anchor.diff:      };
   
       preStart = mkOption {
  -      type = types.string;
  +      type = types.lines;
         default = "";
         description = ''
           Shell commands executed before the service's main process
  
positive.code: 
      after = mkOption {
        default = [];
        type = types.listOf types.string;
        description = ''
          If the specified units are started at the same time as
          this unit, delay this unit until they have started.
  
negative.code: 
      listenStreams = mkOption {
        default = [];
        type = types.listOf types.str;
        example = [ "0.0.0.0:993" "/run/my-socket" ];
        description = ''
          For each item in this list, a <literal>ListenStream</literal>
  