{ den, ... }: {
  den.default = {
    includes = with den.aspects; [
      den.provides.home-manager

      boot
      security
      locale
      essentials

      dns
      openssh
      syncthing

      catppuccin
      fish

      janitor
    ];

    nixos = { ... }: {
      imports = [
        /etc/nixos/hardware-configuration.nix
      ];

      home-manager.useGlobalPkgs = true;
      home-manager.backupFileExtension = "hm-backup";

      system = {
        stateVersion = "26.05";

        autoUpgrade = {
          enable = true;
          allowReboot = false;
        };
      };

      nixpkgs.config.allowUnfree = true;

      nix = {
        optimise.automatic = true;
        settings.experimental-features = [ "nix-command" "flakes" ];
      };
    };

    homeManager = {
      home.stateVersion = "26.05";
    };
  };
}