For a long time Firefox Desktop development has supported both Mercurial and Git users. This dual SCM requirement places a significant burden on teams which are already stretched thin in parts. We have made the decision to move Firefox development to Git.
- We will continue to use Bugzilla, moz-phab, Phabricator, and Lando
- Although we’ll be hosting the repository on GitHub, our contribution workflow will remain unchanged and we will not be accepting Pull Requests at this time
- We’re still working through the planning stages, but we’re expecting at least six months before the migration begins
There are very good reasons why Git prevailed. The previous generation of SCMs were terrible. Most of the ones that came around the same time as Git (distributed SCMs) got lots of things wrong. Git is complex but it’s flexible, it doesn’t try to force any particular way of doing things on you, which means you can make it work with any flow you can think of.