Force compiler when running python setup.py install

Question

Is there a way to explicitly force the compiler for building Cython extensions when running python setup.py install? Where setup.py is of the form:

Answer 1

Well I found a trick in my case : I wanted to use MSVC14.0 (from buildtools 2015) and NOT MSVC14.1 (buildtools 2017). I edited the file Lib\distutils_msvccompiler.py. There is a method

_find_vcvarsall 

which is calling

best_version, best_dir = _find_vc2017()

I replaced this call by

best_version, best_dir = _find_vc2015()

Do not forget to undo this dirty trick once compiled.