feat(skadi): add ddcutil for managing monitor settings.

hosts/skadi/configuration.nix

@@ -116,6 +116,9 @@
   # Setup gpu fan curves and light undervolt
   services.lact.enable = true;
 
+  # Setup display brightness changing using ddcutil
+  hardware.i2c.enable = true;
+
   # Setup rgb control
   services.hardware.openrgb.enable = true;
 
@@ -291,6 +294,7 @@
     lm_sensors
     libva-utils
     alsa-utils
+    ddcutil
   ];
 
   # Enable nixd to see nixpkgs path

modules/linux/home-manager/hyprland.nix

@@ -276,9 +276,14 @@ in {
         ];
 
         bindel = [
+          # Volume bindings
           ", XF86AudioRaiseVolume, exec, wpctl set-volume @DEFAULT_AUDIO_SINK@ 5%+ --limit 1 && ${volume-notify}/bin/volume-notify"
           ", XF86AudioLowerVolume, exec, wpctl set-volume @DEFAULT_AUDIO_SINK@ 5%- --limit 1 && ${volume-notify}/bin/volume-notify"
           ", XF86AudioMute, exec, wpctl set-mute @DEFAULT_AUDIO_SINK@ toggle && ${volume-notify}/bin/volume-notify"
+
+          # Brightness bindings
+          "$mod, XF86AudioRaiseVolume, exec, ddcutil -d 1 setvcp 10 + 5"
+          "$mod, XF86AudioLowerVolume, exec, ddcutil -d 1 setvcp 10 - 5"
         ];
 
         # Requires playerctl