wlx-overlay-s: add version test and update script

Signed-off-by: Sefa Eyeoglu <contact@scrumplex.net>

pkgs/by-name/wl/wlx-overlay-s/package.nix

@@ -7,13 +7,16 @@
 , fontconfig
 , libxkbcommon
 , makeWrapper
+, nix-update-script
 , openvr
 , openxr-loader
 , pipewire
 , pkg-config
 , pulseaudio
 , shaderc
+, testers
 , wayland
+, wlx-overlay-s
 , xorg
 }:
 
@@ -71,6 +74,12 @@ rustPlatform.buildRustPackage rec {
       --add-needed ${lib.getLib libxkbcommon}/lib/libxkbcommon.so.0
   '';
 
+  passthru = {
+    tests.testVersion = testers.testVersion { package = wlx-overlay-s; };
+
+    updateScript = nix-update-script { };
+  };
+
   meta = {
     description = "Wayland/X11 desktop overlay for SteamVR and OpenXR, Vulkan edition";
     homepage = "https://github.com/galister/wlx-overlay-s";