Some changes

home-manager/sway.nix

@@ -1,13 +1,31 @@
-{pkgs, ...}: {
+{
+  pkgs,
+  lib,
+  ...
+}: {
   wayland.windowManager.sway = {
     enable = true;
     package = pkgs.swayfx;
-    config = {
+    config = rec {
       modifier = "Mod4";
-      # Use kitty as default terminal
-      terminal = "kitty";
-      startup = [
-      ];
+      terminal = "kgx";
+      window = {
+        titlebar = false;
+      };
+      bars = [];
+
+      keybindings = lib.mkOptionDefault {
+        "${modifier}+button4" = "workspace prev";
+        "${modifier}+button5" = "workspace next";
+        "${modifier}+t" = "exec ${terminal}";
+        "${modifier}+q" = "kill";
+        "XF86AudioRaiseVolume" = "swayosd --output-volume raise";
+        "XF86AudioLowerVolume" = "swayosd --output-volume lower";
+        "XF86MonBrightnessUp" = "swayosd --output-brightness raise";
+        "XF86MonBrightnessDown" = "swayosd --brightness lower";
+      };
     };
   };
+
+  services.swayosd.enable = true;
 }