anchor.diff:  { stdenv
  +, autoreconfHook
   , fetchurl
  +, python3Packages
   
   , kerberos
   , keyutils
  
positive.code:     talloc
    ];
  
    preBuild = ''
      makeFlagsArray+=("root_sbindir=$out/sbin")
    '';
  
negative.code:     srcVerification = fetchurl {
        failEarly = true;
        pgpsigUrls = map (n: "${n}.asc") src.urls;
        pgpKeyFingerprint = "D869 2123 C406 5DEA 5E0F  3AB5 249B 39D2 4F25 E3B6";
        inherit (src) urls outputHash outputHashAlgo;
      };
    };
  