Most Nix packages, yes, but the NixOS packages specifically (the ones that build Linux), probably not. NixOS and Guix have slightly different philosophies, e.g

Most Nix packages, yes, but the NixOS packages specifically (the ones that build Linux), probably not. NixOS and Guix have slightly different philosophies, e.g. about nonfree software (Guix is generally opposed to including it, although I'm not an expert on the details, while NixOS disallows it by default but only by default), and this affects e.g. device driver packages.