mercurial/utils/procutil.py

--- a/mercurial/utils/procutil.py	Sun Oct 06 13:17:19 2019 -0400
+++ b/mercurial/utils/procutil.py	Sun Oct 06 13:28:56 2019 -0400
@@ -20,6 +20,7 @@
 import time
 
 from ..i18n import _
+from ..pycompat import open
 
 from .. import (
     encoding,