This basically started once our integration tests caused the overall
test time to raise above 10 minutes, causing some coverage data to be
dropped because SimpleCov believed it to be stale.
This is the (partially) documented public API for Homebrew.
The main class you should look at is the {Formula} class (and classes linked from there). That's the class that's used to create Homebrew formulae (i.e. package descriptions). Assume anything else you stumble upon is private.