I've read the answers to the related questions about managing used libraries in a Jython application:
How can I install various Python libraries in Jython?
Best method for managing Jython packages
But I don't want to put those libraries in a location on my system. I would like to distribute them with my Jython webapp. It seems I once managed to install a library to my webapp's WEB-INF/lib/Lib/site-packages/ directory, but I can't figure out how to do it again.