The stable branch of nose is hosted at google code. You should clone this branch if you’re developing a plugin or working on bug fixes for nose:
hg clone http://python-nose.googlecode.com/hg/ nose-stable
The unstable branch of nose is hosted at bitbucket. You should fork this branch if you are developing new features for nose. Then clone your fork, and submit your changes as a pull request. If you just want to use unstable, you can clone the branch:
hg clone http://bitbucket.org/jpellerin/nose/ nose-unstable