macos(mc-rtc-magnum): do not link against MH_BUNDLE libraries

Author: arntanguy

pkgs/mc-rtc-magnum/standalone.nix

@@ -49,6 +49,14 @@ stdenv.mkDerivation {
       --set WAYLAND_DISPLAY ""
   '';
 
+  # FIXME upstream
+  postPatch = lib.optionalString stdenv.hostPlatform.isDarwin ''
+    # Remove Magnum runtime plugins from being hard-linked at compile time on macOS
+    substituteInPlace src/CMakeLists.txt \
+      --replace "MagnumPlugins::AnyImageImporter" "" \
+      --replace "MagnumPlugins::AnySceneImporter" ""
+  '';
+
   cmakeFlags = [
     "-DMAGNUM_WITH_PLUGINS_LIBDIR=${magnum-with-plugins}/lib/magnum/importers"
   ];