Merge and build robot

[David Frey]

I just read about a tool called "Patch Queue Manager" that integrates
with bzr.  https://launchpad.net/pqm

My understanding is that a team of developers tells an automated system
that they have changes which they want to merge into the mainline.  The
automated system pulls changes from the user's repository and merges
them with the tip.  The system then runs tests to verify that the
changes haven't broken anything.  If the test succeeds, the change goes
into the main repository that all developers pull from.

Are there any tools available that allow Mercurial to support this
workflow?  This sounds really interesting.

Thanks,
David