Since we can't safely depend on either PIL or Pillow, we're using

pillowfight instead, which will sanely handle depending on the right

thing, based on what's on the system.

Installed in two virtualenvs: One with PIL, one without either PIL or

Pillow.
For the one with PIL, I installed Djblets and saw it install pillowfight

and show me the warning about PIL being deprecated. Pillow wasn't installed.
For the one without either, it installed pillowfight and then Pillow.
I then installed again on the one with Pillow, and it didn't do anything

special.