Yes, I understand that with Bitbucket transitioning from hg+git to only supporting git, Sourcehut is extremely compelling to those of us still using Mercurial. But it's not "Bitbucket" that's being supported here, it's Mercurial. The only sense in which Sourcehut can be said to support Bitbucket in the context of Mercurial is that there's a converter script that's supposed to help port stuff from BB to SH, but that's just an extra script and not part of the core offering.