anchor.diff:        default = null;
         description = ''
           Secret options which will be appended to nextcloud's config.php file (written as JSON, in the same
  -        form as the `extraOptions` option), for example '{"redis":{"password":"secret","timeout"=2}}'.
  +        form as the <xref linkend="opt-services.nextcloud.extraOptions"/> option), for example
  +        '{"redis":{"password":"secret","timeout"=2}}'.
         '';
       };
     };
  
positive.code:     };
  
      extraOptions = mkOption {
        type = with types; attrsOf anything;
        default = {};
        description = ''
          Extra options which should be appended to nextcloud's config.php file.
  
negative.code: let
    cfg = config.services.nextcloud;
    fpm = config.services.phpfpm.pools.nextcloud;
  
    jsonFormat = pkgs.formats.json {};
  
    phpPackage = pkgs.php74.buildEnv {
      extensions = { enabled, all }:
  