{
  description = "NixOS configuration with flakes for raspberry pi 4";
  inputs = {
    nixos-hardware.url = "github:NixOS/nixos-hardware/master";
  };

  outputs = { self, nixpkgs, nixos-hardware } @ inputs: {
    nixosConfigurations = {
      "nixos-pi4" = nixpkgs.lib.nixosSystem {
        system = "aarch64-linux";
        modules = [
          nixos-hardware.nixosModules.raspberry-pi-4
          ./configuration.nix
        ];
      };
    };
  };
}