Necessary changes for Snap GUI to work

auto_cpufreq/gui/app.py

@@ -60,7 +60,7 @@ class ToolWindow(Gtk.Window):
 
     def snap(self):
         box = Gtk.Box(orientation=Gtk.Orientation.VERTICAL, halign=Gtk.Align.CENTER, valign=Gtk.Align.CENTER)
-
+        # reference: https://forum.snapcraft.io/t/pkexec-not-found-python-gtk-gnome-app/36579/12
         label = Gtk.Label(label="GUI not available due to Snap package confinement limitations.\nPlease install auto-cpufreq using auto-cpufreq-installer\nVisit the GitHub repo for more info")
         label.set_justify(Gtk.Justification.CENTER)
         button = Gtk.LinkButton.new_with_label(

snap/snapcraft.yaml

@@ -24,11 +24,10 @@ parts:
     build-packages:
        - gcc
        - python3-dev
-       - libgirepository1.0-dev
-       - libcairo2-dev
     stage-packages:
        - coreutils
        - dmidecode
+       - pkexec
     source: .
     override-pull: |
       snapcraftctl pull
@@ -64,8 +63,10 @@ apps:
       - system-observe
       - hardware-observe
       - etc-auto-cpufreq-conf
+
   auto-cpufreq-gtk:
     command: bin/auto-cpufreq-gtk
+    extensions: [gnome]
     environment:
       PYTHONPATH: $SNAP/usr/lib/python3/site-packages:$SNAP/usr/lib/python3/dist-packages:$PYTHONPATH
       LC_ALL: C.UTF-8
@@ -75,7 +76,10 @@ apps:
       - cpu-control
       - system-observe
       - hardware-observe
-      - etc-auto-cpufreq-conf
+      - desktop
+      - desktop-legacy
+      - wayland
+      - x11
   service:
     command: usr/bin/snapdaemon
     plugs:
@@ -86,4 +90,4 @@ apps:
       LC_ALL: C.UTF-8
       LANG: C.UTF-8
       PKG_MARKER: SNAP
-    daemon: simple
+    daemon: simple