It's not that farfetched, Nix is living proof that it's possible. Zig's perspective is just from the inside of your codebase.

It wasn't even intentional for Zig at the beginning, though. And any such solution should be usable across all platforms, while Nix on Windows is still not remotely usable (the latest attempt seems to be [1]).

[1] https://lastlog.de/blog/libnix_roadmap.html