Nim is a far richer and higher level language that, like Zig, can run arbitrary code at comptime, but it also has templates and macros. But Zig does have a some things like "import a file imports a struct" which are unique to it and reflect its devotion to cross-compilation as a first class feature: every Zig compiler on every host can compile programs for every other host (at least within the Tier 1 support). Nim can't do that and I don't think any other language can. And its import mechanism is pretty standard, simply making names visible to the importing file or block; the names aren't organized into nested structs as in Zig.