This test case expects buildifier -lint=fix to automatically add a missing load statement. However, buildifier is a formatter and linter; it does not have the capability to resolve and add missing dependencies (that is typically handled by tools like gazelle). This test will likely fail as the fix command won't produce the expected after content.

Consider using a fixable lint issue such as out-of-order-load or unsorted-dict-items for this test.

What's actually going on here is that:

• bazel has traditionally had built-in rules for C-family languages
• as built-ins, these did not need to be loaded—they were just "always there"
• recent bazel versions have migrated these built-in rules to external rules (that must then be loaded)
• the built-ins are maintained for backwards-compatibility, but the external, loadable rules are preferred
• there's a rule in buildifer that spots use of the legacy built-ins and adds any necessary load statements

Or, tl;dr: this test example looks like a (nonexistant) generic automatic-import-finder thing, but is just a narrow-purpose rule targeting a list of known rules.

The glob list is missing some common Bazel/Starlark file patterns and some entries are restricted to the root directory. It is better to include **/WORKSPACE, **/MODULE.bazel, **/REPO.bazel, and **/*.BUILD to ensure all relevant files are covered regardless of their location in the repository.

  glob = List(
    "**/BUILD",
    "**/BUILD.bazel",
    "**/WORKSPACE",
    "**/WORKSPACE.bazel",
    "**/MODULE.bazel",
    "**/REPO.bazel",
    "**/*.bzl",
    "**/*.star",
    "**/*.sky",
    "**/*.BUILD"
  )

This and the other similar comment are a good idea—will expand the list.

Adding check_diff allows hk to use git apply for applying formatting changes. This is generally more efficient and safer than running the full fix command when only formatting changes are needed.

  check = "buildifier -mode=check {{ files }}"
  check_diff = "buildifier -mode=diff {{ files }}"

This and the other similar comment are a good idea—will investigate and update.

The glob list should be expanded to include all relevant Bazel and Starlark files, matching the improvements suggested for the formatter builtin.

  glob = List(
    "**/BUILD",
    "**/BUILD.bazel",
    "**/WORKSPACE",
    "**/WORKSPACE.bazel",
    "**/MODULE.bazel",
    "**/REPO.bazel",
    "**/*.bzl",
    "**/*.star",
    "**/*.sky",
    "**/*.BUILD"
  )

Adding check_diff with -lint=warn allows hk to apply both formatting and lint fixes via patches, which is more efficient than running the fix command.

  check = "buildifier -mode=check -lint=warn {{ files }}"
  check_diff = "buildifier -mode=diff -lint=warn {{ files }}"

The version 8.5.1 appears to be a typo. The current latest stable version of buildifier (from the bazelbuild/buildtools repository) is 8.0.1. Using a non-existent version will cause installation failures in tool managers like mise.

version = "8.0.1"

I suspect this is an LLM hallucination because I can literally verify that there's an 8.5.1 version of buildifier available here.