From 7ab003c746c1a889f2072d71ad5e0b068a6c2fba Mon Sep 17 00:00:00 2001
From: Erik Montnemery <erik@montnemery.com>
Date: Wed, 13 Dec 2023 15:22:29 +0100
Subject: [PATCH] Avoid mutating entity descriptions in lidarr (#105628)

---
 homeassistant/components/lidarr/sensor.py | 15 ++++++++-------
 1 file changed, 8 insertions(+), 7 deletions(-)

diff --git a/homeassistant/components/lidarr/sensor.py b/homeassistant/components/lidarr/sensor.py
index 1a2930c8051..552bc35768f 100644
--- a/homeassistant/components/lidarr/sensor.py
+++ b/homeassistant/components/lidarr/sensor.py
@@ -2,8 +2,7 @@
 from __future__ import annotations
 
 from collections.abc import Callable
-from copy import deepcopy
-from dataclasses import dataclass
+import dataclasses
 from typing import Any, Generic
 
 from aiopyarr import LidarrQueue, LidarrQueueItem, LidarrRootFolder
@@ -40,21 +39,23 @@ def get_modified_description(
     description: LidarrSensorEntityDescription[T], mount: LidarrRootFolder
 ) -> tuple[LidarrSensorEntityDescription[T], str]:
     """Return modified description and folder name."""
-    desc = deepcopy(description)
     name = mount.path.rsplit("/")[-1].rsplit("\\")[-1]
-    desc.key = f"{description.key}_{name}"
-    desc.name = f"{description.name} {name}".capitalize()
+    desc = dataclasses.replace(
+        description,
+        key=f"{description.key}_{name}",
+        name=f"{description.name} {name}".capitalize(),
+    )
     return desc, name
 
 
-@dataclass
+@dataclasses.dataclass
 class LidarrSensorEntityDescriptionMixIn(Generic[T]):
     """Mixin for required keys."""
 
     value_fn: Callable[[T, str], str | int]
 
 
-@dataclass
+@dataclasses.dataclass
 class LidarrSensorEntityDescription(
     SensorEntityDescription, LidarrSensorEntityDescriptionMixIn[T], Generic[T]
 ):