From 76fe71a4c990bd98938e94cc08356a4c917371f5 Mon Sep 17 00:00:00 2001
From: Helmut Grohne <helmut@subdivi.de>
Date: Tue, 12 Mar 2024 09:27:05 +0100
Subject: work around mypy misdetection on bookworm

---
 linuxnamespaces/syscalls.py | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/linuxnamespaces/syscalls.py b/linuxnamespaces/syscalls.py
index 8f5e25b..de1b87e 100644
--- a/linuxnamespaces/syscalls.py
+++ b/linuxnamespaces/syscalls.py
@@ -224,6 +224,9 @@ class MountFlags(enum.IntFlag):
         parts: list[str] = []
         remain = self
         for val, text in MountFlags.__flagvals:
+            # Older mypy think MountFlags.__flagvals and thus text was of type
+            # MountFlags.
+            assert isinstance(text, str)
             if remain & val == val:
                 parts.insert(0, text)
                 remain &= ~val
-- 
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