Python 3.11 prints Could not find platform dependent libraries <exec_prefix>

[mejrs]

See #2314 (comment)

Ever since 3.11 was added to the workflow, it has been printing Could not find platform dependent libraries <exec_prefix>. I also get this warning locally (on Window) as the python interpreter is initialized.

[davidhewitt]

@mejrs do you still see this issue with latest Python 3.11 betas? I haven't noticed this in our CI for a while, I wonder if we can close this?

[mejrs]

I still see it in the CI logs. (for example, here)

[davidhewitt]

Ah thanks, I was looking in the wrong spot 👍

[davidhewitt]

Well I asked upstream in python/cpython#98790, no response yet. It looks like this warning is mostly benign, the documentation for Py_GetExecPrefix even implies that exec_prefix is meaningless on Windows.

I think given that the PyO3 test suite completes without issue on 3.11 I'm thinking we can go ahead and release announcing 3.11 support, and this can get resolved here or upstream later on.

[davidhewitt]

This has been resolved upstream.