Recreating virtualenvs after upgrading to OS X Lion.

lion-virtualenv.sh

# Upgrade to OS X Lion, notice your virtualenvs are all hosed.

# Install Xcode 4.1 from the app store (or //fs2/IT/Apple/).
# Make sure to actually *run* the install, it's an app inside Applications. Throw it away afterwards, if you want the space back.

sudo easy_install pip
sudo pip install virtualenv virtualenvwrapper ipython

# blow the old one(s) away
rmvirtualenv playdoh

# recreate the virtualenv, point it to Python 2.6 if you like, to match our servers better than 2.7
mkvirtualenv --no-site-packages -p`which python2.6` playdoh

# reinstall the compiled packages, the vendor lib is fine.
cd ~/dev/playdoh
pip install -r requirements/compiled.txt

# enjoy.