Subject: Re: Seeking advice on Picard bug report (ModuleNotFoundError: 'fasteners')

On Fri, Jan 23, 2026 at 03:58:10PM +0500, nirmaladvani@live.com wrote:

I'm seeing a strange issue with MusicBrainz Picard on Trixie and would
like some feedback before I submit this to the BTS. Even though python3-fasteners is installed, the application fails to find the
module.

Since I am new to debian, I am not sure if this is something that can
be fixed without filing a bug report. In case a bug report should be
filed, should it be filed against picard or python3-fasteners.

This could be a bug, but I'd investigate it a bit further before filing
a report. If you actually had to do so, it would be against picard: it
looks unlikely that a module package made its way to stable with a bug
grave enough to make it unavailable.
If the maintainer of picard investigated it and found it's a
python3-fasteners issue, he would then reassign it the report to the
correct package.

Below is the draft of the report I have prepared. Does this look
complete, or should I investigate the Python path further first?

Adding your Python module search path would be useful to investigate the issue. You can find it with this command:
```
printf "from sys import path\nprint(path)" | python
```
Something probably happened in there, as I can run the same version of
picard correctly (but I'm on sid and have python3-fasteners version
0.19-2).

--- DRAFT BUG REPORT ---

Package: picard Version: 2.13.3-1 Severity: important

When attempting to start Picard, it fails to launch because the
'fasteners' module is missing. This suggests that 'python3-fasteners'
should be added to the package dependencies or there is a path
mismatch.

Note that picard already has python3-fasteners in its dependencies.
Cheers,

--
Ceppo
https://wiki.debian.org/Ceppo
Please, encrypt our messages with the key at the link above and send me yours.


--- PyGate Linux v1.5.2
* Origin: Dragon's Lair, PyGate NNTP<>Fido Gate (3:633/10)

Subject: Re: Seeking advice on Picard bug report (ModuleNotFoundError: 'fasteners')

Le 23/01/2026 … 11:58, nirmaladvani@live.com a ‚critÿ:

Hello,

I'm seeing a strange issue with MusicBrainz Picard on Trixie and would
like some feedback before I submit this to the BTS. Even though python3-fasteners is installed, the application fails to find the
module.

Since I am new to debian, I am not sure if this is something that can
be fixed without filing a bug report. In case a bug report should be
filed, should it be filed against picard or python3-fasteners.

Below is the draft of the report I have prepared. Does this look
complete, or should I investigate the Python path further first?

--- DRAFT BUG REPORT ---

Package: picard Version: 2.13.3-1 Severity: important

When attempting to start Picard, it fails to launch because the
'fasteners' module is missing. This suggests that 'python3-fasteners'
should be added to the package dependencies or there is a path
mismatch.

--- Steps to Reproduce ---

Run picard from the terminal.

--- Observed Behavior --- The application crashes immediately with the following traceback:

QSocketNotifier: Can only be used with threads started with QThread
Traceback (most recent call last): File "/usr/bin/picard", line 4, in <module> from picard.tagger import main ... File "/usr/lib/picard/picard/config.py", line 39, in <module> import
fasteners ModuleNotFoundError: No module named 'fasteners'

Note: python3-fasteners (version 0.18-2) is confirmed to be installed
on this system.

--- Expected Behavior --- The application should launch its GUI.

--- System Information --- Debian Release: 13.3 (Trixie/Testing) Kernel Version: 6.12.63+deb13-amd64 Architecture: amd64

--- END DRAFT ---

PS: I have not installed system-wide python packages or created
FrankenDebian that could have caused such issue.

Thanks for any help or suggestions!

Best regards
Nirmal Advani

Hello,

Here (up-to-date Trixie, Gnome), picard is started successfully notwithstanding this message:
didier@hp-notebook14:~$ picard
QSocketNotifier: Can only be used with threads started with QThread

But while you claim not having a FrankenDebian, I do wonder why your
system information states "(Trixie/Testing)" while it should state only Trixie.

What is the full result of apt policy?

--- PyGate Linux v1.5.2
* Origin: Dragon's Lair, PyGate NNTP<>Fido Gate (3:633/10)