[$] Using the limited C API for the Python stdlib?

The "limited" C API for CPython extensions has been around for well over adecade at this point, but it has not seen much uptake. It is meant to giveextensions an API that will allow binaries built with it to be used formultiple versions of CPython, because those binaries will only access the stableABI that will not change when CPython does. Victor Stinner has beenworking on better definition for the API; as part of that work, he suggested that some of the C extensions in thestandard library start using it in an effort for CPython to "eat itsown dog food". The resulting discussion showed that there is still a fairamount of confusion about this API-and the thrust of Stinner's overall plan.