# pip should only run if there is a virtualenv currently activated
export PIP_REQUIRE_VIRTUALENV=true
# cache pip-installed packages to avoid re-downloading
export PIP_DOWNLOAD_CACHE=$HOME/.pip/cache

# pip should only run if there is a virtualenv currently activated
export PIP_REQUIRE_VIRTUALENV=true

Remove download cache to avoid long filename error
Remove download cache to avoid long filename error

Newer versions of pip have default caching anyway.
