prismlauncher-unwrapped: add patch to make MangoHud 0.8 work correctly (#384791)

pkgs/by-name/pr/prismlauncher-unwrapped/package.nix

@@ -5,6 +5,7 @@
   cmake,
   cmark,
   extra-cmake-modules,
+  fetchpatch,
   gamemode,
   ghc_filesystem,
   jdk17,
@@ -14,11 +15,9 @@
   stripJavaArchivesHook,
   tomlplusplus,
   zlib,
-
   msaClientID ? null,
   gamemodeSupport ? stdenv.hostPlatform.isLinux,
 }:
-
 let
   libnbtplusplus = fetchFromGitHub {
     owner = "PrismLauncher";
@@ -27,11 +26,9 @@ let
     hash = "sha256-yy0q+bky80LtK1GWzz7qpM+aAGrOqLuewbid8WT1ilk=";
   };
 in
-
 assert lib.assertMsg (
   gamemodeSupport -> stdenv.hostPlatform.isLinux
 ) "gamemodeSupport is only available on Linux.";
-
 stdenv.mkDerivation (finalAttrs: {
   pname = "prismlauncher-unwrapped";
   version = "9.2";
@@ -87,6 +84,15 @@ stdenv.mkDerivation (finalAttrs: {
       (lib.cmakeFeature "CMAKE_INSTALL_PREFIX" "${placeholder "out"}/Applications/")
     ];
 
+  patches = [
+    # This patch allows Mangohud 0.8 to run correctly with Prism Launcher.
+    # This should be removed on the next Prism Launcher release.
+    (fetchpatch {
+      url = "https://github.com/PrismLauncher/PrismLauncher/commit/3295b0717a8c4805022eccb74fee2304361d8dab.patch";
+      hash = "sha256-A7DrmI00dFUNZLoMFDfym7e5rSFg6V4/MjVxAnQwT6E=";
+    })
+  ];
+
   doCheck = true;
 
   dontWrapQtApps = true;