anchor.diff:  
     src = fetchurl {
       url = "https://www.python.org/ftp/python/${majorVersion}.${minorVersion}/Python-${version}.tar.xz";
  -    sha256 = "08inlbb2vb8lahw6wfq654lqk6l1x7ncpggp6a92vqw5yq2gkidh";
  +    sha256 = "0ha03sbakxblzyvlramx5fj0ranzmzx4pa2png6nn8gczkfi0650";
     };
   
     NIX_LDFLAGS = optionalString stdenv.isLinux "-lgcc_s";
  
positive.code: 
  let
    majorVersion = "3.6";
    minorVersion = "0";
    minorVersionSuffix = "";
    pythonVersion = majorVersion;
    version = "${majorVersion}.${minorVersion}${minorVersionSuffix}";
  
negative.code:     substituteInPlace configure --replace '`/usr/bin/arch`' '"i386"'
      substituteInPlace configure --replace '-Wl,-stack_size,1000000' ' '
    '';
  
    postPatch = ''
      # Determinism
  