fix: plain-int check pre-coercion everywhere; purity guard scans alias leaf names at any level

2026-09-14 10:51:21 -04:00
parent 6398bd525a
commit deb409175a
2 changed files with 52 additions and 12 deletions
@@ -113,7 +113,9 @@ def _validate_weekday_set(weekday_set) -> frozenset[int]:
    """
    if isinstance(weekday_set, (list, tuple)):
        for entry in weekday_set:
-            if isinstance(entry, bool) or not isinstance(entry, int):
+            # _is_plain_int: bool and int subclasses (potentially
+            # unhashable) are rejected before set() coercion.
+            if not _is_plain_int(entry):
                raise RuleValidationError(
                    f"weekday_set entries must be plain integers, got "
                    f"{entry!r}"