--- a/mercurial/formatter.py	Tue Jul 23 19:14:16 2024 -0400
+++ b/mercurial/formatter.py	Tue Jul 23 19:20:22 2024 -0400
@@ -110,6 +110,7 @@
 import itertools
 import os
 import pickle
+import typing
 
 from .i18n import _
 from .node import (
@@ -118,6 +119,11 @@
 )
 from .thirdparty import attr
 
+# Force pytype to use the non-vendored package
+if typing.TYPE_CHECKING:
+    # noinspection PyPackageRequirements
+    import attr
+
 from . import (
     error,
     pycompat,