Maybe I have to fix my repo.

But anyway, I added another commit that allows you to add paths as part of your pip.conf file, which makes managing vendor libraries easier, like:

[global]
sys.path = %(here)s/vendor./

Then you can uninstall libraries from vendor/ and see those libraries when updating etc.

This doesn't handle scripts well, though (what virtualenv still does better). I'm not sure how to handle that; scripts need to be rewritten and futzed with quite a bit to make them work. Where to put that futzing, and how to encode that futzing, I'm not sure. Maybe a post-script-creation hook of some sort, and then let people write their own futzers?

The kind of futzing would be:

#!/usr/bin/env python
import site, os
site.addsitedir(os.path.join(os.path.dirname(__file__), 'vendor')

and stuff like that, all before running the actual script. It works okay, but requires knowledge of layout that the existing config options don't allow for.

Refreshed here: #519