It is also a problem for packages that do use setup.py. My apsw extension has several options including fetching some other prequisites, and choosing which ext

It is also a problem for packages that do use setup.py. My apsw extension has several options including fetching some other prequisites, and choosing which extensions to include, but you can't give options to pip to pass along. http://rogerbinns.github.io/apsw/build.html#setup-py http://rogerbinns.github.io/apsw/build.html#setup-py