python3Packages.rabbitpy: mark as broken

pkgs/development/python-modules/rabbitpy/default.nix

@@ -38,6 +38,10 @@ buildPythonPackage rec {
     description = "A pure python, thread-safe, minimalistic and pythonic RabbitMQ client library";
     homepage = "https://pypi.python.org/pypi/rabbitpy";
     license = licenses.bsd3;
+
+    # broken by pamqp==3, tracked in
+    # https://github.com/gmr/rabbitpy/issues/125
+    broken = true;
   };
 
 }