Also, that zig team is already working on other approaches that are better and more stable than what Bun team did:

https://ziggit.dev/t/bun-s-zig-fork-got-4x-faster-compilatio...

Notable quotes:

>There’s the 4x speedup claimed by the Bun team, already available on Zig 0.16.0!

>Each [incremental] update is taking less than 0.4s, compared to the 120+ seconds taken to rebuild with LLVM. In other words, incremental updates are over 300 times faster on this codebase than fresh LLVM builds are. In comparison, an enhancement capped at a 4x improvement is pretty abysmal. [..] Again, this feature is available in Zig 0.16.0—you can use it!