pip uninstall broken w/ --environment flag?
Appears to be a bug in pip 1.0.  Seems to work if I pip install --upgrade pip and then try it.
I can't seem to get pip to uninstall a package when using the environment flag.
I've created a virtual environment:
virtualenv --no-site-packages /path/to/testenv
While not in the virtual environment, I issue:
pip install --environment /path/to/testenv django
Django is downloaded and installed.
If I do the same command in reverse, it doesn't work:
pip uninstall --environment /path/to/testenv django
The uninstall command outputs:

Uninstalling Django: Proceed (y/n)? y
  Successfully uninstalled Django

But if I actually go in to the virtual environment:
. /path/to/testenv/bin/activate
and then run the uninstall command:
pip uninstall django
I get:
Uninstalling Django:

/path/to/testenv/bin/django-admin.py
  /path/to/testenv/lib/python2.7/site-packages/Django-1.3.1-py2.7.egg-info
  /path/to/testenv/lib/python2.7/site-packages/django
  Proceed (y/n)?

I'm running pip 1.0
Am I missing something, or did I hit a bug?