fix variance

Author: jonathandung

stdlib/_heapq.pyi

@@ -1,20 +1,17 @@
 import sys
-from _typeshed import (  # All type variable use in this module requires comparability.
-    SupportsRichComparison,
-    SupportsRichComparisonT as _T,
-)
+from _typeshed import SupportsRichComparisonT as _T  # All type variable use in this module requires comparability.
 from typing import Final
 
 __about__: Final[str]
 
-def heapify(heap: list[SupportsRichComparison], /) -> None: ...
+def heapify(heap: list[_T], /) -> None: ...  # To work around the fact that list is invariant
 def heappop(heap: list[_T], /) -> _T: ...
 def heappush(heap: list[_T], item: _T, /) -> None: ...
 def heappushpop(heap: list[_T], item: _T, /) -> _T: ...
 def heapreplace(heap: list[_T], item: _T, /) -> _T: ...
 
 if sys.version_info >= (3, 14):
-    def heapify_max(heap: list[SupportsRichComparison], /) -> None: ...
+    def heapify_max(heap: list[_T], /) -> None: ...
     def heappop_max(heap: list[_T], /) -> _T: ...
     def heappush_max(heap: list[_T], item: _T, /) -> None: ...
     def heappushpop_max(heap: list[_T], item: _T, /) -> _T: ...