anchor.diff:        name = "net-tools-tarball-${date}";
   
         src = fetchgit {
  -        version = 1;
  +        version = 6;
           url = "http://git.code.sf.net/p/net-tools/code";
           rev = gitRev;
  -        sha256 = "1f7myyc490nq29dhs45sm2njxwdnck69pm9ixiwgj44mxdmj3rbm";
  +        sha256 = "8b9ce2a56f7a457184993bb7dd2230c3b125a89dc11f28e8f18551feb8ee1d8a";
         };
   
         buildPhase = ''
  
positive.code: }:
  
  let
    date = "2016-07-10";
    gitRev = "115f1af2494ded1fcd21c8419d5e289bc4df380f";
  in
  
  stdenv.mkDerivation rec {
  
negative.code: 
    src = fetchurl {
      name = "${name}.tar.xz";
      multihash = "QmPkw3Rdbu7ym6RHBt76wKexxfYmZhDh1JEJJ4Pb436aRH";
      sha256 = "fdf1a2f2c2bdf3326d275fccd5cf2ca1bb0349d687fdb37e4efe134277ef1966";
    };
  
    nativeBuildInputs = [
  