From ef6094a650367d7452dbc1729fdfe5f367279979 Mon Sep 17 00:00:00 2001
From: Guillermo Rodriguez <guillermo@telos.net>
Date: Sun, 13 Apr 2025 14:16:39 -0300
Subject: [PATCH] Only set shield flag when trio nursery mode is used

---
 tractor/trionics/_mngrs.py | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/tractor/trionics/_mngrs.py b/tractor/trionics/_mngrs.py
index 9a5ed156..24b4fde8 100644
--- a/tractor/trionics/_mngrs.py
+++ b/tractor/trionics/_mngrs.py
@@ -70,7 +70,8 @@ async def maybe_open_nursery(
         yield nursery
     else:
         async with lib.open_nursery(**kwargs) as nursery:
-            nursery.cancel_scope.shield = shield
+            if lib == trio:
+                nursery.cancel_scope.shield = shield
             yield nursery