{lib, ...}: {
  options.dendritic.hosts = lib.mkOption {
    type = lib.types.attrsOf (
      lib.types.submodule ({name, ...}: {
        options = {
          name = lib.mkOption {
            type = lib.types.str;
            default = name;
          };

          system = lib.mkOption {
            type = lib.types.str;
          };

          type = lib.mkOption {
            type = lib.types.enum ["laptop" "desktop" "server"];
          };

          roles = lib.mkOption {
            type = lib.types.listOf lib.types.str;
            default = [];
          };

          primaryUser = lib.mkOption {
            type = lib.types.nullOr lib.types.str;
            default = null;
          };

          primaryUserExtraGroups = lib.mkOption {
            type = lib.types.listOf lib.types.str;
            default = ["wheel" "networkmanager"];
          };

          nixosModules = lib.mkOption {
            type = lib.types.listOf lib.types.deferredModule;
            default = [];
          };
        };
      })
    );
    default = {};
  };
}