diff -r 0d612db7047c -r c59eb1560c44 mercurial/commandserver.py
--- a/mercurial/commandserver.py	Sun Oct 06 16:39:13 2019 -0400
+++ b/mercurial/commandserver.py	Sun Oct 06 16:55:18 2019 -0400
@@ -24,6 +24,7 @@
     from .thirdparty import selectors2 as selectors
 
 from .i18n import _
+from .pycompat import getattr
 from . import (
     encoding,
     error,