All the things you list as benefits are only better because you use single packages source for all the machines, and one that has retention policy that keeps ma

All the things you list as benefits are only better because you use single packages source for all the machines, and one that has retention policy that keeps many package versions, and doesn't have shitty packages with all the content downloaded in post-install scripts. It's not because Nix is supposed to be superior to APT or something; you'd get exactly the same if you used APT with the same policies as Nix.