Bug#743143: gnome-tweak-tool: AttributeError: 'gi._gobject.GProps' object has no attribute 'gtk_decoration_layout'

[James Cowgill]

Package: gnome-tweak-tool
Version: 3.12.0-1
Severity: grave
Justification: renders package unusable

Hi,

When running gnome-tweak-tool I get:

$ gnome-tweak-tool
Traceback (most recent call last):
  File "/usr/lib/python2.7/dist-packages/gtweak/app.py", line 39, in do_activate
    self.win = Window(self, model)
  File "/usr/lib/python2.7/dist-packages/gtweak/tweakview.py", line 45, in __init__
    titlebar = self.titlebar()
  File "/usr/lib/python2.7/dist-packages/gtweak/tweakview.py", line 74, in titlebar
    layout_desc = Gtk.Settings.get_default().props.gtk_decoration_layout;
AttributeError: 'gi._gobject.GProps' object has no attribute 'gtk_decoration_layout'

James

-- System Information:
Debian Release: jessie/sid
  APT prefers unstable
  APT policy: (500, 'unstable'), (100, 'experimental')
Architecture: amd64 (x86_64)
Foreign Architectures: i386

Kernel: Linux 3.13-1-amd64 (SMP w/4 CPU cores)
Locale: LANG=en_GB.utf8, LC_CTYPE=en_GB.utf8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash

Versions of packages gnome-tweak-tool depends on:
ii  gir1.2-gnomedesktop-3.0    3.8.4-2
ii  gir1.2-gtk-3.0             3.10.7-1
ii  gir1.2-notify-0.7          0.7.6-2
ii  gnome-shell-common         3.8.4-5
ii  gsettings-desktop-schemas  3.8.2-2
ii  python                     2.7.5-5
ii  python-gi                  3.10.2-2+b1

gnome-tweak-tool recommends no packages.

gnome-tweak-tool suggests no packages.

-- no debconf information