Jython has finally migrated from Subversion to Mercurial. This has been a long time coming: unfortunately we had a difficult Subversion repo that took some effort to cleanly convert to a different revision control system.
The new official Jython repo is now hosted @
with a BitBucket Mirror for easy forking.
There's also a larger read-only repo with ongoing feature branches (converted to Mercurial Bookmarks) hosted at http://hg.python.org/jython-fullhistory
Mercurial makes it even easier to contribute to Jython, pull up a fork and come help us build Jython 2.6!