PEP 803, round two – “abi3t”: Stable ABI for Free-Threaded Builds

[wjakob (Wenzel Jakob)]

@encukou

Yes, the stable ABI doesn’t really give you a way to define PyVarObject if PyObject is opaque.

3.12’s PEP 697 was meant for special purposes, not for defining all the classes of an extension is in abi3t. Like with critical sections, we need new stable ABI for that.
Thanks for flagging this; it looks like the next priority after critical sections.

Would this be part of the work for the Python version that ships with abi3t? (Assuming the PEP is accepted). I’d be eager to support it in nanobind but would require this feature.