The language is very in development but it's ecosystem and tooling are absolutely mature.

I would not say that ecosystem is mature. Outside of superb C interop and popular C/C++ lib wrappers.

What would you say that the ecosystem lacks that C has?

	▲	ivanjermakov 3 days ago \| parent [-]
		Various native Zig libraries. While C interop is great, converting between C types and calling convention is rather not convenient.