Prebuild - update scsynth to v3.13 universal build

app/external/CMakeLists.txt

@@ -105,9 +105,9 @@ if(WIN32)
 elseif(${CMAKE_SYSTEM_NAME} MATCHES Darwin) # macOS
   add_custom_command(
     TARGET ExternalsBuilder PRE_BUILD
-    COMMAND ${CMAKE_COMMAND} -E copy_directory ${CMAKE_CURRENT_SOURCE_DIR}/../../prebuilt/macos/x64/ ${CMAKE_CURRENT_SOURCE_DIR}/../server/native/
-    COMMAND ${CMAKE_COMMAND} -E create_symlink ${CMAKE_CURRENT_SOURCE_DIR}/../server/native/supercollider/scsynth ${CMAKE_CURRENT_SOURCE_DIR}/../server/native/scsynth
-    COMMAND ${CMAKE_COMMAND} -E copy_directory ${CMAKE_CURRENT_SOURCE_DIR}/../server/native/supercollider/extra-plugins/ ${CMAKE_CURRENT_SOURCE_DIR}/../server/native/supercollider/plugins/
-    COMMAND ${CMAKE_COMMAND} -E rm -rf ${CMAKE_CURRENT_SOURCE_DIR}/../server/native/supercollider/extra-plugins
+    COMMAND ${CMAKE_COMMAND} -E copy_directory ${CMAKE_CURRENT_SOURCE_DIR}/../../prebuilt/macos/universal/ ${CMAKE_CURRENT_SOURCE_DIR}/../server/native/
+    COMMAND ${CMAKE_COMMAND} -E create_symlink supercollider/Resources/scsynth ${CMAKE_CURRENT_SOURCE_DIR}/../server/native/scsynth
+    COMMAND ${CMAKE_COMMAND} -E copy_directory ${CMAKE_CURRENT_SOURCE_DIR}/../server/native/supercollider/Resources/extra-plugins/ ${CMAKE_CURRENT_SOURCE_DIR}/../server/native/supercollider/Resources/plugins/
+    COMMAND ${CMAKE_COMMAND} -E rm -rf ${CMAKE_CURRENT_SOURCE_DIR}/../server/native/supercollider/Resources/extra-plugins
   )
 endif()

app/server/ruby/bin/daemon.rb

@@ -1069,8 +1069,12 @@ class ScsynthBooter < ProcessBooter
         }.freeze
         when :windows
           {
-          "-U" => Paths.scsynth_windows_plugin_path
-        }.freeze
+            "-U" => Paths.scsynth_windows_plugin_path
+          }.freeze
+        when :macos
+          {
+            "-U" => Paths.scsynth_macos_plugin_path
+          }.freeze
         else
           {
         }.freeze

app/server/ruby/paths.rb

@@ -378,6 +378,10 @@ def self.scsynth_windows_plugin_path
       File.absolute_path("#{native_path}/plugins")
     end
 
+    def self.scsynth_macos_plugin_path
+      File.absolute_path("#{native_path}/supercollider/Resources/plugins")
+    end
+
     def self.scsynth_raspberry_plugin_path
       "/usr/lib/SuperCollider/plugins"
     end