{ pkgs, lib, ... }:
{
  nix.settings.experimental-features = [ "nix-command" "flakes" ];
  nixpkgs.config.allowUnfree = true;
  nix.package = pkgs.nix;
  services.nix-daemon.enable = true;
  programs.nix-index.enable = true;
  nix.gc = {
    automatic = lib.mkDefault true;
    options = lib.mkDefault "--delete-older-than 7d";
  };
  nix.settings = {
    auto-optimise-store = false;
  };
}