Require Gdk version 3.0 everywhere

src/gpodder/gtkui/desktop/channel.py

@@ -17,6 +17,9 @@
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #
 
+import gi  # isort:skip
+gi.require_version('Gdk', '3.0')  # isort:skip
+gi.require_version('Gtk', '3.0')  # isort:skip
 from gi.repository import Gdk, GdkPixbuf, Gtk
 
 import gpodder

src/gpodder/gtkui/desktop/preferences.py

@@ -21,6 +21,9 @@ import html
 import logging
 import urllib.parse
 
+import gi  # isort:skip
+gi.require_version('Gdk', '3.0')  # isort:skip
+gi.require_version('Gtk', '3.0')  # isort:skip
 from gi.repository import Gdk, Gtk, Pango
 
 import gpodder

src/gpodder/gtkui/interface/addpodcast.py

@@ -17,6 +17,9 @@
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #
 
+import gi  # isort:skip
+gi.require_version('Gdk', '3.0')  # isort:skip
+gi.require_version('Gtk', '3.0')  # isort:skip
 from gi.repository import Gdk, Gtk
 
 import gpodder

src/gpodder/gtkui/interface/common.py

@@ -20,6 +20,9 @@
 import os
 import shutil
 
+import gi  # isort:skip
+gi.require_version('Gdk', '3.0')  # isort:skip
+gi.require_version('Gtk', '3.0')  # isort:skip
 from gi.repository import Gdk, Gio, Gtk
 
 import gpodder

src/gpodder/gtkui/interface/searchtree.py

@@ -18,6 +18,7 @@
 #
 
 import gi  # isort:skip
+gi.require_version('Gdk', '3.0')  # isort:skip
 gi.require_version('Gtk', '3.0')  # isort:skip
 from gi.repository import Gdk, GLib  # isort:skip
 from .common import TreeViewHelper

src/gpodder/gtkui/widgets.py

@@ -26,6 +26,9 @@
 
 import html
 
+import gi  # isort:skip
+gi.require_version('Gdk', '3.0')  # isort:skip
+gi.require_version('Gtk', '3.0')  # isort:skip
 from gi.repository import Gdk, GObject, Gtk, Pango