I concur. Besides NixOS is certainly more polished right now, at least for my definition of "polish" (I think, the right word for Scheme based Guix is "cohesive

I concur. Besides NixOS is certainly more polished right now, at least for my definition of "polish" (I think, the right word for Scheme based Guix is "cohesive", maybe even "elegant"). It should be, being several years old, compared to Guix, which has been running on real hardware for mere weeks.