{ lib, inputs, config, ... }: {
  programs.git.enable = true;
  programs.nh = {
    enable = true;
    clean.enable = true;
    clean.extraArgs = "--keep-since 7d";
  };
  nix = let flakeInputs = lib.filterAttrs (_: lib.isType "flake") inputs;
  in {
    settings = {
      experimental-features = [ "nix-command" "flakes" ];
      flake-registry = "";
      nix-path = config.nix.nixPath;
    };
    optimise.automatic = true;
    registry = lib.mapAttrs (_: flake: { inherit flake; }) flakeInputs;
    nixPath = lib.mapAttrsToList (n: _: "${n}=flake:${n}") flakeInputs;
  };
  system.autoUpgrade = {
    enable = true;
    flake = "git+https://git.icanttype.org/cdombroski/nix-configs.git";
    allowReboot = true;
    rebootWindow = {
      lower = "02:00";
      upper = "06:00";
    };
  };
}