feat: fv43u brightness control

modules/nixos/hardware/fv43u.nix

@@ -2,6 +2,7 @@
   lib,
   config,
   username,
+  pkgs,
   ...
 }:
 with lib;
@@ -19,19 +20,66 @@ in
     hardware.gbmonctl.enable = true;
     boot.kernelParams = [ "video=3840x2160@120" ];
 
-    home-manager.users.${username}.wayland.windowManager.hyprland.settings = {
+    home-manager.users.${username} = {
-      general.layout = "master";
+      wayland.windowManager.hyprland.settings = {
-      master = {
+        general.layout = "master";
-        orientation = "center";
+        master = {
-        always_center_master = true;
+          orientation = "center";
-        mfact = 0.4;
+          always_center_master = true;
+          mfact = 0.4;
+        };
+        monitor = [
+          "DP-3,3840x2160@120,0x0,1,bitdepth,10"
+          "DP-3,addreserved,340,0,0,0"
+        ];
+        xwayland.force_zero_scaling = true;
+        misc.vrr = 2; # VA suffers from VRR flicker
       };
-      monitor = [
+
-        "DP-3,3840x2160@120,0x0,1,bitdepth,10"
+      programs.waybar.settings.mainBar."custom/brightness" =
-        "DP-3,addreserved,340,0,0,0"
+        let
-      ];
+          tmpFile = "${config.home-manager.users.${username}.xdg.configHome}/gbmonctl-brightness";
-      xwayland.force_zero_scaling = true;
+        in
-      misc.vrr = 2; # VA suffers from VRR flicker
+        {
+          return-type = "json";
+          exec = pkgs.writeShellScript "waybar-brightness" ''
+            BRIGHTNESS=$(cat ${tmpFile} || echo "0")
+            if [ "$BRIGHTNESS" -lt ${toString (100 / 7 * 1)} ]; then
+              ICON="󰃚"
+            elif [ "$BRIGHTNESS" -lt ${toString (100 / 7 * 2)} ]; then
+              ICON="󰃛"
+            elif [ "$BRIGHTNESS" -lt ${toString (100 / 7 * 3)} ]; then
+              ICON="󰃜"
+            elif [ "$BRIGHTNESS" -lt ${toString (100 / 7 * 4)} ]; then
+              ICON="󰃝"
+            elif [ "$BRIGHTNESS" -lt ${toString (100 / 7 * 5)} ]; then
+              ICON="󰃞"
+            elif [ "$BRIGHTNESS" -lt ${toString (100 / 7 * 6)} ]; then
+              ICON="󰃟"
+            else
+              ICON="󰃠"
+            fi
+
+            echo "{\"text\": \"$ICON $BRIGHTNESS%\"}"
+          '';
+          on-scroll-up = pkgs.writeShellScript "waybar-brightness-up" ''
+            BRIGHTNESS=$(cat ${tmpFile} || echo "0")
+            BRIGHTNESS=$((BRIGHTNESS + 5))
+            BRIGHTNESS=$((BRIGHTNESS > 100 ? 100 : BRIGHTNESS))
+            echo $BRIGHTNESS > ${tmpFile}
+            ${pkgs.gbmonctl}/bin/gbmonctl -prop brightness -val $BRIGHTNESS
+          '';
+          on-scroll-down = pkgs.writeShellScript "waybar-brightness-up" ''
+            BRIGHTNESS=$(cat ${tmpFile} || echo "0")
+            BRIGHTNESS=$((BRIGHTNESS - 5))
+            BRIGHTNESS=$((BRIGHTNESS < 0 ? 0 : BRIGHTNESS))
+            echo $BRIGHTNESS > ${tmpFile}
+            ${pkgs.gbmonctl}/bin/gbmonctl -prop brightness -val $BRIGHTNESS
+          '';
+          exec-on-event = true;
+          exec-if = "sleep 0.1";
+          interval = "once";
+        };
     };
 
     programs.steam.gamescopeSession = {

modules/nixos/shell/waybar.nix

@@ -23,6 +23,9 @@ in
           reload_style_on_change = true;
           exclusive = true;
 
+          modules-left = [
+            # "hyprland/workspaces"
+          ];
           modules-center = [
             "clock"
             "systemd-failed-units"
@@ -31,14 +34,27 @@ in
             "privacy"
             "gamemode"
             "tray"
+            "custom/brightness"
             "custom/theme"
-            #"network"
-            #"pulseaudio"
-            #"bluetooth"
           ];
 
+          "hyprland/workspaces" = {
+            format = "{windows}";
+            window-rewrite = {
+              "class<firefox>" = "󰈹";
+              "class<thunderbird>" = "";
+              "class<neovide>" = "";
+              "class<kitty>" = "";
+              "class<OrcaSlicer>" = "󰹛";
+              "class<blender>" = "";
+              "class<steam>" = "";
+            };
+            window-rewrite-default = "";
+          };
+
           "custom/theme" = {
             return-type = "json";
+            exec-on-event = true;
             exec = pkgs.writeShellScript "waybar-theme" ''
               if [ $(theme mode) = "dark" ]; then
                 echo '{"text": "", "tooltip": "Switch to light theme"}'
@@ -46,6 +62,8 @@ in
                 echo '{"text": "", "tooltip": "Switch to dark theme"}'
               fi
             '';
+            exec-if = "sleep 1";
+            interval = "once";
             on-click = "theme toggle";
           };
         };