doomretro: fix build on darwin

pkgs/games/doom-ports/doomretro/default.nix

@@ -6,6 +6,7 @@
 , SDL2
 , SDL2_image
 , SDL2_mixer
+, Cocoa
 }:
 
 stdenv.mkDerivation (finalAttrs: {
@@ -28,6 +29,8 @@ stdenv.mkDerivation (finalAttrs: {
     SDL2
     SDL2_image
     SDL2_mixer
+  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
+    Cocoa
   ];
 
   meta = {

pkgs/top-level/all-packages.nix

@@ -35942,7 +35942,9 @@ with pkgs;
 
   doomseeker = qt5.callPackage ../games/doom-ports/doomseeker { };
 
-  doomretro = callPackage ../games/doom-ports/doomretro { };
+  doomretro = callPackage ../games/doom-ports/doomretro {
+    inherit (darwin.apple_sdk.frameworks) Cocoa;
+  };
 
   chocolate-doom = callPackage ../games/doom-ports/chocolate-doom { };