Zig's focus on compilation speed is paying off. Ghostty just finished upgrading to Zig 0.15, and here are some results.

Build Script Compilation: 7s to 1s
Full Uncached Build: 41s to 32s
Libghostty Incremental Build: 3s to 950ms

Full blog post:
https://mitchellh.com/writing/zig-builds-getting-faster