have cibuildwheel create pypy wheels

[dand-oss]

have cibuildwheel create pypy wheels

[mrabarnett]

Have you noted that it won't work properly with PyPy because PyPy stores strings using UTF-8?

[dand-oss]

Regex seems to work for my limited use in pypy

I see utf8 storage added 2019
https://www.pypy.org/posts/2019/03/pypy-v71-released-now-uses-utf-8-451324088028792912.html

Appears our tests are only run for python 3.10 in CI rather then the range of python versions supported - shall I add testing for a matrix of python versions to main.yml, then bring any errors up with the pypy team?

[mrabarnett]

The regex module is targeted at CPython and it expects all characters/codepoints to be the same width, so if you're working only with U+0000..U+007F (ASCII-range) it'll work, but I really don't want to say that it'll work with PyPy when it's only for that narrow range.

As for CPython versions, it should work the same across the versions except for the change matching behaviour that occurred at Python 3.7. (The re module did the same change.)