Installation windows Python x86-32 minGW

How-to

Download mingw-get-inst, and run it.

1. Install to: C:\MinGW
2. Take all options when installing (about 450 MB)
3. Take the "pre" package option

It`ll use mingw compiler with msvc options in this case. Will not it? 
I think we have to use 
env = Environment(tools = ['default','mingw']) 
instead. 

env = Environment(tools = ['mingw'])

See also

Guide to radiance compilation