anchor.diff:                type = types.bool;
                 default = false;
                 description = ''
  -                Whether to delete files in destination. See <link
  -                xlink:href="https://docs.syncthing.net/advanced/folder-ignoredelete.html">
  -                upstream's docs</link>.
  +                Whether to skip deleting files that are deleted by peers.
  +                See <link xlink:href="https://docs.syncthing.net/advanced/folder-ignoredelete.html"/>.
                 '';
               };
             };
  
positive.code:               type = types.enum [ "sendreceive" "sendonly" "receiveonly" ];
                default = "sendreceive";
                description = ''
                  Whether to send only changes from this folder, only receive them
                  or propagate both.
                '';
              };
  
  
negative.code:         };
      };
  
      users.groups = mkIf (cfg.systemService && cfg.group == defaultGroup) {
        ${defaultGroup}.gid =
          config.ids.gids.syncthing;
      };
  
  