So, I think I will dual boot nixos and Fedora since it is uncertain if NixOS will work well out of box, and migration generally won't be painless and quick because unlike my now broken laptop that only had in-repo software and tidy /home, my main has games, stable diffusion, llama, and a lot of garbage in home directory, and it begs for clean install while I need my old stuff intact so I can work on unfinished projects (which are already not being worked on while I play with NixOS)