Existing functionality:
- method to check if a set of packages is consistent (no internal
  version conflicts): generate_diff.py
- unroll dependencies: setup_development.py

Needed functionality:
- need a way to extract package dependencies from setup.py
- need a graph presentation of this data -> html
- need to gather all these setup.py that we care about
- need a way to add to the list

Proposal:
- PaInt (python package inspector) to inspect packages
- wsgraph as a presentation layer
- for gathering and updating, human intervention (for now) is
recommended and required:
  * to track/detrack a mozbase dep, file a bug
  * in the future, python ecosystems need a way for at least nice
    players to alert of downstream deps

It would be nice if python setup.py files were serializeable/deserializable

Related software:
- pip