anchor.diff:  { stdenv
  +, automake
   , bison
   , fetchurl
   , flex
  
positive.code: }:
  
  let 
    versionMajor = "3.7";
    versionMinor = "11";
    version = "${versionMajor}.${versionMinor}";
  in
  stdenv.mkDerivation rec {
  
negative.code: 
    src = fetchurl {
      url = "https://download.gluster.org/pub/gluster/glusterfs/${versionMajor}/${version}/${name}.tar.gz";
      sha256 = "af3c666a7eca3f2d85bfa729cae38182e73d0abba48ee40b78be2f722aa0364e";
    };
  
    nativeBuildInputs = [
  