Zig sources go into a single big compilation unit. C sources can be split into multiple CUs and Zig has a neat caching system that integrates with clang to only

Zig sources go into a single big compilation unit. C sources can be split into multiple CUs and Zig has a neat caching system that integrates with clang to only rebuild a CU when necessary (you don't have to do anything to set it up). An incremental compilation feature is coming to the self-hosted compiler: https://kristoff.it/blog/zig-new-relationship-llvm/ https://kristoff.it/blog/zig-new-relationship-llvm/