{ config, pkgs, lib, ... }:
with lib;
let
  cfg = config.magic_rb.hardware;
in
{
  options = {};

  imports =
    [ ./heater.nix
      ./mark.nix
      ./omen.nix
      ./recovery-usb.nix
      (import ./oci-nixos.nix
        { hostName = "tweedledum";
          rootUUID = "79ba4403-7532-4e2c-ac5d-2910dce62009";
          efiUUID = "4478-6009";
          swapUUID = "d50e7ebf-8c62-4d2d-b19d-347378f7e5fe";
        })
      (import ./oci-nixos.nix
        { hostName = "tweedledee";
          rootUUID = "";
          efiUUID = "";
          swapUUID = "";
        })
      ./toothpick.nix
      ./gooseberry.nix
    ];

  config = {
    assertions = [
      {
        assertion =
          let
            selection = mapAttrsToList (system: enabled: { inherit system enabled; }) cfg;
          in
            count (x: x.enabled) selection == 1;
        message = "You must select exactly one hardware configuration";
      }
    ];
  };
}