add notification toggle

modules/home/hyprland/applications/default.nix

@@ -58,6 +58,7 @@ in
   imports = [
     ./bemenu
     ./dmenu-bluetooth
+    ./dunst-toggle
     ./element-desktop
     ./feh
     ./kitty
@@ -135,6 +136,11 @@ in
       bind = [ "$mod SHIFT, m, exec, ${terminal} -T ${musicplayer} -e ${musicplayer}" ];
     };
 
+    notifications = mkAppAttrs {
+      default = "dunst-toggle";
+      bind = [ "$mod, Backspace, exec, ${notifications}" ];
+    };
+
     networksettings = mkAppAttrs {
       default = "networkmanager_dmenu";
       bind = [ "$mod SHIFT, n, exec, ${networksettings}" ];

modules/home/hyprland/applications/dunst-toggle/default.nix

@@ -0,0 +1,18 @@
+{
+  config,
+  lib,
+  pkgs,
+  ...
+}:
+
+let
+  cfg = config.wayland.windowManager.hyprland;
+  app = cfg.applications.notifications.default;
+
+  inherit (lib) mkIf;
+in
+{
+  config = mkIf (cfg.enable && app == "dunst-toggle") {
+    home.packages = [ (import ./dunst-toggle.nix { inherit config pkgs; }) ];
+  };
+}

modules/home/hyprland/applications/dunst-toggle/dunst-toggle.nix

@@ -0,0 +1,11 @@
+{ config, pkgs, ... }:
+
+let
+  dunst = "${pkgs.dunst}/bin/dunstctl";
+  pkill = "${pkgs.procps}/bin/pkill";
+  signal = "${toString config.programs.waybar.settings.mainBar."custom/notifications".signal}";
+in
+(pkgs.writeShellScriptBin "dunst-toggle" ''
+  ${dunst} set-paused toggle
+  ${pkill} -RTMIN+${signal} waybar
+'')

modules/home/waybar/default.nix

@@ -56,6 +56,7 @@ let
   };
 
   # Add your custom modules here
+  "custom/notifications" = import ./modules/notifications.nix { inherit lib pkgs; };
   "custom/newsboat" = import ./modules/newsboat.nix { inherit lib pkgs; };
   "pulseaudio#input" = import ./modules/pulseaudio/input.nix { inherit lib pkgs; };
   "pulseaudio#output" = import ./modules/pulseaudio/output.nix { inherit lib pkgs; };
@@ -95,11 +96,13 @@ in
             "disk"
             "pulseaudio#input"
             "pulseaudio#output"
+            "custom/notifications"
             "tray"
           ];
 
           inherit
             "custom/newsboat"
+            "custom/notifications"
             "hyprland/language"
             "hyprland/workspaces"
             "pulseaudio#input"

modules/home/waybar/modules/notifications.nix

@@ -0,0 +1,27 @@
+{ pkgs, lib, ... }:
+
+let
+  inherit (lib) mkDefault;
+  dunst = "${pkgs.dunst}/bin/dunstctl";
+in
+{
+  format = mkDefault "{icon}";
+  format-icons = {
+    unmuted = mkDefault "";
+    muted = mkDefault "";
+  };
+  return-type = mkDefault "json";
+  exec = mkDefault (
+    pkgs.writeShellScript "notifications" ''
+      is_paused=$(${dunst} is-paused)
+      if [ "$is_paused" = "true" ]; then
+        echo '{"alt": "muted", "class": "muted"}'
+      else
+        echo '{"alt": "unmuted", "class": "unmuted"}'
+      fi
+    ''
+  );
+  on-click = mkDefault "dunst-toggle";
+  interval = mkDefault "once";
+  signal = mkDefault 12;
+}