space-cadet-pinball: improve packaging

* Fix the build on Darwin
* Build an app bundle like the upstream releases
* Make the game find its assets without a wrapper and install them in
  the appropriate location

pkgs/by-name/sp/space-cadet-pinball/package.nix

@@ -6,21 +6,19 @@
   cmake,
   SDL2,
   SDL2_mixer,
-  Cocoa,
-  unrar-wrapper,
-  makeWrapper,
+  unrar,
 }:
 
 let
-  assets =
-    (fetchzip {
+  assets = fetchzip {
     url = "https://archive.org/download/SpaceCadet_Plus95/Space_Cadet.rar";
-      sha256 = "sha256-fC+zsR8BY6vXpUkVd6i1jF0IZZxVKVvNi6VWCKT+pA4=";
+    hash = "sha256-fC+zsR8BY6vXpUkVd6i1jF0IZZxVKVvNi6VWCKT+pA4=";
     stripRoot = false;
-    }).overrideAttrs
-      (old: {
-        nativeBuildInputs = old.nativeBuildInputs ++ [ unrar-wrapper ];
-      });
+    nativeBuildInputs = [ unrar ];
+  };
+  darwinApp = "$out/Applications/SpaceCadetPinball.app/Contents";
+  assetsDest =
+    if stdenv.hostPlatform.isDarwin then darwinApp + "/Resources" else "$out/share/SpaceCadetPinball";
 in
 stdenv.mkDerivation rec {
   pname = "SpaceCadetPinball";
@@ -28,49 +26,61 @@ stdenv.mkDerivation rec {
 
   src = fetchFromGitHub {
     owner = "k4zmu2a";
-    repo = pname;
+    repo = "SpaceCadetPinball";
     rev = "Release_${version}";
     hash = "sha256-W2P7Txv3RtmKhQ5c0+b4ghf+OMsN+ydUZt+6tB+LClM=";
   };
 
-  nativeBuildInputs = [
-    cmake
-    makeWrapper
-  ];
+  nativeBuildInputs = [ cmake ];
   buildInputs = [
     SDL2
     SDL2_mixer
-  ] ++ lib.optional stdenv.hostPlatform.isDarwin Cocoa;
+  ];
 
-  # Darwin needs a custom installphase since it is excluded from the cmake install
+  postPatch = ''
+    # Change the hardcoded FHS assets path
+    substituteInPlace SpaceCadetPinball/pch.h \
+      --replace-fail /usr/share ${placeholder "out"}/share
+    # Disable building a universal binary on Darwin, otherwise the cc wrapper passing -arch breaks the build
+    substituteInPlace CMakeLists.txt \
+      --replace-fail "arm64;x86_64" ""
+  '';
+
+  # Darwin needs a custom installPhase since it is excluded from the cmake install
   # https://github.com/k4zmu2a/SpaceCadetPinball/blob/0f88e43ba261bc21fa5c3ef9d44969a2a079d0de/CMakeLists.txt#L221
+  # This builds a bundle similar to what upstream's build script produces
+  # https://github.com/k4zmu2a/SpaceCadetPinball/blob/cb9b7b886244a27773f66b0b19fdc2998392565e/build-mac-app.sh
   installPhase = lib.optionalString stdenv.hostPlatform.isDarwin ''
     runHook preInstall
-    mkdir -p $out/bin
-    install ../bin/SpaceCadetPinball $out/bin
+    install -D ../bin/SpaceCadetPinball -t ${darwinApp}/MacOS
+    install -Dm644 ../Platform/macOS/SpaceCadetPinball.icns -t ${darwinApp}/Resources
+    substitute ../Platform/macOS/Info.plist ${darwinApp}/Info.plist \
+      --replace-fail CHANGEME_SW_VERSION ${version}
+    echo -n "APPL????" > ${darwinApp}/PkgInfo
     runHook postInstall
   '';
 
+  # The game uses SDL_GetBasePath to find the assets directory.
+  # On Darwin, this will return Resources/ inside the bundle,
+  # on other platforms, the fallback path the game checks is used instead.
   postInstall = ''
-    mkdir -p $out/lib/SpaceCadetPinball
-    install ${assets}/*.{DAT,DOC,MID,BMP,INF} ${assets}/Sounds/*.WAV $out/lib/SpaceCadetPinball
-
-    # Assets are loaded from the directory of the program is stored in
-    # https://github.com/k4zmu2a/SpaceCadetPinball/blob/de13d4e326b2dfa8e6dfb59815c0a8b9657f942d/SpaceCadetPinball/winmain.cpp#L119
-    mv $out/bin/SpaceCadetPinball $out/lib/SpaceCadetPinball
-    makeWrapper $out/lib/SpaceCadetPinball/SpaceCadetPinball $out/bin/SpaceCadetPinball
+    install -Dm644 ${assets}/*.{DAT,DOC,MID,BMP,INF} \
+      ${assets}/Sounds/*.WAV -t ${assetsDest}
   '';
 
-  meta = with lib; {
+  meta = {
     description = "Reverse engineering of 3D Pinball for Windows – Space Cadet, a game bundled with Windows";
     homepage = "https://github.com/k4zmu2a/SpaceCadetPinball";
     # The assets are unfree while the code is labeled as MIT
-    license = with licenses; [
+    license = with lib.licenses; [
       unfree
       mit
     ];
-    maintainers = [ maintainers.hqurve ];
-    platforms = platforms.all;
+    maintainers = with lib.maintainers; [
+      hqurve
+      nadiaholmquist
+    ];
+    platforms = lib.platforms.all;
     mainProgram = "SpaceCadetPinball";
   };
 }

pkgs/top-level/all-packages.nix

@@ -17347,10 +17347,6 @@ with pkgs;
     buildShareware = true;
   };
 
-  space-cadet-pinball = callPackage ../by-name/sp/space-cadet-pinball/package.nix {
-    inherit (darwin.apple_sdk.frameworks) Cocoa;
-  };
-
   starsector = callPackage ../games/starsector {
     openjdk = openjdk8;
   };