From 02be2e5b27ab0fa37ee8caa4e512c48bf27b1521 Mon Sep 17 00:00:00 2001
From: Oscar Benjamin <oscar.j.benjamin@gmail.com>
Date: Sun, 2 Aug 2026 13:14:53 +0100
Subject: [PATCH] Bundle libwinpthread.dll in Windows ARM wheels

---
 bin/cibw_before_all_windows_arm64.sh | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/bin/cibw_before_all_windows_arm64.sh b/bin/cibw_before_all_windows_arm64.sh
index 02b602ed..91144f88 100755
--- a/bin/cibw_before_all_windows_arm64.sh
+++ b/bin/cibw_before_all_windows_arm64.sh
@@ -24,3 +24,7 @@ bin/cibw_before_all_windows.sh \
     --patch-ldd \
     --patch-immintrin \
     #
+
+# Stage the MinGW threading runtime with the locally built DLLs so that
+# delvewheel can find and bundle it from .local/bin.
+cp /clangarm64/bin/libwinpthread-1.dll .local/bin/