anchor.diff:        };
   
         usersFile = mkOption {
  -        type = types.nullOr types.path;
  -        default = "/var/lib/dokuwiki/${name}/users.php";
  +        type = with types; nullOr str;
  +        default = null;
           description = ''
             Location of the dokuwiki users file. List of users. Format:
             login:passwordhash:Real Name:email:groups,comma,separated
             Create passwordHash easily by using:$ mkpasswd -5 password `pwgen 8 1`
             Example: <link xlink:href="https://github.com/splitbrain/dokuwiki/blob/master/conf/users.auth.php.dist"/>
             '';
  +        example = "/var/lib/dokuwiki/${name}/users.auth.php";
         };
   
         disableActions = mkOption {
  
positive.code:         phpEnv = {
            DOKUWIKI_LOCAL_CONFIG = "${dokuwikiLocalConfig cfg}";
            DOKUWIKI_PLUGINS_LOCAL_CONFIG = "${dokuwikiPluginsLocalConfig cfg}";
            DOKUWIKI_USERS_AUTH_CONFIG = "${cfg.usersFile}";
          } //optionalAttrs (cfg.aclUse) {
            DOKUWIKI_ACL_AUTH_CONFIG = if (cfg.acl != null) then "${dokuwikiAclAuthConfig cfg}" else "${toString cfg.aclFile}";
  
negative.code:           Consult documentation <link xlink:href="https://www.dokuwiki.org/acl"/> for further instructions.
            Example: <link xlink:href="https://github.com/splitbrain/dokuwiki/blob/master/conf/acl.auth.php.dist"/>
          '';
          example = "/var/lib/dokuwiki/${name}/acl.auth.php";
        };
  
        aclUse = mkOption {
  