Added flatpak support

nixos/gaming.nix

@@ -0,0 +1,13 @@
+{ config, pkgs, lib, ... }:
+
+{
+
+  programs.steam = {
+    enable = true;
+    remotePlay.openFirewall = true; # Open ports in the firewall for Steam Remote Play
+  };
+
+  environment.systemPackages = with pkgs; [
+  ];
+}
+

nixos/kde-desktop.nix

@@ -8,6 +8,10 @@
   services.displayManager.sddm.wayland.enable = true;
   services.displayManager.defaultSession = "plasma";
 
+  services.flatpak.enable = true;
+  services.packagekit.enable = true;
+  services.fwupd.enable = true;
+
   boot.plymouth = {
     enable = false;
     themePackages = with pkgs; [ (adi1090x-plymouth-themes.override {selected_themes = [ "rings" ]; }) ];
@@ -22,6 +26,7 @@
   environment.systemPackages = with pkgs; [
     pkgs.krfb
     pkgs.krdc
+    pkgs.discover
     pkgs.libreoffice-qt
     pkgs.filelight
     pkgs.hunspell