If you cannot insert a Bzr hook in the server, you can use the Bzr Poller. To
contrib/bzr_buildbot.py somewhere that your buildbot
configuration can import it. Even putting it in the same directory as the master.cfg
should work. Install the poller in the buildbot configuration as with any
other change source. Minimally, provide a URL that you want to poll (bzr://,
bzr+ssh://, or lp:), though make sure the buildbot user has necessary
privileges. You may also want to specify these optional values.
bzr_buildbot.pySHORT or FULL to get the short branch name or full branch address.