To save compilation time and bandwidth the authors might be able to make their package dependencies sort of inside out, using a smaller program simply to perform the needed library loading and dependency injection on the core of the software.

Then if you're going between versions, you can avoid having to update the lion's share of code just because the dependencies change.

    jabberwork-1.2
      jabberwock.core-1.6
      jabberwock.apache.interface-0.3
    
    jabberwock-1.3
      jabberwock.core-1.6
      jabberwock.apache-interface-0.4

Instead of having to update all the hefty ".core" modules, you could get away with only updating the hopefully lighter launchers / library loaders and the specific interface code being updated.