NixOS: How do I install OBS?

edit /etc/nixos/configuration.nix

locate environment.systemPackages = with pkgs; [

and add

linuxPackages.v4l2loopback
(wrapOBS {
  plugins = with pkgs.obs-studio-plugins; [
    obs-backgroundremoval
    obs-shaderfilter
    obs-vintage-filter
    
  ];
})

Then you need to install the kernel driver

you can find the instructions here:

https://nixos.wiki/wiki/OBS_Studio

make sure you follow the part about boot.extraModulePackages = with config.boot.kernelPackages; [ v4l2loopback ];

if you want to use the virtual cam driver.

You may find out that you want to install this in home-manager or flakes instead, but those are novels themselves.

edit: ohh yeah almost forgot run

sudo nixos-rebuild switch

after you edit the configs to install

NixOS: How do I update the version of OBS after it’s installed?

sudo nix-channel --update

sudo nixos-rebuild switch

If it breaks, the errors are mostly unhelpful, you need to poke around and make educated guesses.

If it bricks you can go back to the previous version in grub by selecting the second to the top entry

make sure you garbage collect every now and then or the app store gets huge.