# /etc/nixos/flake.nix
{
  inputs = {
    # same version number as in system.stateVersion of
    # configuration.nix. 
   nixpkgs.url = "github:NixOS/nixpkgs/nixos-unstable";
  };
  outputs = inputs@{ self, nixpkgs, ... }: {
    nixosConfigurations.nixbox = nixpkgs.lib.nixosSystem {
      system = "x86_64-linux";
      modules = [ ./configuration.nix ];
    };
  };
}