~20% speed-up to Rust incremental builds

[kapilsinha]

I saw Gattaca takes on multiple crypto trading projects, and I assume several in Rust. Is compile time (and related dev productivity) an issue?

I have forked & modified the Rust compiler. My modded compiler can cache proc macro expansion; as you know, heavy proc macro dependencies impact compilation time and cause lags in rust-analyzer (in VSCode). I have written about my modifications at https://www.coderemote.dev/blog/faster-rust-compiler-macro-expansion-caching/ , and also created speed-ups for a few other teams like vector (vectordotdev/vector#19930). Would love to chat if you see value here!