D6993: black: add a pyproject.toml that contains our black settings

[durin42 (Augie Fackler)]

durin42 added a comment.


  Ugh, weird. I think this is an issue around setuptools versions, but I'll try and ask dstufft this week. :(

REPOSITORY
  rHG Mercurial

CHANGES SINCE LAST ACTION
  https://phab.mercurial-scm.org/D6993/new/

REVISION DETAIL
  https://phab.mercurial-scm.org/D6993

To: durin42, #hg-reviewers, indygreg
Cc: mharbison72, mjpieters, mercurial-devel