I’ve been here a week ago already asking if Arch would be fine for a laptop used for university, as stability is a notable factor in that and I’m already using EndeavourOS at home, but now I’m curious about something else too - what about Arch vs NixOS?
I heard that NixOS is pretty solid, as due to the one file for your entire system format you can both copy and restore your system easily whenever, apart from your normal files and application configurations of course.
Are there any major downsides to NixOS compared to Arch apart from the Arch Wiki being a bit less relevant? I’d also lose access to the AUR, but admittedly I don’t think I’ve ever actually needed it for anything, it’s just nice to have. Also, since NixOS has both rolling release and static release and you can mix and match if you wanna get packages from unstable or not, I’m not losing Arch’s bleeding edge, which is nice.
Comparatively, NixOS is complex, while Arch is simple. NixOS diverges very much from traditional Linux distributions, beginning with using a diferent filesystem hierarchy, which breaks a ton of apps, requiring workarounds like patches, simulating a standard filesystem… In the long run, you will have to deal with many NixOS-specific issues.
Because you’re going to Uni, it’s better to focus on having a mostly just works distro with updated repository, and that’s Arch. On your free time in the future, maybe try NixOS in a VM just so you have a feel for it. And again, you can use Nix on Arch so you use apps from Nixpkgs.
This all comes from an originally Arch user turned into an experienced NixOS user.