bpo-30986: Add --include-py argument to Tools/msi/make_zip.py by segevfiner · Pull Request #2806 · python/cpython
Add an argument --include-py to Tools/msi/make_zip.py that allows including the Python modules sources and not only bytecode.
I found it useful while running Twisted's test suite in #2318, since I got an error otherwise. I don't remember what that error was and wasn't able to reproduce it while trying to run Twisted's test suite again.