Look, Ma! No foreign subclasses!
Look, Ma! No foreign subclasses!

Stop subclassing `pkg_resources.Environment`.

Just override `Installer._call_easy_install()` to unpack wheels
inside `eggs-directory` such that `Installer` knows to find them.

buildout/wheel,leorochael/buildout.wheel,buildout/buildout.wheel,buildout/wheel,leorochael/buildout.wheel,buildout/buildout.wheel