Update: The mirror described in this post has been retired. Django source now lives on GitHub. Just wanted to post a quick note that I’m now publishing an experimental Mercurial mirror of the Django source code repository, including all tags and branches and even the djangoproject.com website source itself. Tom Tobin at The Onion has been maintaining a similar mirror of Django trunk for a while (and very helpfully answered some of my questions in IRC), but I wanted to do the whole tree.
Lately I’ve been trying out the Mercurial distributed version control system on some real projects. I currently use Subversion for production stuff at work. It’s reliable, has great Trac integration, and is most likely to be known by other developers. (In fact, we hired a new person at work this fall who will be helping me with web development, and it turned out that Subversion was what he was familiar with.