hyprland: add volume control

home/hyprland.nix

@@ -18,6 +18,9 @@ let
   in
     if hasAttr key keyNames then keyNames."${key}" else key;
 
+  wm-helpers = import ./wm-helpers.nix {inherit lib pkgs;};
+  inherit (wm-helpers) keysetting;
+
 in
 {
   home.packages = with pkgs; [
@@ -196,6 +199,18 @@ in
         "$mod SHIFT, 9, movetoworkspace, 9"
         "$mod SHIFT, 0, movetoworkspace, 10"
 
+        # Volume controls
+        ",XF86AudioLowerVolume, exec, ${keysetting} volumeup"
+        ",XF86AudioLowerVolume, exec, ${keysetting} volumedown"
+        ",XF86AudioMute, exec, ${keysetting} mute"
+        ",XF86AudioMicMute, exec, ${keysetting} micmute"
+
+        # brightness
+        ",XF86KbdBrightnessDown, exec, ${keysetting} keydown"
+        ",XF86KbdBrightnessUp, exec, ${keysetting} keyup"
+        ",XF86MonBrightnessDown, exec, ${keysetting} mondown"
+        ",XF86MonBrightnessUp, exec, ${keysetting} monup"
+
         # Example special workspace (scratchpad)
         "$mod, S, togglespecialworkspace, magic"
         "$mod SHIFT, S, movetoworkspace, special:magic"

home/wm-helpers.nix

@@ -0,0 +1,22 @@
+# TODO make this into a package
+{ pkgs, ...}:
+{
+  keysetting = pkgs.writeShellScript "keysetting" ''
+    wpctl=${pkgs.wireplumber}/bin/wpctl
+    notify_send=${pkgs.libnotify}/bin/notify-send
+
+    notifyvol () {
+      $notify_send "$(wpctl get-volume @DEFAULT_SINK@)"
+    }
+
+    setvol () {
+      $wpctl set-volume @DEFAULT_SINK@ "$1"
+      notifyvol
+    }
+    case "$1" in
+      volumeup) setvol 5%+ ;;
+      volumedown) setvol 5%- ;;
+      mute) $wpctl set-mute @DEFAULT_SINK@ toggle; notifyvol;;
+    esac
+  '';
+}