anchor.diff:  
     librouteros = callPackage ../development/python-modules/librouteros { };
   
  -  libsass = (callPackage ../development/python-modules/libsass {
  +  libsass = callPackage ../development/python-modules/libsass {
       inherit (pkgs) libsass;
  -  });
  +  };
   
     libsavitar = callPackage ../development/python-modules/libsavitar { };
   
  
positive.code:   pyctr = callPackage ../development/python-modules/pyctr { };
  
    pycuda = callPackage ../development/python-modules/pycuda {
      cudatoolkit = pkgs.cudatoolkit;
      inherit (pkgs.stdenv) mkDerivation;
    };
  
  
negative.code:   coveralls = callPackage ../development/python-modules/coveralls { };
  
    cppe = callPackage ../development/python-modules/cppe {
      inherit (pkgs) cppe;
    };
  
    cppheaderparser = callPackage ../development/python-modules/cppheaderparser { };
  