From d591a116ea116cd22f4bc88b3b4ad4d5f75dc6e8 Mon Sep 17 00:00:00 2001
From: starr-openai <starr@openai.com>
Date: Thu, 28 May 2026 22:55:05 -0700
Subject: [PATCH] bazel: keep local cache artifacts hermetic

---
 patches/webrtc-sys_hermetic_darwin_sysroot.patch | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/patches/webrtc-sys_hermetic_darwin_sysroot.patch b/patches/webrtc-sys_hermetic_darwin_sysroot.patch
index c90edbd08e..b8cb6f7ca2 100644
--- a/patches/webrtc-sys_hermetic_darwin_sysroot.patch
+++ b/patches/webrtc-sys_hermetic_darwin_sysroot.patch
@@ -6,6 +6,10 @@ index 3b4a24a..6aa06ff 100644
 -use std::path::Path;
 +use std::fs;
 +use std::path::Path;
+@@ -28,0 +30,3 @@
++    // Keep cxx-build inside Bazel's per-action output tree instead of the
++    // scratch crate's compile-time OUT_DIR from whichever machine built it.
++    env::set_var("CARGO_TARGET_DIR", env::var_os("OUT_DIR").unwrap());
 @@ -118,1 +119,9 @@
 -    println!("cargo:rustc-link-search=native={}", webrtc_lib.to_str().unwrap());
 +    let webrtc_link_lib = if env::var_os("WEBRTC_SYS_LINK_OUT_DIR").is_some() {