fix: swift toolchain path on linux

Kernel/CMakeLists.txt

@@ -25,14 +25,18 @@ elseif(CMAKE_HOST_SYSTEM_NAME STREQUAL "Darwin")
         endif()
     endforeach()
 else()
-    # Linux: find swiftc in PATH, derive resource dir from its location
+    # Linux: find swiftc in PATH
     find_program(_SWIFTC_EXE swiftc)
     if(_SWIFTC_EXE)
         get_filename_component(_SWIFTC_BIN "${_SWIFTC_EXE}" DIRECTORY)
         get_filename_component(_SWIFTC_USR "${_SWIFTC_BIN}" DIRECTORY)
+        
         if(EXISTS "${_SWIFTC_USR}/lib/swift/embedded")
             set(SWIFTC             "${_SWIFTC_EXE}")
             set(SWIFT_RESOURCE_DIR "${_SWIFTC_USR}/lib/swift")
+        elseif(EXISTS "${_SWIFTC_USR}/lib/swift/lib/swift/embedded")
+            set(SWIFTC             "${_SWIFTC_EXE}")
+            set(SWIFT_RESOURCE_DIR "${_SWIFTC_USR}/lib/swift/lib/swift")
         endif()
     endif()
 endif()