Package: pyhoca-gui

Dear maintainers,

I believe commit e44e848415eff3e4dab69e990adfc447e79143f8 which introduced GTK3 notification support broke GTK2 notification support fallback. The problem was not present in

I believe the problem lies in this import construct in pyhoca/wxgui/ which will fail the same way even when put alone in a file

    from gi.repository import Notify as _Notify
except ImportError:
    import pynotify as _Notify

I think the problem is that even if the GTK3 Notify module is not available, many GTK3 libraries get loaded and then the pynotify import fails with 

ImportError: could not import gobject (could not find _PyGObject_API object)

This is the same exception I see when running pyhoca-gui.

I think some more sophisticated GTK version selection mechanism is needed, one that would not start loading conflicting libraries.

As a workaround for now I just removed that GTK3 import on my system.

My system is Debian 8.3 Jessie with the following (possibly relevant) gtk packages installed

dpkg -l | grep '^.i.*gtk[23].*'                                                                                                 
ii  libavahi-ui-gtk3-0:amd64               0.6.31-5                                        amd64        Avahi GTK+ User interface library for GTK3
ii  libcanberra-gtk3-0:amd64               0.30-2.1                                        amd64        GTK+ 3.0 helper for playing widget event sounds with libcanberra
ii  libcanberra-gtk3-module:amd64          0.30-2.1                                        amd64        translates GTK3 widgets signals to event sounds
ii  libdbusmenu-gtk3-4:amd64               12.10.2-1                                       amd64        library for passing menus over DBus - GTK+ version
ii  libgirara-gtk3-1:amd64                 0.2.3-1                                         amd64        library for minimalistic user interfaces (shared libraries, GTK+ 3)
ii  libgtk2-ex-podviewer-perl              0.18-1                                          all          Perl Gtk2 widget for displaying Plain Old Documentation (POD)
ii  libgtk2-ex-simple-list-perl            0.50-2                                          all          simple interface to Gtk2's complex MVC list widget
ii  libgtk2-imageview-perl                 0.05-2+b1                                       amd64        Perl bindings for the GtkImageView image viewer widget
ii  libgtk2-perl                           2:1.2492-4                                      amd64        Perl interface to the 2.x series of the Gimp Toolkit library
ii  libgtk2.0-0:amd64                      2.24.25-3                                       amd64        GTK+ graphical user interface library
ii  libgtk2.0-bin                          2.24.25-3                                       amd64        programs for the GTK+ graphical user interface library
ii  libgtk2.0-common                       2.24.25-3                                       all          common files for the GTK+ graphical user interface library
ii  libwxgtk3.0-0:amd64                    3.0.2-1+b1                                      amd64        wxWidgets Cross-platform C++ GUI toolkit (GTK+ runtime
ii  pinentry-gtk2                          0.8.3-2                                         amd64        GTK+-2-based PIN or pass-phrase entry dialog for GnuPG
ii  python-gtk2                            2.24.0-4                                        amd64        Python bindings for the GTK+ widget set
ii  python-wxgtk3.0                                                amd64        Python interface to the wxWidgets Cross-platform C++ GUI toolkit

Kind regards,
Ondřej Grover