Package Management 2 - Local to Machine

[rewrking]

At this point, in-project packages should be as done as they can be. "Local to machine" means there's some kind of repository structure that describes packages and versions. A package for the "foo" library would have some kind of manifest file that describes the package namespace name, which versions are available, and where the code is located.

At this time, every package is downloaded and built locally, so each version can have various builds.