CPython eyes UTF-8 as default internal string storage
Inada Naoki’s pre-PEP and reference build aim to ease Stable ABI use and C/Rust interop, while maintainers flag risks for existing C extensions.
By rvalue#stable-abi
CPython developer proposes one-time stable ABI break
Mark Shannon wants freedom to reshape object headers for cleaner code and speed, while extension maintainers flag costs for abi3 wheels.
By segfault