ruffle: build on darwin

pkgs/applications/emulators/ruffle/default.nix

@@ -6,6 +6,7 @@
   pkg-config,
   python3,
   rustPlatform,
+  stdenv,
   lib,
   wayland,
   xorg,
@@ -18,6 +19,7 @@
   gsettings-desktop-schemas,
   glib,
   libxkbcommon,
+  darwin,
 }:
 
 let
@@ -34,56 +36,62 @@ rustPlatform.buildRustPackage {
     hash = "sha256-WfoYQku1NFhvWyqeSVKtsMMEyUA97YFD7cvdn4XYIPI=";
   };
 
-  nativeBuildInputs = [
-    glib
-    gsettings-desktop-schemas
-    jre_minimal
-    makeWrapper
-    pkg-config
-    python3
-    wrapGAppsHook3
-  ];
+  nativeBuildInputs =
+    [ jre_minimal ]
+    ++ lib.optionals stdenv.isLinux [
+      glib
+      gsettings-desktop-schemas
+      makeWrapper
+      pkg-config
+      python3
+      wrapGAppsHook3
+    ]
+    ++ lib.optionals stdenv.isDarwin [ rustPlatform.bindgenHook ];
 
-  buildInputs = [
-    alsa-lib
-    cairo
-    gtk3
-    openssl
-    wayland
-    xorg.libX11
-    xorg.libXcursor
-    xorg.libXrandr
-    xorg.libXi
-    xorg.libxcb
-    xorg.libXrender
-    vulkan-loader
-    udev
-  ];
+  buildInputs =
+    lib.optionals stdenv.isLinux [
+      alsa-lib
+      cairo
+      gtk3
+      openssl
+      wayland
+      xorg.libX11
+      xorg.libXcursor
+      xorg.libXrandr
+      xorg.libXi
+      xorg.libxcb
+      xorg.libXrender
+      vulkan-loader
+      udev
+    ]
+    ++ lib.optionals stdenv.isDarwin [ darwin.apple_sdk.frameworks.AppKit ];
 
   dontWrapGApps = true;
 
-  preFixup = ''
+  preFixup = lib.optionalString stdenv.isLinux ''
     patchelf $out/bin/ruffle_desktop \
       --add-needed libxkbcommon-x11.so \
       --add-needed libwayland-client.so \
       --add-rpath ${libxkbcommon}/lib:${wayland}/lib
   '';
 
-  postFixup = ''
-    # This name is too generic
-    mv $out/bin/exporter $out/bin/ruffle_exporter
+  postFixup =
+    ''
+      # This name is too generic
+      mv $out/bin/exporter $out/bin/ruffle_exporter
+    ''
+    + lib.optionalString stdenv.isLinux ''
+      vulkanWrapperArgs+=(
+        --prefix LD_LIBRARY_PATH ':' ${vulkan-loader}/lib
+      )
 
-    vulkanWrapperArgs+=(
-      --prefix LD_LIBRARY_PATH ':' ${vulkan-loader}/lib
-    )
+      wrapProgram $out/bin/ruffle_exporter \
+        "''${vulkanWrapperArgs[@]}"
 
-    wrapProgram $out/bin/ruffle_exporter \
-      "''${vulkanWrapperArgs[@]}"
-
-    wrapProgram $out/bin/ruffle_desktop \
-      "''${vulkanWrapperArgs[@]}" \
-      "''${gappsWrapperArgs[@]}"
-  '';
+      wrapProgram $out/bin/ruffle_desktop \
+        "''${vulkanWrapperArgs[@]}" \
+        "''${gappsWrapperArgs[@]}"
+    '';
 
   cargoBuildFlags = [ "--workspace" ];
 
@@ -109,7 +117,7 @@ rustPlatform.buildRustPackage {
       govanify
       jchw
     ];
-    platforms = platforms.linux;
+    platforms = platforms.linux ++ platforms.darwin;
     mainProgram = "ruffle_desktop";
   };
 }