Control: tags -1 + patch >>> import dulwich._objects Traceback (most recent call last): File "<stdin>", line 1, in <module>ImportError: /usr/lib/python3/dist-packages/dulwich/_objects.cpython-34m-x86_64-linux-gnu.so: undefined symbol: PyString_FromStringAndSize
please don't ship non-working extension modules. patch at http://launchpadlibrarian.net/220370260/dulwich_0.11.2-1_0.11.2-1ubuntu1.diff.gz

