Users cannot define subclasses of Struct in python3.8+ because the classcell is not propagated to type.new
monitoring-configs/jcrawford/test/test_child_sources_pex__pex_root/mon/monitor.py:270: in <module>
class Monitor(Struct):
E RuntimeError: __class__ not set defining 'Monitor' as <class 'pystachio.typing.Monitor'>. Was __classcell__ propagated to type.__new__?
Users cannot define subclasses of Struct in python3.8+ because the classcell is not propagated to type.new