qt5.qtgamepad: add darwin support

pkgs/development/libraries/qt-5/5.12/default.nix

@@ -162,7 +162,9 @@ let
       qtconnectivity = callPackage ../modules/qtconnectivity.nix {};
       qtdeclarative = callPackage ../modules/qtdeclarative.nix {};
       qtdoc = callPackage ../modules/qtdoc.nix {};
-      qtgamepad = callPackage ../modules/qtgamepad.nix {};
+      qtgamepad = callPackage ../modules/qtgamepad.nix {
+        inherit (darwin.apple_sdk.frameworks) GameController;
+      };
       qtgraphicaleffects = callPackage ../modules/qtgraphicaleffects.nix {};
       qtimageformats = callPackage ../modules/qtimageformats.nix {};
       qtlocation = callPackage ../modules/qtlocation.nix {};

pkgs/development/libraries/qt-5/5.14/default.nix

@@ -163,6 +163,9 @@ let
       qtconnectivity = callPackage ../modules/qtconnectivity.nix {};
       qtdeclarative = callPackage ../modules/qtdeclarative.nix {};
       qtdoc = callPackage ../modules/qtdoc.nix {};
+      qtgamepad = callPackage ../modules/qtgamepad.nix {
+        inherit (darwin.apple_sdk.frameworks) GameController;
+      };
       qtgraphicaleffects = callPackage ../modules/qtgraphicaleffects.nix {};
       qtimageformats = callPackage ../modules/qtimageformats.nix {};
       qtlocation = callPackage ../modules/qtlocation.nix {};

pkgs/development/libraries/qt-5/5.15/default.nix

@@ -125,7 +125,9 @@ let
       qtconnectivity = callPackage ../modules/qtconnectivity.nix {};
       qtdeclarative = callPackage ../modules/qtdeclarative.nix {};
       qtdoc = callPackage ../modules/qtdoc.nix {};
-      qtgamepad = callPackage ../modules/qtgamepad.nix {};
+      qtgamepad = callPackage ../modules/qtgamepad.nix {
+        inherit (darwin.apple_sdk.frameworks) GameController;
+      };
       qtgraphicaleffects = callPackage ../modules/qtgraphicaleffects.nix {};
       qtimageformats = callPackage ../modules/qtimageformats.nix {};
       qtlocation = callPackage ../modules/qtlocation.nix {};

pkgs/development/libraries/qt-5/modules/qtgamepad.nix

@@ -1,8 +1,9 @@
-{ qtModule, qtbase, qtdeclarative, pkg-config }:
+{ lib, stdenv, qtModule, qtbase, qtdeclarative, GameController, pkg-config }:
 
 qtModule {
   pname = "qtgamepad";
-  qtInputs = [ qtbase qtdeclarative ];
+  qtInputs = [ qtbase qtdeclarative ]
+    ++ lib.optional stdenv.isDarwin GameController;
   buildInputs = [ ];
   nativeBuildInputs = [ pkg-config ];
   outputs = [ "out" "dev" "bin" ];