# 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

# fix an error is Mavericks that is fixed with an update later (running old version)
# clang: error: unknown argument: '-mno-fused-madd' [-Wunused-command-line-argument-hard-error-in-future]
export CFLAGS=-Qunused-arguments
export CPPFLAGS=-Qunused-arguments