At CodeRemote, I have forked and modified the Rust compiler, rustc itself. One feature — caching procedural macro expansion — has yielded 11-40% faster incremental build times in several real-life crates. That means faster dev builds and less laggy rust-analyzer (IDE IntelliSense). If you’re a Rust compiler performance pro, feel free to skip to what I did. Otherwise, keep reading for more context! Rust compilation can be slow… There is a lot to like about the Rust language, but it’s a bit of a m...