fix(2.x): alias coreutils and copy toolchains to bazel_lib (#1216)

Fixes JS action de-duplication, where ruleset A still uses
aspect_bazel_lib to create actions, while ruleset B uses bazel_lib and
creates identical actions.

Confirmed working in aspect-build/rules_lint#666

Author: alexeagle

MODULE.bazel

@@ -13,6 +13,11 @@ bazel_dep(name = "platforms", version = "0.0.10")
 bazel_dep(name = "stardoc", version = "0.7.1")
 bazel_dep(name = "rules_shell", version = "0.4.1")
 
+# Depend on our own renamed module, providing back-compat to make migration easier.
+# See https://github.com/aspect-build/rules_lint/pull/666 as an example where it's needed,
+# because JS actions often rely on action deduplication.
+bazel_dep(name = "bazel_lib", version = "3.0.0")
+
 # TODO(3.0): remove this back-compat
 bazel_dep(name = "jq.bzl", version = "0.1.0")
 bazel_dep(name = "yq.bzl", version = "0.1.1")

lib/BUILD.bazel

@@ -47,20 +47,24 @@ toolchain_type(
     name = "yq_toolchain_type",
 )
 
-toolchain_type(
+alias(
     name = "copy_directory_toolchain_type",
+    actual = "@bazel_lib//lib:copy_directory_toolchain_type",
 )
 
-toolchain_type(
+alias(
     name = "copy_to_directory_toolchain_type",
+    actual = "@bazel_lib//lib:copy_to_directory_toolchain_type",
 )
 
-toolchain_type(
+alias(
     name = "coreutils_toolchain_type",
+    actual = "@bazel_lib//lib:coreutils_toolchain_type",
 )
 
-toolchain_type(
+alias(
     name = "expand_template_toolchain_type",
+    actual = "@bazel_lib//lib:expand_template_toolchain_type",
 )
 
 # TODO(3.0): remove

lib/repositories.bzl

@@ -33,6 +33,12 @@ def aspect_bazel_lib_dependencies():
         ],
         sha256 = "3384eb1c30762704fbe38e440204e114154086c8fc8a8c2e3e28441028c019a8",
     )
+    http_archive(
+        name = "bazel_lib",
+        sha256 = "6fd3b1e1a38ca744f9664be4627ced80895c7d2ee353891c172f1ab61309c933",
+        strip_prefix = "bazel-lib-3.0.0",
+        url = "https://github.com/bazel-contrib/bazel-lib/releases/download/v3.0.0/bazel-lib-v3.0.0.tar.gz",
+    )
     http_archive(
         name = "tar.bzl",
         sha256 = "b47e3c83a0c1440ce335aa1ae18753da6eb7cd551d4946fa303de2abde07e20b",