Tox configuration

Trying to run tox on win32 (windows 7 specifically), I know its not really meant to run on win32 but its all I’ve got right now.

I noticed that I’m getting caught up on the install_command portion of the tox config file.

install_command = /usr/bin/env LANG=C.UTF-8 pip install {opts} {packages}

What is the importance of this; is my test invalid if I comment it out?