bazel_rules_go//go/private/rules:rule",
+    ],
+)
+
+bzl_library(
+    name = "embed_data_deps",
+    srcs = ["embed_data_deps.bzl"],
+    visibility = ["//visibility:public"],
+    deps = [
+        #"@bazel_tools//tools/build_defs/repo:git",
+    ],
+)

extras/bindata.bzl

@@ -19,7 +19,7 @@ load(
     "go_context",
 )
 load(
-    "@io_bazel_rules_go//go/private:rules/rule.bzl",
+    "@io_bazel_rules_go//go/private/rules:rule.bzl",
     "go_rule",
 )
 

extras/embed_data.bzl

@@ -19,7 +19,7 @@ load(
     "go_context",
 )
 load(
-    "@io_bazel_rules_go//go/private:rules/rule.bzl",
+    "@io_bazel_rules_go//go/private/rules:rule.bzl",
     "go_rule",
 )
 

go/BUILD.bazel

@@ -1,3 +1,5 @@
+load("@bazel_skylib//:bzl_library.bzl", "bzl_library")
+
 filegroup(
     name = "all_files",
     testonly = True,
@@ -25,3 +27,32 @@ toolchain_type(
     name = "toolchain",
     visibility = ["//visibility:public"],
 )
+
+bzl_library(
+    name = "def",
+    srcs = ["def.bzl"],
+    visibility = ["//visibility:public"],
+    deps = [
+        "@io_bazel_rules_go//extras:embed_data",
+        "@io_bazel_rules_go//go/private:context",
+        "@io_bazel_rules_go//go/private:go_toolchain",
+        "@io_bazel_rules_go//go/private:providers",
+        "@io_bazel_rules_go//go/private/rules:library",
+        "@io_bazel_rules_go//go/private/rules:nogo",
+        "@io_bazel_rules_go//go/private/rules:rule",
+        "@io_bazel_rules_go//go/private/rules:sdk",
+        "@io_bazel_rules_go//go/private/rules:source",
+        "@io_bazel_rules_go//go/private/rules:wrappers",
+        "@io_bazel_rules_go//go/private/tools:path",
+    ],
+)
+
+bzl_library(
+    name = "deps",
+    srcs = ["deps.bzl"],
+    visibility = ["//visibility:public"],
+    deps = [
+        "@io_bazel_rules_go//go/private:repositories",
+        "@io_bazel_rules_go//go/private:sdk",
+    ],
+)

go/def.bzl

@@ -36,7 +36,7 @@ load(
     _GoSource = "GoSource",
 )
 load(
-    "@io_bazel_rules_go//go/private:rules/sdk.bzl",
+    "@io_bazel_rules_go//go/private/rules:sdk.bzl",
     _go_sdk = "go_sdk",
 )
 load(
@@ -45,33 +45,33 @@ load(
     _go_toolchain = "go_toolchain",
 )
 load(
-    "@io_bazel_rules_go//go/private:rules/wrappers.bzl",
+    "@io_bazel_rules_go//go/private/rules:wrappers.bzl",
     _go_binary_macro = "go_binary_macro",
     _go_library_macro = "go_library_macro",
     _go_test_macro = "go_test_macro",
 )
 load(
-    "@io_bazel_rules_go//go/private:rules/source.bzl",
+    "@io_bazel_rules_go//go/private/rules:source.bzl",
     _go_source = "go_source",
 )
 load(
     "@io_bazel_rules_go//extras:embed_data.bzl",
     _go_embed_data = "go_embed_data",
 )
 load(
-    "@io_bazel_rules_go//go/private:tools/path.bzl",
+    "@io_bazel_rules_go//go/private/tools:path.bzl",
     _go_path = "go_path",
 )
 load(
-    "@io_bazel_rules_go//go/private:rules/rule.bzl",
+    "@io_bazel_rules_go//go/private/rules:rule.bzl",
     _go_rule = "go_rule",
 )
 load(
-    "@io_bazel_rules_go//go/private:rules/library.bzl",
+    "@io_bazel_rules_go//go/private/rules:library.bzl",
     _go_tool_library = "go_tool_library",
 )
 load(
-    "@io_bazel_rules_go//go/private:rules/nogo.bzl",
+    "@io_bazel_rules_go//go/private/rules:nogo.bzl",
     _nogo = "nogo_wrapper",
 )
 

go/platform/BUILD.bazel

@@ -1,3 +1,5 @@
+load("@bazel_skylib//:bzl_library.bzl", "bzl_library")
+
 # This file declares a config_setting for each platform supported by the
 # Go SDK. These rules follow a goos_goarch naming convention, for example,
 # //go/platform:linux_amd64
@@ -23,3 +25,14 @@ filegroup(
     srcs = glob(["**"]),
     visibility = ["//visibility:public"],
 )
+
+bzl_library(
+    name = "list",
+    srcs = ["list.bzl"],
+    deps = ["@io_bazel_rules_go//go/private:platforms"],
+)
+
+bzl_library(
+    name = "apple",
+    srcs = ["apple.bzl"],
+)

go/private/BUILD.bazel

@@ -1,3 +1,5 @@
+load("@bazel_skylib//:bzl_library.bzl", "bzl_library")
+
 filegroup(
     name = "all_rules",
     srcs = glob(["**/*.bzl"]),
@@ -30,3 +32,103 @@ config_setting(
     name = "stamp",
     values = {"stamp": "true"},
 )
+
+bzl_library(
+    name = "context",
+    srcs = ["context.bzl"],
+    visibility = [
+        "//extras:__pkg__",
+        "//go:__subpackages__",
+    ],
+    deps = [
+        "@bazel_skylib//lib:paths",
+        "@bazel_skylib//rules:common_settings",
+        #"@bazel_tools//tools/build_defs/cc:action_names",
+        #"@bazel_tools//tools/cpp:toolchain_utils",
+        "@io_bazel_rules_go//go/platform:apple",
+    ],
+)
+
+bzl_library(
+    name = "go_toolchain",
+    srcs = ["go_toolchain.bzl"],
+    visibility = ["//go:__subpackages__"],
+    deps = [
+        "@io_bazel_rules_go//go/private:platforms",
+        "@io_bazel_rules_go//go/private:providers",
+        "@io_bazel_rules_go//go/private/actions:archive",
+        "@io_bazel_rules_go//go/private/actions:asm",
+        "@io_bazel_rules_go//go/private/actions:binary",
+        "@io_bazel_rules_go//go/private/actions:compile",
+        "@io_bazel_rules_go//go/private/actions:cover",
+        "@io_bazel_rules_go//go/private/actions:link",
+        "@io_bazel_rules_go//go/private/actions:pack",
+        "@io_bazel_rules_go//go/private/actions:stdlib",
+    ],
+)
+
+bzl_library(
+    name = "repositories",
+    srcs = ["repositories.bzl"],
+    visibility = ["//go:__subpackages__"],
+    deps = [
+        #"@bazel_tools//tools/build_defs/repo:git",
+        #"@bazel_tools//tools/build_defs/repo:http",
+        "@io_bazel_rules_go//go/private:common",
+        "@io_bazel_rules_go//go/private:nogo",
+        "@io_bazel_rules_go//go/private/skylib/lib:versions",
+        "@io_bazel_rules_go//proto:gogo",
+    ],
+)
+
+bzl_library(
+    name = "sdk",
+    srcs = ["sdk.bzl"],
+    visibility = ["//go:__subpackages__"],
+    deps = [
+        "@io_bazel_rules_go//go/private:common",
+        "@io_bazel_rules_go//go/private:nogo",
+        "@io_bazel_rules_go//go/private:platforms",
+        "@io_bazel_rules_go//go/private:sdk_list",
+        "@io_bazel_rules_go//go/private/skylib/lib:versions",
+    ],
+)
+
+bzl_library(
+    name = "common",
+    srcs = ["common.bzl"],
+    visibility = ["//go:__subpackages__"],
+)
+
+bzl_library(
+    name = "mode",
+    srcs = ["mode.bzl"],
+    visibility = ["//go:__subpackages__"],
+)
+
+bzl_library(
+    name = "nogo",
+    srcs = ["nogo.bzl"],
+    visibility = ["//go:__subpackages__"],
+)
+
+bzl_library(
+    name = "platforms",
+    srcs = ["platforms.bzl"],
+    visibility = ["//go:__subpackages__"],
+)
+
+bzl_library(
+    name = "providers",
+    srcs = ["providers.bzl"],
+    visibility = [
+        "//go:__subpackages__",
+        "//proto:__pkg__",  # keep
+    ],
+)
+
+bzl_library(
+    name = "sdk_list",
+    srcs = ["sdk_list.bzl"],
+    visibility = ["//go:__subpackages__"],
+)

go/private/BUILD.sdk.bazel

@@ -1,5 +1,5 @@
-load("@io_bazel_rules_go//go/private:rules/binary.bzl", "go_tool_binary")
-load("@io_bazel_rules_go//go/private:rules/sdk.bzl", "package_list")
+load("@io_bazel_rules_go//go/private/rules:binary.bzl", "go_tool_binary")
+load("@io_bazel_rules_go//go/private/rules:sdk.bzl", "package_list")
 load("@io_bazel_rules_go//go:def.bzl", "declare_toolchains", "go_sdk")
 
 package(default_visibility = ["//visibility:public"])