The main selling point for me, on NixOS is the ability to switch machines easily, and know that I'm basically using an identical build. Throw your config files

The main selling point for me, on NixOS is the ability to switch machines easily, and know that I'm basically using an identical build. Throw your config files onto GitHub or a flash drive, then do whatever you want on your desktop. Want to switch to your laptop? Pull any changes down, do a quick rebuild, and you have an identical system. If you buy a new machine, just install nix, pull down your config files and you're good to go. It used to take me hours to set up a new device, often relying on carefully crafted bash scripts, to try and replicate builds, that needed to be constantly maintained. Not any more. BTW, I rarely rollback, and if I do it's because I've monumentality fucked something up, which is a great feature.