Guix is definitely a cleaner implementation (coherent cli tooling, way better manual, not a custom, oddball language, ...).
But:
* if Nix is already very niche, Guix is the niche of a niche. The ecosystem is tiny in comparison.
* The Nix interpreter isn't exactly fast, but Guix (with it's scheme) was significantly worse for me, even in relatively small tests
* The hard stance on open source requirements is understandable, given the projects origin, but it will severely hinder adoption. No, I don't want to package every commercial app I need myself. nixpkgs has almost everything.
But:
* if Nix is already very niche, Guix is the niche of a niche. The ecosystem is tiny in comparison.
* The Nix interpreter isn't exactly fast, but Guix (with it's scheme) was significantly worse for me, even in relatively small tests
* The hard stance on open source requirements is understandable, given the projects origin, but it will severely hinder adoption. No, I don't want to package every commercial app I need myself. nixpkgs has almost everything.