Can someone else with a reasonable understanding of the type machinery in
CPython help Philippe? IMO the entire _GenericAlias class that's currently
implemented in Python in typing.py needs to be reimplemented in C.
However for a prototype (to show how other aspects of the proposal will
look) it i
In my current implementation (proof of concept), I must use a trick to
detect the _GenericAlias, without import. I check the tp_name.
static PyObject*
union_to_tuple(PyObject* cls) {
//printf("union_to_tuple");
if (!strcmp(Py_TYPE(cls)->tp_name,"_GenericAlias")) {
PyObject* origin
