In the same way that you can skip formatting targets with

skip_<tool>

, should there be/is there a way to skip formatting BUILD files with a specific backend? e.g.

pants.backend.build_files.fmt.black

Would be useful for incrementally enabling all formatting for sub-projects.

I don't think so, but it could probably be added leveraging a glob. Feel free to open an issue and include your motivation a little better