[TIP] [tox] Passing options to setup.py?

[Chris Ball]

Hi,

I'd like to build and test NumPy with Tox. On linux, this works fine (just "tox" 
with a standard tox.ini). However, on my Windows machine I need to pass "--
compiler=mingw32" to NumPy's setup.py. Sorry if I'm being stupid, but I just 
couldn't figure out how to do this! Any ideas?

Thanks,
Chris