Fedora 42 package needs update (not compatible with python-3.13)

[nbecker]

Describe the bug
A clear and concise description of what the bug is.

The package on Fedora 42 crashes with:
pympress thales_element_gain.pdf
Traceback (most recent call last):
File "/usr/lib/python3.13/site-packages/pympress/app.py", line 234, in do_open
self.do_activate(timestamp=GLib.get_current_time())
~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/usr/lib/python3.13/site-packages/pympress/app.py", line 164, in do_activate
self.gui = ui.UI(self, self.config)
~~~~~^^^^^^^^^^^^^^^^^^^
File "/usr/lib/python3.13/site-packages/pympress/ui.py", line 212, in init
self.load_ui('presenter')
~~~~~~~~~~~~^^^^^^^^^^^^^
File "/usr/lib/python3.13/site-packages/pympress/builder.py", line 186, in load_ui
self.__translate_widget_strings(obj)
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^^^^
File "/usr/lib/python3.13/site-packages/pympress/builder.py", line 79, in __translate_widget_strings
for str_prop in (prop.name for prop in a_widget.props if prop.value_type == GObject.TYPE_STRING):
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/usr/lib/python3.13/site-packages/pympress/builder.py", line 79, in
for str_prop in (prop.name for prop in a_widget.props if prop.value_type == GObject.TYPE_STRING):
^^^^^^^^^^^^^^
TypeError: 'gi._gi.GPropsIter' object is not iterable

This is a known problem fixed upstream. Can we get an update?
This is Source : python3-pympress-1.8.6-1.fc42.src.rpm
From repository : copr:copr.fedorainfracloud.org:cimbali:pympress
To Reproduce
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4. See error

Expected behavior
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Screenshots
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Environment (please complete the following information):

• OS: [e.g. Ubuntu]
• Python version: [e.g. 3.9]
• Pympress version: [e.g. 1.5.0]
• Installation method: [e.g. source, pip, binary installer, chocolatey, copr, other package manager]

Debug information (see below for file locations)

• What is reported in pympress.log?
• Does the problem still happen if you remove your config file?
  (You can just move the config file to a different location to be able to restore it after testing)

Additional context
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[Cimbali]

This is a bug in the python gobject bindings, see #330. I'll try to add a version dependency to the fedora package.

[D-VR]

same issue also on Kubuntu 25.04

[Cimbali]

Fixed by updating pygobject to ≥ 3.51, as per #330.

[D-VR]

Fixed by updating pygobject to ≥ 3.51, as per #330.

Sorry, my report wasn't clear enough.
The same issue occurs for the APT package of Pympress on Kubuntu 25.04 (and probably also Ubuntu 25.04), due to the same mismatch.
Likely best to wait for the pygobject to get downstreamed into APT at some point?

[D-VR]

To fix the install on an APT system (like Kubuntu 25.04) you can do the following:

sudo apt install libgirepository-2.0-dev
pip install -U PyGObject  --break-system-packages

Then Pympress should launch normally again.
I take no responsibility in case your system breaks :)
(it works fine on my machine)

[Cimbali]

yes or you can sudo edit pympress with the fix in #330, it’ll get overwritten in the next update but hopefully by then pygobject has been updated.
Otherwise a more semi-permanent fix would be to propose that change as a patch in Kubuntu apt’s, until such time pygobject is up to date.

[nbecker]

On Tue, Jun 24, 2025 at 10:01 AM Cimbali ***@***.***> wrote: *Cimbali* left a comment (Cimbali/pympress#341) <#341 (comment)> yes or you can sudo edit pympress with the fix in #330 <#330>, it’ll get overwritten in the next update but hopefully by then pygobject has been updated. Otherwise a more semi-permanent fix would be to propose that change as a patch in Kubuntu apt’s, until such time pygobject is up to date.

What is the solution for Fedora 42? Thanks, Neal

[Cimbali]

All the same, but I’m managing those releases myself so I need to find the time to do it.

[magikmw]

I've ran into this, and discovered pygobject was installed globally via pip. For me the command below worked, updating to the current released version of pygobject. I don't know if it didn't break anything on my system, but it did fix pympress. Don't copy paste commands into your shell. I'm not responsible for anything breaking.

sudo pip install --force-reinstall -v "PyGObject==3.54.5"

Adjust version if you read this after Feb 2026.