Convert from cvs to bzr repository?

[Skip Montanaro]

Based on a note from Mark Shuttleworth that Guido van Rossum forwarded to
the python-dev mailing list, I installed bzr 0.0.5 today.  Being a person who's
used nothing but CVS for several years, I have some repositories I'd like to
convert to bzr, at least so I can experiment with something substantial.
Unfortunately, I can't seem to find any mention of how to convert a repository
from cvs to bzr. Mark mentioned that Ubuntu converts cvs repositories 
routinely, so I can't imagine there's no such tool.  I just can't seem to find
it.  Is there a tool available somewhere?

Thanks,

Skip Montanaro
skip at pobox.com