Add a cataclysm-dda patch

flake.nix

@@ -116,6 +116,7 @@
           # Some program adjustments
           (import ./overlays/mosh.nix)
           (import ./overlays/logisim.nix)
+          (import ./overlays/cataclysm-dda.nix)
         ];
       };
 

malte/home.nix

@@ -27,17 +27,6 @@ let
         wrapProgram $out/bin/${name} --add-flags "--enable-features=UseOzonePlatform --ozone-platform=wayland"
       '';
 
-  lockfile = builtins.fromJSON (builtins.readFile ../flake.lock);
-
-  my-cataclysm-dda-git = (pkgs.bleeding.cataclysm-dda-git.override {
-    useXdgDir = true;
-    version = lockfile.nodes.cataclysm-dda.locked.rev;
-    rev = lockfile.nodes.cataclysm-dda.locked.rev;
-    sha256 = lockfile.nodes.cataclysm-dda.locked.narHash;
-  }).overrideAttrs (_: {
-    enableParallelBuilding = true;
-  });
-
 in {
 
   imports = [
@@ -115,7 +104,7 @@ in {
           xdg_utils
           xournalpp
           youtube-dl
-          my-cataclysm-dda-git
+          cataclysm-dda-git
         ] ++ (if config.useLegacyX11 then
           [
             # X11-only

overlays/cataclysm-dda.nix

@@ -0,0 +1,14 @@
+self: super:
+
+let lock = builtins.fromJSON (builtins.readFile ../flake.lock);
+in {
+  cataclysm-dda-git = (super.bleeding.cataclysm-dda-git.override {
+    useXdgDir = true;
+    version = lock.nodes.cataclysm-dda.locked.rev;
+    rev = lock.nodes.cataclysm-dda.locked.rev;
+    sha256 = lock.nodes.cataclysm-dda.locked.narHash;
+  }).overrideAttrs (old: {
+    enableParallelBuilding = true;
+    patches = (old.patches or []) ++ [ ../patches/cdda-wayland-sdl-fix.patch ];
+  });
+}

patches/cdda-wayland-sdl-fix.patch

@@ -0,0 +1,17 @@
+diff --git a/src/sdltiles.cpp b/src/sdltiles.cpp
+index d7a68d65d0..eef7bef83e 100644
+--- a/src/sdltiles.cpp
++++ b/src/sdltiles.cpp
+@@ -545,11 +545,11 @@ void refresh_display()
+     // Select default target (the window), copy rendered buffer
+     // there, present it, select the buffer as target again.
+     SetRenderTarget( renderer, nullptr );
++    RenderClear( renderer );
+ #if defined(__ANDROID__)
+     SDL_Rect dstrect = get_android_render_rect( TERMINAL_WIDTH * fontwidth,
+                        TERMINAL_HEIGHT * fontheight );
+     SetRenderDrawColor( renderer, 0, 0, 0, 255 );
+-    RenderClear( renderer );
+     RenderCopy( renderer, display_buffer, NULL, &dstrect );
+ #else
+     RenderCopy( renderer, display_buffer, nullptr, nullptr );