refactor: remove legacy copy_directory_action helper

lib/copy_directory.bzl

@@ -7,10 +7,8 @@ on Windows (no Bash is required).
 load(
     "//lib/private:copy_directory.bzl",
     _copy_directory = "copy_directory",
-    _copy_directory_action = "copy_directory_action",
     _copy_directory_bin_action = "copy_directory_bin_action",
 )
 
 copy_directory = _copy_directory
-copy_directory_action = _copy_directory_action
 copy_directory_bin_action = _copy_directory_bin_action

lib/private/copy_directory.bzl

@@ -5,94 +5,6 @@ cmd.exe (on Windows).
 """
 
 load(":copy_common.bzl", _COPY_EXECUTION_REQUIREMENTS = "COPY_EXECUTION_REQUIREMENTS", _progress_path = "progress_path")
-load(":platform_utils.bzl", _platform_utils = "platform_utils")
-
-def _copy_cmd(ctx, src, dst):
-    # Most Windows binaries built with MSVC use a certain argument quoting
-    # scheme. Bazel uses that scheme too to quote arguments. However,
-    # cmd.exe uses different semantics, so Bazel's quoting is wrong here.
-    # To fix that we write the command to a .bat file so no command line
-    # quoting or escaping is required.
-    # Put a hash of the file name into the name of the generated batch file to
-    # make it unique within the package, so that users can define multiple copy_file's.
-    bat = ctx.actions.declare_file("%s-%s-cmd.bat" % (ctx.label.name, hash(src.path)))
-
-    # Flags are documented at
-    # https://docs.microsoft.com/en-us/windows-server/administration/windows-commands/robocopy
-    # NB: robocopy return non-zero exit codes on success so we must exit 0 after calling it
-    cmd_tmpl = "@robocopy \"{src}\" \"{dst}\" /E >NUL & @exit 0"
-    mnemonic = "CopyDirectory"
-    progress_message = "Copying directory %s" % _progress_path(src)
-
-    ctx.actions.write(
-        output = bat,
-        # Do not use lib/shell.bzl's shell.quote() method, because that uses
-        # Bash quoting syntax, which is different from cmd.exe's syntax.
-        content = cmd_tmpl.format(
-            src = src.path.replace("/", "\\"),
-            dst = dst.path.replace("/", "\\"),
-        ),
-        is_executable = True,
-    )
-    ctx.actions.run(
-        inputs = [src],
-        tools = [bat],
-        outputs = [dst],
-        executable = "cmd.exe",
-        arguments = ["/C", bat.path.replace("/", "\\")],
-        mnemonic = mnemonic,
-        progress_message = progress_message,
-        use_default_shell_env = True,
-        execution_requirements = _COPY_EXECUTION_REQUIREMENTS,
-    )
-
-def _copy_bash(ctx, src, dst):
-    cmd = "rm -Rf \"$2\" && cp -fR \"$1/\" \"$2\""
-    mnemonic = "CopyDirectory"
-    progress_message = "Copying directory %s" % _progress_path(src)
-
-    ctx.actions.run_shell(
-        tools = [src],
-        outputs = [dst],
-        command = cmd,
-        arguments = [src.path, dst.path],
-        mnemonic = mnemonic,
-        progress_message = progress_message,
-        use_default_shell_env = True,
-        execution_requirements = _COPY_EXECUTION_REQUIREMENTS,
-    )
-
-# TODO(2.0): remove the legacy copy_directory_action helper
-def copy_directory_action(ctx, src, dst):
-    """Legacy factory function that creates an action to copy a directory from src to dst.
-
-    For improved analysis and runtime performance, it is recommended the switch
-    to `copy_directory_bin_action` which takes a tool binary, typically the
-    `@aspect_bazel_lib//tools/copy_to_directory` `go_binary` either built from
-    source or provided by a toolchain and creates hard links instead of performing full
-    file copies.
-
-    This helper is used by copy_directory. It is exposed as a public API so it can be used within
-    other rule implementations.
-
-    Args:
-        ctx: The rule context.
-        src: The directory to make a copy of. Can be a source directory or TreeArtifact.
-        dst: The directory to copy to. Must be a TreeArtifact.
-    """
-
-    if not src.is_source and not dst.is_directory:
-        fail("src must be a source directory or TreeArtifact")
-    if dst.is_source or not dst.is_directory:
-        fail("dst must be a TreeArtifact")
-
-    # Because copy actions have "local" execution requirements, we can safely assume
-    # the execution is the same as the host platform and generate different actions for Windows
-    # and non-Windows host platforms
-    if _platform_utils.host_platform_is_windows():
-        _copy_cmd(ctx, src, dst)
-    else:
-        _copy_bash(ctx, src, dst)
 
 def copy_directory_bin_action(
         ctx,