not grocking python path for debugging local_action

I read this blog post on using epdb to debug ansible tasks, however I’m having trouble with ansible not finding epdb in my python path.

http://michaeldehaan.net/post/35403909347/tips-on-using-debuggers-with-ansible

I’ve installed it both inside and outside of my virtualenv, but now that I think about it, I am using homebrew version of pip. With OSX Mavericks and homebrew installed, what is the best way to add something to the local_action python path?

Thanks!
Brian