From e8b6d1e508004ec554323ec21b0746aa8f5a488c Mon Sep 17 00:00:00 2001
From: "Jason R. Coombs" <jaraco@jaraco.com>
Date: Thu, 14 Mar 2024 09:56:51 -0400
Subject: [PATCH 1/3] Make MetadataPathFinder a proper classmethod.

---
 Lib/importlib/metadata/__init__.py | 1 +
 1 file changed, 1 insertion(+)

diff --git a/Lib/importlib/metadata/__init__.py b/Lib/importlib/metadata/__init__.py
index c612fbefee2e80..41c2a4a6088b5d 100644
--- a/Lib/importlib/metadata/__init__.py
+++ b/Lib/importlib/metadata/__init__.py
@@ -797,6 +797,7 @@ def _search_paths(cls, name, paths):
             path.search(prepared) for path in map(FastPath, paths)
         )
 
+    @classmethod
     def invalidate_caches(cls) -> None:
         FastPath.__new__.cache_clear()
 

From 9fad4615fa05e0f68ccf3b79316f67c05e090ce8 Mon Sep 17 00:00:00 2001
From: "Jason R. Coombs" <jaraco@jaraco.com>
Date: Wed, 13 Mar 2024 14:59:17 -0400
Subject: [PATCH 2/3] In PathFinder.invalidate_caches, also invoke
 MetadataPathFinder.invalidate_caches.

---
 Lib/importlib/_bootstrap_external.py | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/Lib/importlib/_bootstrap_external.py b/Lib/importlib/_bootstrap_external.py
index 46ddceed07b0d4..b26be8583d0f81 100644
--- a/Lib/importlib/_bootstrap_external.py
+++ b/Lib/importlib/_bootstrap_external.py
@@ -1470,6 +1470,9 @@ def invalidate_caches():
         # https://bugs.python.org/issue45703
         _NamespacePath._epoch += 1
 
+        from importlib.metadata import MetadataPathFinder
+        MetadataPathFinder.invalidate_caches()
+
     @staticmethod
     def _path_hooks(path):
         """Search sys.path_hooks for a finder for 'path'."""

From 2030b1cb409d6c158b69ed82d2ae1908e1559263 Mon Sep 17 00:00:00 2001
From: "Jason R. Coombs" <jaraco@jaraco.com>
Date: Thu, 14 Mar 2024 10:01:29 -0400
Subject: [PATCH 3/3] Add blurb

---
 .../next/Library/2024-03-14-10-01-23.gh-issue-116811._h5iKP.rst | 2 ++
 1 file changed, 2 insertions(+)
 create mode 100644 Misc/NEWS.d/next/Library/2024-03-14-10-01-23.gh-issue-116811._h5iKP.rst

diff --git a/Misc/NEWS.d/next/Library/2024-03-14-10-01-23.gh-issue-116811._h5iKP.rst b/Misc/NEWS.d/next/Library/2024-03-14-10-01-23.gh-issue-116811._h5iKP.rst
new file mode 100644
index 00000000000000..00168632429996
--- /dev/null
+++ b/Misc/NEWS.d/next/Library/2024-03-14-10-01-23.gh-issue-116811._h5iKP.rst
@@ -0,0 +1,2 @@
+In ``PathFinder.invalidate_caches``, delegate to
+``MetadataPathFinder.invalidate_caches``.