[vertex-four]

The issue is that if you have two packages installed, and both use "libs" as their top-level package, they'll collide. Use "projectname.common" instead.

[fmueller]

This is not true, you can specify package directories in setup.py.

See https://docs.python.org/2/distutils/setupscript.html#listing...

[vertex-four]

A package name != the actual name of the directory in the source tree. My point stands.