{ lib, ... }:
with lib.types; let
  inherit (lib) mkOption;
in {
  options.local = {
    hostname = mkOption {
      type = str;
    };

    portable = mkOption {
      type = bool;
    };

    loader = mkOption {
      type = enum [ "grub" "systemd-boot" ];
    };

    cpuVendor = mkOption {
      type = enum [ "amd" "intel" ];
    };

    canTouchEfiVariables = mkOption {
      type = bool;
    };

    dhcpInterface = mkOption {
      type = nullOr str;
      default = null;
    };

    videoDrivers = mkOption {
      type = listOf str;
    };

    initrdModules = mkOption {
      type = listOf str;
    };

    snapperSubvols = mkOption {
      type = attrsOf str;
      default = {};
    };

    crypt = {
      toplevel = mkOption {
        default = null;

        type = nullOr (submodule {
          options = {
            device = mkOption {
              type = str;
            };

            target = mkOption {
              type = str;
            };

            headerFromBoot = mkOption {
              type = str;
            };
          };
        });
      };

      aux = mkOption {
        default = [];
        type = listOf (submodule {
          options = {
            device = mkOption {
              type = str;
            };

            target = mkOption {
              type = str;
            };

            header = mkOption {
              type = str;
            };

            keyfile = mkOption {
              type = str;
            };
          };
        });
      };
    };

    fs = {
      boot.device = mkOption {
        type = str;
      };

      btrfs = mkOption {
        default = [];

        type = attrsOf (submodule {
          options = {
            device = mkOption {
              type = str;
            };

            subvol = mkOption {
              type = str;
            };

            ssd = mkOption {
              type = bool;
            };

            snapper = mkOption {
              type = nullOr str;
              default = null;
            };
          };
        });
      };

      layout = mkOption {
        default = {};

        type = submodule {
          options = {
            sysHddBtrfs = mkOption {
              default = null;

              type = nullOr (submodule {
                options = {
                  sys = {
                    device = mkOption {
                      type = str;
                    };

                    ssd = mkOption {
                      type = bool;
                    };

                    root = mkOption {
                      type = str;
                    };

                    toplevel = mkOption {
                      type = str;
                    };
                  };

                  hdd = {
                    device = mkOption {
                      type = str;
                    };

                    home = mkOption {
                      type = str;
                    };
                  };
                };
              });
            };
          };
        };
      };
    };
  };
}