Bug#921652: soundconverter 3.0.1-1 not starting

["G. Heine" <ghpy@safe-mail.net>]

Package: soundconverter
Version: 3.0.1-1
Severity: grave
Justification: renders package unusable

Dear Maintainer,

after I updated soundconverter from 3.0.0-2 to 3.0.1-1 today the program
doesn't start anymore.
Trying to start via terminal gives the following lines:

~$ soundconverter
SoundConverter 3.0.1
/usr/bin/soundconverter:73: PyGIDeprecationWarning: Since version 3.11, calling
threads_init is no longer needed. See:
https://wiki.gnome.org/PyGObject/Threading
  GLib.threads_init()
  using GTK version: 3.0
  using Gstreamer version: 1.14.4.0
Traceback (most recent call last):
  File "/usr/bin/soundconverter", line 164, in <module>
    from soundconverter.batch import cli_convert_main
  File "/usr/share/soundconverter/python/soundconverter/batch.py", line 31, in
<module>
    from soundconverter.gstreamer import TagReader
  File "/usr/share/soundconverter/python/soundconverter/gstreamer.py", line 70,
in <module>
    gi.require_version('GConf', '2.0')
  File "/usr/lib/python3/dist-packages/gi/__init__.py", line 129, in
require_version
    raise ValueError('Namespace %s not available' % namespace)
ValueError: Namespace GConf not available

Best regards
G. Heine



-- System Information:
Debian Release: buster/sid
  APT prefers testing
  APT policy: (700, 'testing')
Architecture: amd64 (x86_64)
Foreign Architectures: i386

Kernel: Linux 4.19.0-2-amd64 (SMP w/4 CPU cores)
Locale: LANG=de_DE.UTF-8, LC_CTYPE=de_DE.UTF-8 (charmap=UTF-8), LANGUAGE=de_DE.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)

Versions of packages soundconverter depends on:
ii  dconf-gsettings-backend [gsettings-backend]  0.30.1-2
ii  gir1.2-glib-2.0                              1.58.3-1
ii  gir1.2-gstreamer-1.0                         1.14.4-1
ii  gir1.2-gtk-3.0                               3.24.4-1
ii  gstreamer1.0-plugins-base                    1.14.4-dmo1
ii  gstreamer1.0-plugins-good                    1.14.4-dmo1
ii  python3                                      3.7.2-1
ii  python3-gi                                   3.30.4-1

Versions of packages soundconverter recommends:
ii  gir1.2-notify-0.7          0.7.7-3
pn  gstreamer1.0-libav         <none>
ii  gstreamer1.0-plugins-ugly  1:1.14.4-dmo1

soundconverter suggests no packages.

-- no debconf information