Just a quick update for the interested:

Instead of "site/auto/Alien/Foo" for Alien::Foo, the lib target will most likely be "site/auto/Alien/lib". While that's not great because it might introduce file name clashes, the length of environment variables such as PATH and LIB is severely limited by the operating system. Hence, freely adding an entry at runtime for every Alien::* module loaded might be a very bad thing.

Steffen