anchor.diff:  
   stdenv.mkDerivation rec {
     pname = "sudo";
  -  version = "1.9.7p2";
  +  version = "1.9.8p2";
   
     src = fetchurl {
       url = "https://www.sudo.ws/dist/${pname}-${version}.tar.gz";
  -    sha256 = "sha256-KLXucl2/iaeFL0LzCcqHfSgQqVMbTuz+WfOoS2tK/Kg=";
  +    sha256 = "sha256-njuLjafe9DtuYMJXq+gEZyBWcP0PfAgd4UI8QUtoDy0=";
     };
   
     prePatch = ''
  
positive.code:       installFlags="sudoers_uid=$(id -u) sudoers_gid=$(id -g) sysconfdir=$out/etc rundir=$TMPDIR/dummy vardir=$TMPDIR/dummy DESTDIR=/"
      '';
  
    nativeBuildInputs = [ groff ];
    buildInputs = [ pam ];
  
  
negative.code: { lib
  , stdenv
  , fetchurl
  , buildPackages
  , coreutils
  , pam
  , groff
  