You could, I suppose, patch your custom Python to *not* treat wheels built for cp35-none-win32 (or cp35-none-win_amd64, as appropriate) as compatible with that build (that requires a patch to the tag matching code in pip). You then wouldn't be able to use any binary wheels on PyPI, which is a bit heavy handed but probably necessary.
But that's probably way more complex than is justified... Paul _______________________________________________ Distutils-SIG maillist - Distutils-SIG@python.org https://mail.python.org/mailman/listinfo/distutils-sig