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

[indygreg (Gregory Szorc)]

indygreg added a comment.


  We're seeing this with the latest version of pip/setuptools: https://ci.hg.gregoryszorc.com/job-info/hg-committed-649a9601b9e2642fa0ef12e6ad51ac85ab6e860c-debian10-cpython-2.7-0#failed-tests.
  
  But it only happens when we're using the self-installed Python/pip/setuptools: it doesn't reproduce with Debian 10's built-in/system Python/pip/setuptools. So it is plausible it is only an issue with modern pip/setuptools. That's believable, since pyproject.toml support is relatively new.

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