From 34f0bf778af4cbdbc0cb498185a6d02461c7423c Mon Sep 17 00:00:00 2001
From: Ben Barham <ben_barham@apple.com>
Date: Wed, 27 Aug 2025 10:59:50 -0700
Subject: [PATCH] Use local dependencies in `build-using-self`

Cross PR testing only works when using update-checkout and local
dependencies. Update `build-using-self` to pass `SWIFTCI_USE_LOCAL_DEPS`
so that we're not re-fetching (possibly incorrect) dependencies.
---
 Utilities/build-using-self | 1 +
 1 file changed, 1 insertion(+)

diff --git a/Utilities/build-using-self b/Utilities/build-using-self
index 0cf187e939f..7e105faa1ae 100755
--- a/Utilities/build-using-self
+++ b/Utilities/build-using-self
@@ -141,6 +141,7 @@ def set_environment(
     swiftpm_bin_dir: pathlib.Path,
 ) -> None:
     os.environ["SWIFTCI_IS_SELF_HOSTED"] = "1"
+    os.environ["SWIFTCI_USE_LOCAL_DEPS"] = "1"
 
     # Ensure SDKROOT is configure
     if is_on_darwin():