anchor.diff:  
   stdenv.mkDerivation rec {
     name = "kubernetes-${version}";
  -  version = "1.12.3";
  +  version = "1.13.1";
   
     src = fetchFromGitHub {
       owner = "kubernetes";
       repo = "kubernetes";
       rev = "v${version}";
  -    sha256 = "0y227qzv7hsibf0sil5ylfdvkfsd43qlsyprc1dwgbj8igjl6q2d";
  +    sha256 = "048ckirz7v1djari6l9ddkcd9i4yafcv57wk131dv0cs2zady9va";
     };
   
  -  buildInputs = [ removeReferencesTo makeWrapper which go_1_10 rsync go-bindata ];
  +  buildInputs = [ removeReferencesTo makeWrapper which go rsync go-bindata ];
   
     outputs = ["out" "man" "pause"];
   
  
positive.code: { stdenv, lib, fetchFromGitHub, removeReferencesTo, which, go_1_10, go-bindata, makeWrapper, rsync
  , components ? [
      "cmd/kubeadm"
      "cmd/kubectl"
  
negative.code:   '';
  
    preFixup = ''
      find $out/bin $pause/bin -type f -exec remove-references-to -t ${go} '{}' +
    '';
  
    meta = {
  