anchor.diff:          '';
         };
   
  -      apikey = mkOption {
  -        type = types.str;
  +      apikeyFile = mkOption {
  +        default = null;
  +        type = types.nullOr types.str;
           description = ''
  -          The API Key to use to authenticate to CloudFlare.
  +          The path to a file containing the API Key
  +          used to authenticate with CloudFlare.
           '';
         };
   
  
positive.code:   cfg = config.services.cfdyndns;
  in
  {
    options = {
      services.cfdyndns = {
        enable = mkEnableOption "Cloudflare Dynamic DNS Client";
  
negative.code:         Type = "simple";
          User = config.ids.uids.cfdyndns;
          Group = config.ids.gids.cfdyndns;
        };
        environment = {
          CLOUDFLARE_EMAIL="${cfg.email}";
          CLOUDFLARE_RECORDS="${concatStringsSep "," cfg.records}";
        };
        script = ''
          ${optionalString (cfg.apikeyFile != null) ''
            export CLOUDFLARE_APIKEY="$(cat ${escapeShellArg cfg.apikeyFile})"
          ''}
          ${pkgs.cfdyndns}/bin/cfdyndns
        '';
      };
  
      users.users = {
  