{lib}: {
  /*
  Generate an enable option definition, that defaults to true.

  This conveniently allows the composition of a “common” module set.

  # Type

  mkEnable :: String -> AttrSet

  # Arguments

  name
  : The name to use in the option description.
  */
  mkDefaultEnabled = name:
    (lib.mkEnableOption name)
    // {
      default = true;
    };
}