> I'm not strongly against the feature. I first proposed to expose it, but make it private. Almost one year later, the PR was not updated. So I just closed the PR and the issue.

All clear, Victor. Let's keep this closed. The reason I didn't reply is because we are no longer need it and this is a very low-level piece of functionality that I myself feel uneasy about. It can have potential problems to implement in PyPy/other interpreters in a compatible with CPython fashion.

I'll reopen if there's a need for this in asyncio. But even then, we can make this a "private" and undocumented function in the sys module (of course that would mean that we only use it to issue warnings / add extra debug functionality).