--- a/mercurial/pure/osutil.py	Tue May 02 21:04:40 2017 +0900
+++ b/mercurial/pure/osutil.py	Tue May 02 21:08:38 2017 +0900
@@ -71,7 +71,7 @@
 ffi = None
 if modulepolicy not in policynocffi and pycompat.sysplatform == 'darwin':
     try:
-        from _osutil_cffi import ffi, lib
+        from ..cffi._osutil import ffi, lib
     except ImportError:
         if modulepolicy == 'cffi': # strict cffi import
             raise