I have a patch that seems to do the right thing. It required adding WITH_NEXT_FRAMEWORK to the globals when evaluating getpath.py to detect this scenario.

There probably should be more tests, in particular a test for a virtual environment using a framework install as I had to adjust my patch after manually testing a virtual environment.

I'm not entirely happy with the patch yet, the change to getpath.py is basically the minimal change I could get away with without grokking the entire file.

There's no PR yet as I've broken my fork of cpython, fixing that is next up on the list.

BTW. Is there a way to find the values that get put into the globals dict for getpath.py without using a debugger (either a real one or the printf variant)?