Yeah, but doesn't that approach presume you have a monorepo or something already? Seems like converting a native python extension to the new language will just

Yeah, but doesn't that approach presume you have a monorepo or something already? Seems like converting a native python extension to the new language will just break all the downstream users of that package who do not already have the new toolchain set up. That's exactly what happened with the cryptography package when it converted to Rust. And that's just an example. What about all the projects shipping to embedded systems, tiny Linux distros, specialty proprietary OSs, and so on?