setup.py for packages that depend on both cython and f2py

Question

I would like to create a setup.py script for a python package with several submodules that depend on both cython and f2py. I have attempted to use setuptools and numpy.distutils, but have so far failed:

Using setuptools

I am able to compile my cython extensions (and create an installation for the rest of the package) using setuptools. I have, however, been unable to figure out how to use setuptools to generate the f2py extension. After extensive searching, I only found rather old messages like this one that state that f2py modules must be compiled using numpy.distutils.

Using numpy.distutils

I am able to compile my f2py extensions (and create an installation for the rest of the package) using numpy.distutils. I have, however, been unable to figure out how to get numpy.distutils to compile my cython extensions as it always attempts to use pyrex to compile it (and I am using extensions specific to cython) recent. I have done a search to figure out how to get numpy.distutils for cython files and - at least as of a year ago - they recommend applying a monkey patch to numpy.distutils. It seems applying such a monkey patch also restricts the options that can be passed to Cython.

My question is: what is the recommended way to write a setup.py script for packages that depend on both f2py and cython? Is applying a patch to numpy.distutils really the way to go still?