--- a/mercurial/cffi/bdiff.py Fri Mar 12 17:22:35 2021 -0500
+++ b/mercurial/cffi/bdiff.py Sat Mar 13 00:38:59 2021 -0500
@@ -10,7 +10,7 @@
import struct
from ..pure.bdiff import *
-from . import _bdiff
+from . import _bdiff # pytype: disable=import-error
ffi = _bdiff.ffi
lib = _bdiff.lib