anchor.diff: -{ stdenv
  -, buildPythonPackage
  -, fetchgit
  +{ lib, buildPythonPackage, fetchFromGitHub
   , isPy3k
   , simplejson
   , unittest2
  
positive.code:   # error: (6, "Couldn't resolve host 'h.wrttn.me'")
    doCheck = false;
  
    buildInputs = [ pkgs.curl simplejson unittest2 nose ];
  
    meta = with stdenv.lib; {
      homepage = https://pypi.python.org/pypi/pycurl2;
      description = "A fork from original PycURL library that no maintained from 7.19.0";
      license = licenses.mit;
  
negative.code:   version = "7.20.0";
    disabled = isPy3k;
  
    src = fetchFromGitHub {
      owner = "Lispython";
      repo = "pycurl";
      rev = "0f00109950b883d680bd85dc6e8a9c731a7d0d13";
      sha256 = "1qmw3cm93kxj94s71a8db9lwv2cxmr2wjv7kp1r8zildwdzhaw7j";
    };
  