Homebrew no longer hides macOS system python, so virtualenvwrapper breaks

[pedmiston]

I don't use the macOS system python for anything. Instead, I install versions of python2 and python3 with Homebrew. It used to be that brew install python hid the system python by default or maybe with an --overwrite-system-python flag. Now they keep them separate, so if you type $ python you'll get the macOS system python, and if you want the Homebrew-installed pythons you have to type $ python2 or $ python3.

This is an issue for managing virtualenv when using virtualenvwrapper because the virtualenvwrapper script expects to use the python first on the path. Luckily you can change this by defining an additional environment variable telling virtualenvwrapper which python interpreter to use.

# in .bash_profile
# ...
export WORKON_HOME=$HOME/.venvs
export VIRTUALENVWRAPPER_PYTHON=/usr/local/bin/python2
source /usr/local/bin/virtualenvwrapper.sh

I'm opening this issue so I remember to add this information into the materials for this repo.