miniblog.

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. https://github.com/rust-lang/cc-rs/blob/main/CHANGELOG.md

I've just squeezed another 5% of performance out of difftastic by finding a few HashSet values that weren't FxHashSet. I do wonder whether hash DoS resistance is a good default. Sure, Rust programs are often pretty fast anyway, but it feels like a different threat model to the rest of Rust.

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.