From b2ce5ad3534511a2e2a017e49d012cfe4ba1cb4b Mon Sep 17 00:00:00 2001
From: Sasha Weiss <sasha@signal.org>
Date: Mon, 18 Aug 2025 15:03:26 -0700
Subject: [PATCH] Add ci_pre_xcodebuild.sh to download Metal toolchain manually

---
 ci_scripts/ci_pre_xcodebuild.sh | 8 ++++++++
 1 file changed, 8 insertions(+)
 create mode 100755 ci_scripts/ci_pre_xcodebuild.sh

diff --git a/ci_scripts/ci_pre_xcodebuild.sh b/ci_scripts/ci_pre_xcodebuild.sh
new file mode 100755
index 0000000000..054a396394
--- /dev/null
+++ b/ci_scripts/ci_pre_xcodebuild.sh
@@ -0,0 +1,8 @@
+#!/bin/sh
+
+set -eux
+
+if [ "${CI_WORKFLOW-}" = "Nightly (Xcode 26)" ]; then
+    : "Downloading Metal Toolchain for Xcode 26"
+    xcodebuild -downloadComponent MetalToolchain
+fi