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python · ilevkivskyi · May 6, 2025 · Apr 28, 2025 · Apr 28, 2025 · Apr 28, 2025
commit e4126864af181aeade1ee4ccf10b144888ce39b9
diff --git a/mypy/constraints.py b/mypy/constraints.py
@@ -556,6 +556,9 @@ def any_constraints(options: list[list[Constraint] | None], *, eager: bool) -> l
         return any_constraints(filtered_options, eager=eager)
 
     # Try harder: if that didn't work, try to strip typevars that aren't meta vars.
+    # Note this is what we would always do, but unfortunately some callers may not
+    # set the meta var status correctly (for historical reasons), so we use this as
+    # a fallback only.
     filtered_options = [exclude_non_meta_vars(o) for o in options]
     if filtered_options != options:
         return any_constraints(filtered_options, eager=eager)