Change cache decorator to lru_cache

This fixes compatibility with Python 3.8, as cache decorator is only available since Python 3.9 and is an alias for lru_cache(maxsize=None) Internal-tag: [#53526] Signed-off-by: Krzysztof Obłonczek <[email protected]>
antmicro · Jan 9, 2024 · 5d1223f · 5d1223f
1 parent 6385a04
commit 5d1223f
Showing 1 changed file with 2 additions and 2 deletions.
diff --git a/fpga_topwrap/elaboratable_wrapper.py b/fpga_topwrap/elaboratable_wrapper.py
@@ -1,7 +1,7 @@
 # Copyright (C) 2023 Antmicro
 # SPDX-License-Identifier: Apache-2.0
 
-from functools import cache
+from functools import lru_cache
 from typing import Iterable, Mapping, Union
 
 from amaranth import *
@@ -48,7 +48,7 @@ def get_ports_hier(self) -> SignalMapping:
             "rst": self.rst,
         }
 
-    @cache
+    @lru_cache(maxsize=None)
     def _cached_wrapper(
         self, port_width: int, port_flow: wiring.Flow, name: str, port_name: str, iface_name: str
     ) -> WrapperPort: