I mistakenly added fields to the middle of PyDateTimeAPI and
PyFrameObject between the 7.3.5 release and the 7.3.6 release. This
broke the promise of ABI compatibility between all the 7.3.x releases
for the python 3.7 version.
Python 3.8 had a different problem connected with the values of
INCLUDEPY and LIBDIR in _sysconfidata that led to cases of inability to
build c-extension modules.
I have released PyPy 7.3.7 to fix these issues. I have also extended the
weekly testing in https://github.com/pypy/binary-testing
<https://github.com/pypy/binary-testing> which hopefully will catch ABI
breakage before a release.
Please do not use the 7.3.6 releases.
Sorry for the trouble,
Matti
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