I'd say Zig wants is really serious on wanting to be a better C, that is have the same (better?) access to bare-metal, memory and bits but with a better type sy

I'd say Zig wants is really serious on wanting to be a better C, that is have the same (better?) access to bare-metal, memory and bits but with a better type system and error management and without C's footguns and cruft (build system, memory errors, preprocessor). I don't know Nim that well but it seems more ambitious and seems to cater to be more "general purpose" if that means anything. For example there's no hidden flow control in Zig.