anchor.diff:  , libcap
   , libidn2
   , openssl
  -, spCompat
   }:
   
   let
  +  date = "2018-03-14";
  +  rev = "0b4f8f12ecd487314f2c4f3d27c1a11130df5e84";
   in
   stdenv.mkDerivation rec {
  -  name = "iputils-2017-11-01";
  +  name = "iputils-${date}";
   
     src = fetchFromGitHub {
  -    version = 3;
  +    version = 6;
       owner = "iputils";
       repo = "iputils";
  -    rev = "b551fb608a1314fce824ca5a437e5381b7bbf95c";
  -    sha256 = "578bb59b7db799aa1d770d431bef6cf27823f53776a35a9980e261a20cb6af94";
  +    inherit rev;
  +    sha256 = "fa15ac68a3546fcb30645e3c478b684d620251491e1ece0e5281dd43f711d9da";
     };
   
     postPatch = /* Fix hardcoded xsltproc path */ ''
  
positive.code: 
    nativeBuildInputs = [
      docbook-xsl
      libxslt
    ];
  
  
negative.code: { stdenv
  , docbook-xsl
  , docbook_xml_dtd_44
  , fetchFromGitHub
  , libxslt
  , perlPackages
  