Custom Pip Install Commands Not Running

I'm trying to run some pre-installation commands for a pip library I'm writing. My setup file looks like: from setuptools import setup

Solution 1:

I've run into a similar issue with a custom install class that prints to sys.stdout. In my case, the custom command is actually run, but it appears that the output is being filtered by pip.

I believe that this is discussed in some detail here: https://github.com/pypa/pip/issues/2732#issuecomment-97119093