> I was trying to tell you that already in msg345969 but you insisted in msg345988 that we should support that anyway.

I made a general note that "extremely unlikely" isn't unlikely enough to be an argument.

You'll notice I didn't quote any of the rest of your specific scenario, because I wasn't trying to address it. And in any case, you left out the cross-version part in that description, so you did actually describe a supported case.

(I'm not going to argue this particular point any further. If I can't help you learn the ways we do decision making on a project like CPython then I'll let someone else try.)