Packages missing for mopidy

[miloit]

Hello,

I getting this error

ERROR    2025-12-15 12:43:49,327 [407371:MainThread] mopidy.ext
  Setup of extension from entry point local failed, ignoring extension.
Traceback (most recent call last):
  File "/usr/lib/python3/dist-packages/mopidy/ext.py", line 250, in load_extensions
    command=extension.get_command(),
            ~~~~~~~~~~~~~~~~~~~~~^^
  File "/usr/lib/python3/dist-packages/mopidy_local/__init__.py", line 45, in get_command
    from .commands import LocalCommand
  File "/usr/lib/python3/dist-packages/mopidy_local/commands.py", line 8, in <module>
    from mopidy_local import mtimes, storage, translator
  File "/usr/lib/python3/dist-packages/mopidy_local/storage.py", line 2, in <module>
    import imghdr
ModuleNotFoundError: No module named 'imghdr'

[MichaIng]

Thanks for your report. The latest mopidy-local has this solved: https://github.com/mopidy/mopidy-local/releases/tag/v3.3.0

But the Mopidy APT repository ships an outdated version: mopidy/mopidy-local#78

Please try this, to switch from the APT package to the PIP package:

sudo apt autopurge mopidy-local
sudo pip3 install -U mopidy-local

[miloit]

How do I start mopidy than....? Service is not available

[MichaIng]

mopidy-local is just an extension, not the core daemon. So this does not affect the service. Just restart it:

sudo systemctl restart mopidy

[miloit]

Getting now this issue

ERROR    [Core-7 (_actor_loop)] mopidy.core.library StreamBackend backend caused an exception.
Dez 17 12:20:28 pihole mopidy[219523]: Traceback (most recent call last):
Dez 17 12:20:28 pihole mopidy[219523]:   File "/usr/local/lib/python3.13/dist-packages/mopidy/core/library.py", line 17, in _backend_error_handling
Dez 17 12:20:28 pihole mopidy[219523]:     yield
Dez 17 12:20:28 pihole mopidy[219523]:   File "/usr/local/lib/python3.13/dist-packages/mopidy/core/library.py", line 230, in lookup
Dez 17 12:20:28 pihole mopidy[219523]:     result = future.get()
Dez 17 12:20:28 pihole mopidy[219523]:   File "/usr/lib/python3/dist-packages/pykka/_threading.py", line 68, in get
Dez 17 12:20:28 pihole mopidy[219523]:     raise exc_value
Dez 17 12:20:28 pihole mopidy[219523]:   File "/usr/lib/python3/dist-packages/pykka/_actor.py", line 242, in _actor_loop_running
Dez 17 12:20:28 pihole mopidy[219523]:     response = self._handle_receive(envelope.message)
Dez 17 12:20:28 pihole mopidy[219523]:   File "/usr/lib/python3/dist-packages/pykka/_actor.py", line 353, in _handle_receive
Dez 17 12:20:28 pihole mopidy[219523]:     return callee(*message.args, **message.kwargs)
Dez 17 12:20:28 pihole mopidy[219523]:   File "/usr/local/lib/python3.13/dist-packages/mopidy/stream/actor.py", line 66, in lookup
Dez 17 12:20:28 pihole mopidy[219523]:     _, scan_result = _unwrap_stream(
Dez 17 12:20:28 pihole mopidy[219523]:                      ~~~~~~~~~~~~~~^
Dez 17 12:20:28 pihole mopidy[219523]:         uri,
Dez 17 12:20:28 pihole mopidy[219523]:         ^^^^
Dez 17 12:20:28 pihole mopidy[219523]:     ...<2 lines>...
Dez 17 12:20:28 pihole mopidy[219523]:         requests_session=self.backend._session,
Dez 17 12:20:28 pihole mopidy[219523]:         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dez 17 12:20:28 pihole mopidy[219523]:     )
Dez 17 12:20:28 pihole mopidy[219523]:     ^
Dez 17 12:20:28 pihole mopidy[219523]:   File "/usr/local/lib/python3.13/dist-packages/mopidy/stream/actor.py", line 138, in _unwrap_stream
Dez 17 12:20:28 pihole mopidy[219523]:     scan_result = scanner.scan(uri, timeout=scan_timeout)
Dez 17 12:20:28 pihole mopidy[219523]:   File "/usr/local/lib/python3.13/dist-packages/mopidy/audio/scan.py", line 70, in scan
Dez 17 12:20:28 pihole mopidy[219523]:     tags, mime, have_audio, duration = _process(pipeline, timeout)
Dez 17 12:20:28 pihole mopidy[219523]:                                        ~~~~~~~~^^^^^^^^^^^^^^^^^^^
Dez 17 12:20:28 pihole mopidy[219523]:   File "/usr/local/lib/python3.13/dist-packages/mopidy/audio/scan.py", line 224, in _process
Dez 17 12:20:28 pihole mopidy[219523]:     mime = msg.get_structure().get_value("caps").get_name()
Dez 17 12:20:28 pihole mopidy[219523]:            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dez 17 12:20:28 pihole mopidy[219523]: AttributeError: 'StructureWrapper' object has no attribute 'get_name'

[MichaIng]

A bug/incompatibility between Mopidy and recent GStreamer it seems: https://discourse.mopidy.com/t/after-update-on-debian-trixie-mopidy-local-has-an-error/6139/7

Weird that I did not run into this on test installs. Maybe happens only when Mopidy has been configured to a certain degree.

If they do not release the fix before next DietPi release, we will add it to dietpi-software. It is flagged for v4.0.0, which is currently in alpha stage: https://github.com/mopidy/mopidy/releases

It is available on PyPI as well, so could be pulled with pip3 install --pre mopidy: https://pypi.org/project/mopidy/#history

Might include some breaking changes, but what I see in changelog is only a raised Python and GStreamer minimum version, not a problem on Trixie or any other Debian version we support.

[miloit]

Just do

pip3 install --pre mopidy

And it's solved?

[MichaIng]

Based on the commits I see yes. Make sense to create a backup of /mnt/dietpi_userdata/mopidy just in case there are other breaking changes + issues with this pre-release, to assure a downgrade is possible if needed.

I had a look into another possible solution for mopidy-local, as Debian ships a mopidy-local package as well. But it seems to be dead at Debian without anyone recognizing (and removing it from the Debian repo consequently). No update since 4 years, exactly the same outdated source used in Bookworm, unusable on Trixie: https://salsa.debian.org/mopidy-team/mopidy-local
There is a bug report last year, warning about the upcoming issue that you faced, but it seems the maintainer is not maintaining the package anymore 🙁: https://bugs.debian.org/1084644

For the Mopidy issue you faced next it does not look that much better. It is maintained, up-to-date, but the bug report with your exact issue is unanswered since months as well: https://bugs.debian.org/1115908

Let's hope Mopidy 4 is stable released soon, and the mopidy-local package updated on their APT repo.

[miloit]

Still getting this

#7866 (comment)

[MichaIng]

Did you restart the service? The error must be different (if any) because those lines do not exist anymore.

[miloit]

pip3 install --pre mopidy
Requirement already satisfied: mopidy in /usr/local/lib/python3.13/dist-packages (3.4.2)
Requirement already satisfied: Pykka>=2.0.1 in /usr/lib/python3/dist-packages (from mopidy) (4.1.1)
Requirement already satisfied: requests>=2.0 in /usr/lib/python3/dist-packages (from mopidy) (2.32.3)
Requirement already satisfied: setuptools in /usr/local/lib/python3.13/dist-packages (from mopidy) (80.9.0)
Requirement already satisfied: tornado>=4.4 in /usr/lib/python3/dist-packages (from mopidy) (6.4.2)
Requirement already satisfied: charset_normalizer<4,>=2 in /usr/lib/python3/dist-packages (from requests>=2.0->mopidy) (3.4.2)
Requirement already satisfied: idna<4,>=2.5 in /usr/lib/python3/dist-packages (from requests>=2.0->mopidy) (3.10)
Requirement already satisfied: urllib3<3,>=1.21.1 in /usr/lib/python3/dist-packages (from requests>=2.0->mopidy) (2.3.0)
Requirement already satisfied: certifi>=2017.4.17 in /usr/lib/python3/dist-packages (from requests>=2.0->mopidy) (2025.1.31)

root@pihole:~# sudo systemctl stop mopidy
root@pihole:~# sudo systemctl start mopidy
root@pihole:~# journalctl -u mopidy -f
Dez 22 13:40:50 pihole mopidy[478274]: ERROR    [Core-7 (_actor_loop)] mopidy.core.library StreamBackend backend caused an exception.
Dez 22 13:40:50 pihole mopidy[478274]: Traceback (most recent call last):
Dez 22 13:40:50 pihole mopidy[478274]:   File "/usr/local/lib/python3.13/dist-packages/mopidy/core/library.py", line 17, in _backend_error_handling
Dez 22 13:40:50 pihole mopidy[478274]:     yield
Dez 22 13:40:50 pihole mopidy[478274]:   File "/usr/local/lib/python3.13/dist-packages/mopidy/core/library.py", line 230, in lookup
Dez 22 13:40:50 pihole mopidy[478274]:     result = future.get()
Dez 22 13:40:50 pihole mopidy[478274]:   File "/usr/lib/python3/dist-packages/pykka/_threading.py", line 68, in get
Dez 22 13:40:50 pihole mopidy[478274]:     raise exc_value
Dez 22 13:40:50 pihole mopidy[478274]:   File "/usr/lib/python3/dist-packages/pykka/_actor.py", line 242, in _actor_loop_running
Dez 22 13:40:50 pihole mopidy[478274]:     response = self._handle_receive(envelope.message)
Dez 22 13:40:50 pihole mopidy[478274]:   File "/usr/lib/python3/dist-packages/pykka/_actor.py", line 353, in _handle_receive
Dez 22 13:40:50 pihole mopidy[478274]:     return callee(*message.args, **message.kwargs)
Dez 22 13:40:50 pihole mopidy[478274]:   File "/usr/local/lib/python3.13/dist-packages/mopidy/stream/actor.py", line 66, in lookup
Dez 22 13:40:50 pihole mopidy[478274]:     _, scan_result = _unwrap_stream(
Dez 22 13:40:50 pihole mopidy[478274]:                      ~~~~~~~~~~~~~~^
Dez 22 13:40:50 pihole mopidy[478274]:         uri,
Dez 22 13:40:50 pihole mopidy[478274]:         ^^^^
Dez 22 13:40:50 pihole mopidy[478274]:     ...<2 lines>...
Dez 22 13:40:50 pihole mopidy[478274]:         requests_session=self.backend._session,
Dez 22 13:40:50 pihole mopidy[478274]:         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dez 22 13:40:50 pihole mopidy[478274]:     )
Dez 22 13:40:50 pihole mopidy[478274]:     ^
Dez 22 13:40:50 pihole mopidy[478274]:   File "/usr/local/lib/python3.13/dist-packages/mopidy/stream/actor.py", line 138, in _unwrap_stream
Dez 22 13:40:50 pihole mopidy[478274]:     scan_result = scanner.scan(uri, timeout=scan_timeout)
Dez 22 13:40:50 pihole mopidy[478274]:   File "/usr/local/lib/python3.13/dist-packages/mopidy/audio/scan.py", line 70, in scan
Dez 22 13:40:50 pihole mopidy[478274]:     tags, mime, have_audio, duration = _process(pipeline, timeout)
Dez 22 13:40:50 pihole mopidy[478274]:                                        ~~~~~~~~^^^^^^^^^^^^^^^^^^^
Dez 22 13:40:50 pihole mopidy[478274]:   File "/usr/local/lib/python3.13/dist-packages/mopidy/audio/scan.py", line 224, in _process
Dez 22 13:40:50 pihole mopidy[478274]:     mime = msg.get_structure().get_value("caps").get_name()
Dez 22 13:40:50 pihole mopidy[478274]:            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dez 22 13:40:50 pihole mopidy[478274]: AttributeError: 'StructureWrapper' object has no attribute 'get_name'