{
  inputs.nixpkgs.url = "github:nixos/nixpkgs/nixos-unstable";

  outputs =
    { nixpkgs, ... }: {
      packages."x86_64-linux".default = derivation
        {
          name = "backgrounds";
          builder = "${nixpkgs.bash}/bin/bash";
          args = [ ./builder.sh ];
        };
    };
}