macos: Fix vfs bug. PR AeonLucid#63

Author: enovella

src/androidemu/vfs/file_system.py

@@ -55,12 +55,11 @@ def translate_path(self, filename) -> pathlib.Path:
 
         file_path = self._root_path.joinpath(filename).resolve()
 
-        # is_relative_to is new in version 3.9
-        if not hasattr(file_path, 'is_relative_to'):
+        # when system is macos, the pathlib.Path return was PosixPath, The PosixPath object does not have the is_relative_to method
+        if os.name == "posix":
             try:
                 file_path.relative_to(self._root_path)
             except:
-                # if file_path is not in the subpath of self._root_path, ValueError is raised
                 raise RuntimeError("Emulator tried to read outside vfs ('%s' not in '%s')." % (file_path, self._root_path))
         else:
             if not file_path.is_relative_to(self._root_path):