Please note that this gist applies to EPD version 7.0 and 7.1. EPD 7.1 includes ETS 
but not completely on OSX x64. Furthermore a patch has been submitted for inclusion 
in virtualenv that should resolve the virtualenv issue.

The notes below were compiled for 7.0 and will need to be replaced with corresponding
7.1 paths.

https://github.com/satra/virtualenv/tree/fix/EPDpatch