Zig Builds Are Getting Faster

Zig 0.15.1 delivers significant compilation speed improvements across all build scenarios. Real-world benchmarks from the Ghostty terminal emulator project show build script compilation dropping from 7 seconds to 1.7 seconds, full uncached builds improving from 41 to 32 seconds, and incremental builds getting 15-66% faster. These gains come despite most code still using LLVM rather than Zig's self-hosted backend. The improvements stem from years of work on custom code generation backends, linkers, and incremental compilation infrastructure, with even greater speedups expected as these features mature.