I have no idea why using specifications->packages in a system test OS breaks
this derivation; it'd be nice to find out.
* gnu/tests/messaging.scm (%pounce-os): Do not use `specifications->packages'.
Reported-by: Ada Stevenson <adanskana@gmail.com>
Reported-by: Ian Eure <ian@retrospec.tv>
Change-Id: Iea727bedecff7a140f895e456ef01503ad11dad0