So does this allow for different boot setups for NixOS? Say “webserver” or “office management” , “media streamer” profiles?
Previously I ran Debian across my setup (with a homemade configuration templating/distribution tool) but it feels like Nix really bundles up the accidental complexity of installing/deploying most software in a contained way, much more than a traditional distro.
I'll be much happier when Nix gains full reproducibility and functionality like Guix's `challenge`. But even now it feels like one of the closest implementations to the Free Software dream.
But if you mean distinct computers, then that's just three distinct configs. And it's easy to factor out common bits and use it in all three configs, since you configure things using Nix-the-language.
And if you mean all three at the same time on one PC, that's exactly what I do with my home server.
I thought that `sudo nixos-rebuild switch` was supposed to do exactly that; swap from whatever "state" your PC is on to the result of the nix expresison on "/etc/nixos/configuration.nix"
But it would be very unusual to constantly switch between two long-lived configs. I don't see why it wouldn't work, though.