Cunning trick to ease upgrades in Rust. Each semver upgrade is a distinct type, but a library can depend on an older version of itself and preserve the types!
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12
Claude asked me a question today: was I looking for an Emacs plugin (because I was talking about elisp) or a Rust program (because I have configured Rust preferences)?
I'm really impressed, it's rare to see LLMs ask follow-up questions.
(I wanted Emacs in this case.)
15
I see that *up has become an increasingly common name for toolchain installers: rustup, ghcup, even juliaup.
I think Rust was the first to use this terminology? I'm curious how similar the different *up tools are.
2
I would have thought that invoking a C compiler would be a solved problem. Looking at Rust's cc crate there's a remarkable long tail of corner cases to fix.
Exotic CPUs, microarchitectures, compiler differences, operating system differences, etc.