It turns out there is a problem with the win64 release: the c-extension platform name is win32. It should be win_amd64.

This was reported by cgohlke in https://foss.heptapod.net/pypy/pypy/-/issues/3443.

I will be releasing a 7.3.5 bugfix soon. In the meantime, please do not upload win64 wheels to PyPI built with the 7.3.4 release: they will be tagged as appropriate for win32 which will cause problems for people who have locally built a 32-bit windows pypy3.7 and use "pip install".

Note we did not officially release a 32-bit windows, so the damage so far might be minimal.

Matti