Exactly. The concept is great, but my Guix system (Nix fork from GNU) is already reproducible and capable of rollbacks and transactional upgrades (and declarative system configuration !)
The learning curve is quite steep tho (the Nix leaning curve is even higher, at least it used to be IMO). If the sway spin of Atomic Fedora was available earlier I probably wouldn’t have switched tbh. Both solutions are great.
Overall I’m quite happy with my Guix configuration. I’ve got roughly the same configuration on all my systems with ease, all config files (also sway for example) in the same language: Guile Scheme (LISP dialect), and the whole thing is in git. I don’t imagine going back to a regular distribution anytime soon.