Which part? Like, that's what NixOS is. My config repo is declarative, describes in its history every machine I've owned. You could rebuild them at any point in

Which part? Like, that's what NixOS is. My config repo is declarative, describes in its history every machine I've owned. You could rebuild them at any point in time and get an identical exact machine image out. Idk, this is why it's hard to talk about nix with people that think they know it but then also openly doubt things that you will one day take for granted if you take the time to learn it.