anchor.diff:        md5 = "a1266d4db421963fd3deb172c6689e4b";
       };
   
  -    buildInputs = [ pkgs.unzip ];
  +    buildInputs = [ pkgs.unzip ] ++ optionals isPy26 [ pythonPackages.ordereddict
  +                                                       pythonPackages.unittest2 ];
  +
  +    # XXX: skipping two tests fails in python2.6
  +    doCheck = ! isPy26;
   
       propagatedBuildInputs = [
         nose
  
positive.code:       md5 = "e7e581af8193551831560a736a53cf58";
      };
  
      propagatedBuildInputs = [ zope_event zope_interface zope_testing ];
  
      # ignore circular dependency on zope_location
      installCommand = ''
  
negative.code:       webtest 
        zope_component 
        zope_interface 
      ] ++ optional isPy26 unittest2;
  
      propagatedBuildInputs = [
        chameleon
  