def setup_virtualenv():
    run('virtualenv -p %(python)s --no-site-packages %(env_path)s;' % env)
    run('source %(env_path)s/bin/activate; easy_install -U setuptools; easy_install -U pip;' % env)
Returns a custom url to move plugin instances
dataset/ETHPy150Open ireapps/census/censusweb/fabfile.py/setup_virtualenv--crossover with--dataset/ETHPy150Open divio/django-cms/cms/models/pluginmodel.py/CMSPlugin.move_url