I can add this. I’ve never actually tried using git-remote-hg with CPython
itself because I’ve made it segfault on other Mercurial repositories and I
never figured out why so I just generally fight my way through using Mercurial
on projects that themselves use Mercurial. I will absolutely test to see if
git-remote-hg works with CPython and I can document using that to contribute to
CPython. I’m not sure it needs to be part of the PEP or not? Feels like
something that would be better inside the devguide itself but I’m not opposed
to putting it both locations.