Thanks to Erik Huelsmann for helping me set up Subversion on common-lisp.net.
Now all projects have a default Subversion repository set up in /project/project-name/svn
correctly configured to email commits to email@example.com. If you want to
continue using arch, darcs or CVS, that's fine and if you want to move onto Subversion
that should now be very easy to do. Let me know
if there are any questions or problems.