Mutmut HTML not working with Python 3.11

[St4rG00se]

Hello,

Because of pony dependency, mutmut html not working when using Python 3.11.0

Indeed, this command throws: pony.orm.decompiling.DecompileError: Unsupported operation: RETURN_GENERATOR

It seems mutmut is not the only concerned project pony/issue/668

[Nick Drozd]

A crummy workaround is to use 3.11 to run the tests, but an earlier version (say, 3.8) to view the output.

[Anders Hovmöller]

Pony has now released a new version that works with python 3.11.