virtscreen: unbreak

pkgs/tools/admin/virtscreen/default.nix

@@ -1,4 +1,12 @@
-{ lib, stdenv, fetchFromGitHub, python3Packages, x11vnc, xrandr, libGL }:
+{ lib
+, stdenv
+, fetchFromGitHub
+, python3Packages
+, x11vnc
+, xrandr
+, libGL
+, qt5
+}:
 
 python3Packages.buildPythonApplication rec {
   pname = "virtscreen";
@@ -16,6 +24,8 @@ python3Packages.buildPythonApplication rec {
     sha256 = "005qach6phz8w17k8kqmyd647c6jkfybczybxq0yxi5ik0s91a08";
   };
 
+  nativeBuildInputs = [ qt5.wrapQtAppsHook ];
+
   propagatedBuildInputs = with python3Packages; [
     netifaces
     pyqt5
@@ -24,10 +34,17 @@ python3Packages.buildPythonApplication rec {
     xrandr
   ];
 
-  postPatch = let
-    ext = stdenv.hostPlatform.extensions.sharedLibrary; in ''
+  dontWrapQtApps = true;
+
+  makeWrapperArgs = [
+    "\${qtWrapperArgs[@]}"
+    # import Qt.labs.platform failed without this
+    "--prefix QML2_IMPORT_PATH : ${qt5.qtquickcontrols2.bin}/${qt5.qtbase.qtQmlPrefix}"
+  ];
+
+  postPatch = ''
     substituteInPlace virtscreen/__main__.py \
-      --replace "'GL'" "'${libGL}/lib/libGL${ext}'" \
+      --replace "'GL'" "'${libGL}/lib/libGL${stdenv.hostPlatform.extensions.sharedLibrary}'" \
   '';
 
   meta = with lib; {