anchor.diff:    z3c_form = buildPythonPackage rec {
       name = "z3c.form-3.0";
       src = fetchurl {
  -      url = "https://pypi.python.org/packages/source/z/z3c.form/z3c.form-3.0.zip";
  +      url = "http://pypi.python.org/packages/source/z/z3c.form/z3c.form-3.0.zip";
         md5 = "f9fa3cf56c83722425b3b1be4467ce46";
       };
       buildInputs = [ pkgs.unzip ];
  
positive.code:     };
    };
  
    zope_configuration = buildPythonPackage rec {
      name = "zope.configuration-3.7.4";
      src = fetchurl {
  
negative.code: # DO NOT EDIT THIS FILE!
  #
  # Nix expressions autogenerated with:
  #   bin/pypi2nix -n plone43Packages -d Plone -d mailinglogger -d zc.recipe.egg -d plone.recipe.zope2instance -d plone.recipe.zeoserver -d plone.recipe.varnish -d collective.recipe.template -d Pillow -i setuptools -i zc_buildout -i pillow -e plone/4.3.1.json -p plone/4.3.1.txt -o plone/4.3.1.nix
  
  { pkgs, pythonPackages }:
  
  