anchor.diff:      === details
   
       Type:: ${value.type}
  -    ${ if pkgs.lib.hasAttr "default" value
  +    ${ if lib.hasAttr "default" value
          then ''
           Default::
           +
  
positive.code:        then "Read Only:: {blank}"
        else ""
      }
      ${ if pkgs.lib.hasAttr "example" value
         then ''
          Example::
          +
  
negative.code: in rec {
    inherit optionsNix;
  
    optionsAsciiDoc = lib.concatStringsSep "\n" (lib.mapAttrsToList singleAsciiDoc optionsNix);
  
    optionsJSON = pkgs.runCommand "options.json"
      { meta.description = "List of NixOS options in JSON format";
  