D6342: style: run a patched black on a subset of mercurial

[indygreg (Gregory Szorc)]

This revision now requires changes to proceed.
indygreg added a comment.
indygreg requested changes to this revision.


  Please add `# skip-blame` to the commit message. And split the addition of `pyproject.toml` into its own commit so we have annotate info.

REPOSITORY
  rHG Mercurial

CHANGES SINCE LAST ACTION
  https://phab.mercurial-scm.org/D6342/new/

REVISION DETAIL
  https://phab.mercurial-scm.org/D6342

To: durin42, #hg-reviewers, indygreg
Cc: martinvonz, mjpieters, mercurial-devel