Whether you consider it a big deal or not is up to you, but with zig's approach you don't have to write/maintain a separate parser, nor worry about whether it's

Whether you consider it a big deal or not is up to you, but with zig's approach you don't have to write/maintain a separate parser, nor worry about whether it's complete enough to process your source files. I don't know a lot about debugging zig comptime, though. I use printf-style debugging and the built-in unit test blocks. That's all I've needed so far. (Perhaps that's all there is.)