Omarchy's current architecture is poor. I know that offends some people on this platform, (might want to consider why), but it's something I could never recommend with any integrity.
Nix would be a dramatic improvement, even to read, and especially compared to some of the bash scripts found in the repo.
It would also give the project it's own way to host packages (hello flakes), and would actually be a malleable A.I. first architecture.
Maybe Nix is like Rust: Amazing if you don't have to look at the code! I'm open to the idea that Omarchy Cinque could switch packaging system if I never have to look at nixlang, there are no ergonomic regressions, and we have full repo sovereignty.