lix-game: build more variants; build PNG32s on any platform

README.md

@@ -61,9 +61,9 @@ On macOS, upstream is affected by a [bug](https://github.com/SimonN/LixD/issues/
 
 However, as far as I know there's no guarantee that NSImage will keep treating true-color images the same way in future macOS versions, meaning this workaround could break eventually - and it doesn't do anything for custom images installed in `${XDG_DATA_HOME:-$HOME/.local/share}/lix`.
 
-Therefore, I also have an alternative workaround implemented. If you set `convertImagesToTrueColor` to `false`, Lix will instead be linked against a custom build of Allegro 5 which has the macOS native image loader disabled, and instead uses the same `libpng`-based method as on Linux and Windows, avoiding the bug. To prevent this as well (for instance, to test out the bug's behavior on a given version of macOS), additionally set `disableNativeImageLoader` to `false`.
+Therefore, I also have an alternative workaround implemented. If you set `convertImagesToTrueColor` to `false`, Lix will instead be linked against a custom build of Allegro 5 which has the macOS native image loader disabled, and instead uses the same `libpng`-based method as on Linux and Windows, avoiding the bug. To prevent this as well (for instance, to test out the bug's behavior on a given version of macOS), additionally set `disableNativeImageLoader` to `false` (or just use `lix-game-libpng`).
 
-You can also set `disableNativeImageLoader` to `"CIImage"` to test out @pedro-w's [CIImage-based loader](https://github.com/liballeg/allegro5/issues/1531#issuecomment-1950198051).
+You can also set `disableNativeImageLoader` to `"CIImage"` (or use `lix-game-CIImage`) to test out @pedro-w's [CIImage-based loader](https://github.com/liballeg/allegro5/issues/1531#issuecomment-1950198051).
 
 #### SimonN/LixD#128 - NaOH's title screen, include hi-res instead of 640x480
 

default.nix

@@ -38,6 +38,21 @@ in {
     lix-game-packages = callPackage ./pkgs/lix-game {};
     lix-game = self.lix-game-packages.game;
     lix-game-server = self.lix-game-packages.server;
+    lix-game-libpng = if pkgs.hostPlatform.isDarwin then (self.lix-game-packages.overrideScope (self: super: {
+        convertImagesToTrueColor = false;
+    })).game else lix-game;
+    lix-game-CIImage = if pkgs.hostPlatform.isDarwin then (self.lix-game-packages.overrideScope (self: super: {
+        convertImagesToTrueColor = false;
+        disableNativeImageLoader = "CIImage";
+    })).game else lix-game;
+    _ciOnly.lix-game = {
+        lix-game-assets = (self.lix-game-packages.overrideScope (self: super: {
+            convertImagesToTrueColor = false;
+        })).assets;
+        lix-game-assets-PNG32 = (self.lix-game-packages.overrideScope (self: super: {
+            convertImagesToTrueColor = true;
+        })).assets;
+    };
 
     xscorch = callPackage ./pkgs/xscorch {};