Dear maintainers,

In Ubuntu, we found that reverse-dependencies of python-protobuf were
failing their autopkgtests after the update to protobuf 3.6.1.  The reason
for this is that building against a particular version of protobuf results
in a runtime dependency on a matching version of python-protobuf, but this
is not expressed in the Depends: field, which only declares an unversioned
dependency on python-protobuf:

autopkgtest [22:25:39]: test command2: [-----------------------
Traceback (most recent call last):
  File "/usr/bin/rdm_responder_test.py", line 19, in <module>
    from ola.testing.rdm import TestDefinitions, TestRunner
  File "/usr/lib/python2.7/dist-packages/ola/testing/rdm/TestDefinitions.py", line 21, in <module>
    from ExpectedResults import (AckGetResult, BroadcastResult, NackGetResult,
  File "/usr/lib/python2.7/dist-packages/ola/testing/rdm/ExpectedResults.py", line 33, in <module>
    from ola.OlaClient import OlaClient
  File "/usr/lib/python2.7/dist-packages/ola/OlaClient.py", line 21, in <module>
    from ola.rpc.StreamRpcChannel import StreamRpcChannel
  File "/usr/lib/python2.7/dist-packages/ola/rpc/StreamRpcChannel.py", line 21, in <module>
    from ola.rpc import Rpc_pb2
  File "/usr/lib/python2.7/dist-packages/ola/rpc/Rpc_pb2.py", line 23, in <module>
    serialized_pb=_b('\n\tRpc.proto\x12\x07ola.rpc\"S\n\nRpcMessage\x12\x1b\n\x04type\x18\x01 \x02(\x0e\x32\r.ola.rpc.Type\x12\n\n\x02id\x18\x02 \x01(\r\x12\x0c\n\x04name\x18\x03 \x01(\t\x12\x0e\n\x06\x62uffer\x18\x04 \x01(\x0c*\xd2\x01\n\x04Type\x12\x0b\n\x07REQUEST\x10\x01\x12\x0c\n\x08RESPONSE\x10\x02\x12\x13\n\x0fRESPONSE_CANCEL\x10\x03\x12\x13\n\x0fRESPONSE_FAILED\x10\x04\x12\x1c\n\x18RESPONSE_NOT_IMPLEMENTED\x10\x05\x12\x0e\n\nDISCONNECT\x10\x06\x12\x16\n\x12\x44\x45SCRIPTOR_REQUEST\x10\x07\x12\x17\n\x13\x44\x45SCRIPTOR_RESPONSE\x10\x08\x12\x12\n\x0eREQUEST_CANCEL\x10\t\x12\x12\n\x0eSTREAM_REQUEST\x10\n')
TypeError: __new__() got an unexpected keyword argument 'serialized_options'
autopkgtest [22:25:40]: test command2: -----------------------]
autopkgtest [22:25:41]: test command2:  - - - - - - - - - - results - - - - - - - - - -
command2             FAIL non-zero exit status 1

(http://autopkgtest.ubuntu.com/packages/o/ola/disco/ppc64el)

This is a real bug in the runtime dependencies that is being detected via
the autopkgtest.  I don't know why this failure never showed up in the
autopkgtest results in Deian.

I've uploaded the attached patch to ola to Ubuntu, to force a matching
versioned dependency and build-dependency; however, it might be better to
work with the protobuf maintainers to find a more complete solution for the
runtime breakage.

Hi Steve,

Probably because the autopkgtest in ola hasn't been around for very long
yet, and this looks like the first time there's an update that would
trigger it...

Yeah, I'll do that.

Hi Steve,

Probably because the autopkgtest in ola hasn't been around for very long
yet, and this looks like the first time there's an update that would
trigger it...

Yeah, I'll do that.

Salaam,



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