anchor.diff:  , libxml2
   , lz4
   , lzo
  +, openssl
   , pcre
  -, openssl
   , xz
   , zlib
  +, zstd
   }:
   
   stdenv.mkDerivation rec {
  -  name = "libarchive-2017-07-09";
  +  name = "libarchive-2017-08-30";
   
     src = fetchFromGitHub {
       version = 3;
       owner = "libarchive";
       repo = "libarchive";
  -    rev = "347ac2b6adfd4bca7418d30d7278d5343fc6e25e";
  -    sha256 = "f00151d630a8e509703e8e207f37d3ad472f5a3385639a6550bdd6c4fb86dfcc";
  +    rev = "1f3877960058e7f7b6a79748d73276cece0d5de0";
  +    sha256 = "f6ee59b32b3166b0079b066c9530f9c9b4376b7ed9d07e470d1dc8ab18fe7c73";
     };
   
     nativeBuildInputs = [
  
positive.code:     libxml2
      lz4
      lzo
      pcre
      openssl
      xz
      zlib
    ];
  
    postPatch = ''
  
negative.code:     "--with-lz4"
      "--with-lzma"
      "--with-lzo2"
      "--with-zstd"
      "--without-nettle"
      "--with-openssl"
      "--with-xml2"
  