Comment 1 for bug 839461

Targeting bzr itself for now.

The main risk here is that pqm upgrades subunit/testtools making landings on lp:bzr/2.0, lp:bzr/2.1 and lp:bzr/2.2 problematic.

We can either require that pqm is not upgraded (but for how long) , ask subunit and testtools maintainers to address the compatibility issue or fix 2.0, 2.1 and 2.2 to be compatible with more recent versions of subunit/testtools.

Or there may be an easier way :)