Please add API call to run at_exit callbacks (available at least in Python and Ruby). We have rubyFinalize(), but it's not part of Kross API. Reproducible: Always Steps to Reproduce: Having support for at_exit will simplify unit testing because Ruby's Minitest runs all the tests in an at_exit callback.
kross was already in pure maintenance mode in kf5, for kf6 it got removed, there will be no future work spend on this beside critical security issues, if at all.