Some days ago the first release candidate for the upcoming Bcfg2 1.2.0 was made public. One of the most important changes is the packages plugin behavior. You will need to convert your existing Packages configuration. There is a
packages-convert.py script in the tools directory to assist in this migration.
Download : http://trac.mcs.anl.gov/projects/bcfg2/wiki/Download
Mailing list : https://lists.mcs.anl.gov/mailman/listinfo/bcfg-dev
IRC : #bcfg2 on chat.freenode.net