pypa/python-packaging-user-guide — pull request #23 by g2p (2014-01-27 18:46:53+00:00)
Title: Install locations: explain user, system and virtualenvs

Also explain how to enable user-local installations by default.
The commands for that are as easy as I could make them, but not perfect:
- git is the only convenient one-liner to edit ini files
- the current pip.conf location isn't xdg-compliant