update

Author: justusschock

src/lightning/fabric/plugins/precision/bitsandbytes.py

@@ -15,11 +15,14 @@
 from typing import Any, Literal, Optional
 
 import torch
+from lightning_utilities.core.imports import RequirementCache
 from typing_extensions import override
 
 from lightning.fabric.plugins.precision.precision import Precision
 from lightning.fabric.utilities.imports import _raise_enterprise_not_available
 
+_BITSANDBYTES_AVAILABLE = RequirementCache("bitsandbytes")
+
 
 class BitsandbytesPrecision(Precision):
     """Plugin for quantizing weights with `bitsandbytes <https://github.com/bitsandbytes-foundation/bitsandbytes>`__.