Namespace Gtk not available

[revad]

I'm using OpenSuSE Leap 15.4. It comes with Python 2.7 and 3.6
I installed package python39 from the standard SuSE repo - 3.9.13
I configured update-alternatives so that python3 calls 3.9 (python calls 2.7)

I followed the tutorial and all seemed to go OK until 'briefcase run' when I got this:

Traceback (most recent call last):
  File "/tmp/.mount_Hello_Ibuvoi/usr/lib/python3.9/runpy.py", line 197, in _run_module_as_main
    return _run_code(code, main_globals, None,
  File "/tmp/.mount_Hello_Ibuvoi/usr/lib/python3.9/runpy.py", line 87, in _run_code
    exec(code, run_globals)
  File "/tmp/.mount_Hello_Ibuvoi/usr/app/helloworld/__main__.py", line 4, in <module>
    main().main_loop()
  File "/tmp/.mount_Hello_Ibuvoi/usr/app/helloworld/app.py", line 41, in main
    return HelloWorld()
  File "/tmp/.mount_Hello_Ibuvoi/usr/app_packages/toga/app.py", line 278, in __init__
    self.factory = get_platform_factory(factory)
  File "/tmp/.mount_Hello_Ibuvoi/usr/app_packages/toga/platform.py", line 41, in get_platform_factory
    from toga_gtk import factory
  File "/tmp/.mount_Hello_Ibuvoi/usr/app_packages/toga_gtk/factory.py", line 1, in <module>
    from .app import App, DocumentApp, MainWindow
  File "/tmp/.mount_Hello_Ibuvoi/usr/app_packages/toga_gtk/app.py", line 13, in <module>
    from .keys import gtk_accel
  File "/tmp/.mount_Hello_Ibuvoi/usr/app_packages/toga_gtk/keys.py", line 3, in <module>
    from .libs import Gdk
  File "/tmp/.mount_Hello_Ibuvoi/usr/app_packages/toga_gtk/libs/__init__.py", line 1, in <module>
    from .gtk import *  # noqa: F401, F403
  File "/tmp/.mount_Hello_Ibuvoi/usr/app_packages/toga_gtk/libs/gtk.py", line 3, in <module>
    gi.require_version('Gtk', '3.0')
  File "/tmp/.mount_Hello_Ibuvoi/usr/app_packages/gi/__init__.py", line 126, in require_version
    raise ValueError('Namespace %s not available' % namespace)
ValueError: Namespace Gtk not available

I ran docker with 'sudo dockerd' - no other configuration.
The console output is at https://susepaste.org/1351917
The log of the failing briefcase run is at https://susepaste.org/71024975

I can run the toga demo with python 3.9.

I do not get an error if I run this in python 3.9

import gi
gi.require_version('Gtk', '3.0')

I'd be grateful for any hints.

Dave

[rmartin16]

You'll probably have better luck with the bleeding edge of briefcase:

python -m pip install -U git+https://github.com/beeware/briefcase.git@main

That'll include #756 which should address this issue. Alternatively, a new version of briefcase is forthcoming and will include this.

[revad]

Thank you. The latest version works.

Next time I'll search in PRs as well as issues.

[mhsmith]

FYI: you can search PRs, issues and discussions simultaneously using the black box at the top of the screen.

[revad]

FYI: you can search PRs, issues and discussions simultaneously using the black box at the top of the screen.

Found it. That's useful. Thanks.