From 557c7ce0bfae5087d1f15914fa827b3f0a942de4 Mon Sep 17 00:00:00 2001
From: Yusuke Kadowaki <yusuke.kadowaki.1231@gmail.com>
Date: Sun, 30 Oct 2022 01:06:13 +0900
Subject: [PATCH] Fix Literal for older version

---
 src/_pytest/tmpdir.py | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/src/_pytest/tmpdir.py b/src/_pytest/tmpdir.py
index 52355dff7..ebdb7fe5e 100644
--- a/src/_pytest/tmpdir.py
+++ b/src/_pytest/tmpdir.py
@@ -13,6 +13,8 @@ from typing import Union
 if TYPE_CHECKING:
     from typing_extensions import Literal
 
+    RetentionType = Literal["all", "failed", "none"]
+
 
 import attr
 from _pytest.config.argparsing import Parser
@@ -45,13 +47,13 @@ class TempPathFactory:
     _trace = attr.ib()
     _basetemp = attr.ib(type=Optional[Path])
     _retention_count = attr.ib(type=int)
-    _retention_policy = attr.ib(type=RetentionPolicy)
+    _retention_policy = attr.ib(type="RetentionType")
 
     def __init__(
         self,
         given_basetemp: Optional[Path],
         retention_count: int,
-        retention_policy: RetentionPolicy,
+        retention_policy: "RetentionType",
         trace,
         basetemp: Optional[Path] = None,
         *,