Support for build-and-run-time dependencies

[njs (Nathaniel J. Smith)]

@anon5950365

For me the situation presents as follows, which is that python-for-android uses that function via pep517 from the outside to analyze a package and see what it returns for that. However, I’m not aware of any way of specifying the returned value for that from the inside via setuptools other than setup_requires (which doesn’t work with Cython and also is deprecated) and

When you say “via pep517”, do you mean specifically this python package?

I think for recent setuptools, if you put a requirement in setup_requires, and you’re using a PEP 517-aware frontend (like the pep517 package, or recent pip), then anything in setup_requires gets converted into get_requires_for_build_wheel. So… if I’m right, then either setup_requires should work for your use case, or else, if it doesn’t, then that might mean that you actually do need the expensive packages already installed before you can call hooks.get_requires_for_build_wheel().