protobuf version issue

[s7hoang]

After installing python packages in 'requirements.txt' then running python -m ankisyncd I get this error:

Traceback (most recent call last):
  File "/usr/lib/python3.10/runpy.py", line 196, in _run_module_as_main
    return _run_code(code, main_globals, None,
  File "/usr/lib/python3.10/runpy.py", line 86, in _run_code
    exec(code, run_globals)
  File "/home/test/Downloads/anki-sync-server-git/src/anki-sync-server/src/ankisyncd/__main__.py", line 8, in <module>
    import ankisyncd.sync_app
  File "/home/test/Downloads/anki-sync-server-git/src/anki-sync-server/src/ankisyncd/sync_app.py", line 33, in <module>
    from anki.collection import Collection
  File "/home/test/.local/lib/python3.10/site-packages/anki/collection.py", line 10, in <module>
    from anki import (
  File "/home/test/.local/lib/python3.10/site-packages/anki/card_rendering_pb2.py", line 14, in <module>
    from anki import generic_pb2 as anki_dot_generic__pb2
  File "/home/test/.local/lib/python3.10/site-packages/anki/generic_pb2.py", line 28, in <module>
    _EMPTY = _descriptor.Descriptor(
  File "/home/test/.local/lib/python3.10/site-packages/google/protobuf/descriptor.py", line 313, in __new__
    _message.Message._CheckCalledFromGeneratedFile()
TypeError: Descriptors cannot not be created directly.
If this call came from a _pb2.py file, your generated code is out of date and must be regenerated with protoc >= 3.19.0.
If you cannot immediately regenerate your protos, some other possible workarounds are:
 1. Downgrade the protobuf package to 3.20.x or lower.
 2. Set PROTOCOL_BUFFERS_PYTHON_IMPLEMENTATION=python (but this will use pure-Python parsing and will be much slower).

More information: https://developers.google.com/protocol-buffers/docs/news/2022-05-06#python-updates

Downgrading the protobuf package as directed does fix it but I'm not sure if that's the most appropriate solution or if I'm missing something?

[LuckyTurtleDev]

Any news about this?
Even the protobuf package of debian buster is to new. It is possible to regenerate the code, how the error message tell?

[LuckyTurtleDev]

#151

[VikashKothary]

I've downgraded the protobuf package as a quick fix for this issue.

However, I assume it will be beneficial to regenerate our protos so that we're compatible with the latest version of the library. That being said, I don't know how to do this?

Can anyone here provide some insight?

[dobefore]

I guess an update on Anki would bypass the issue?

By "regenerate our protos" it will mean use a protobuf compiler protoc to compile .proto files to python file,this would introduce a lot of complexity.

Edit: Yet this also introduce new problems due to the update.I just now tested,it fails to sync