Cython 3+ breakages and how to fix

Hello, good people. There is a number of packages in Factory that fail because of Cython 3+ The migration from older versions to the Cython3 is outlined here https://cython.readthedocs.io/en/latest/src/userguide/migrating_to_cy30.html I did an exercise so that people can inspire themselves in https://build.opensuse.org/package/view_file/openSUSE:Factory/python-efl/cyt... The fix is not complicated, but the noexcept keyword is not recognized by older versions of Cython, so one has to conditionalize the patch. This is just a heads-up for those that are wondering about the cryptic messages and trying to fix stuff. Cheers Fridrich