If a package does not have a definition in the sources.csv then it won't get built, so don't try to incorporate it into the system definition.

29394d95b3e1a63e73a3f3e31f9bab42cc1437f5 fbf_configs_0.0.a
36d82a2f1f927cbe91926e19c69fe74d9170b7de PDK_2.0.c