From 78faddc7f97db5ee6702cd0fdd3ee5cf4b5321c8 Mon Sep 17 00:00:00 2001
From: Semyon Moroz <donbarbos@proton.me>
Date: Wed, 30 Jul 2025 04:35:29 +0000
Subject: [PATCH] [sys] Deprecate `_enablelegacywindowsfsencoding` (#14495)

---
 stdlib/sys/__init__.pyi | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/stdlib/sys/__init__.pyi b/stdlib/sys/__init__.pyi
index 0ca30396a..a5c2ad360 100644
--- a/stdlib/sys/__init__.pyi
+++ b/stdlib/sys/__init__.pyi
@@ -454,7 +454,14 @@ def get_asyncgen_hooks() -> _asyncgen_hooks: ...
 def set_asyncgen_hooks(firstiter: _AsyncgenHook = ..., finalizer: _AsyncgenHook = ...) -> None: ...
 
 if sys.platform == "win32":
-    def _enablelegacywindowsfsencoding() -> None: ...
+    if sys.version_info >= (3, 13):
+        @deprecated(
+            "Deprecated since Python 3.13; will be removed in Python 3.16. "
+            "Use the `PYTHONLEGACYWINDOWSFSENCODING` environment variable instead."
+        )
+        def _enablelegacywindowsfsencoding() -> None: ...
+    else:
+        def _enablelegacywindowsfsencoding() -> None: ...
 
 def get_coroutine_origin_tracking_depth() -> int: ...
 def set_coroutine_origin_tracking_depth(depth: int) -> None: ...