On Aug 6, 2013, at 9:50 PM, Michael Merickel <mmericke@gmail.com> wrote:

How about building a deprecation period into the tooling? pip 1.5+ could warn users who are using *.pypi.python.org of the error in their ways and encourage them to switch to the new system and gives a date of total removal. After removal the code could also be removed from pip 1.x+.

- Michael

pip 1.5 already warns if you use ``--use-mirrors`` or ``--mirrors``. I suppose a warning could be added if you use -i N.pypi.python.org as well.