From ff54775bf325391c53c7e3a4ba1ecfebde4e2a48 Mon Sep 17 00:00:00 2001
From: Lukasz Anforowicz <lukasza@google.com>
Date: Mon, 31 Aug 2026 12:10:13 -0700
Subject: [PATCH] Make `use_upb_kernel` config_setting public for
 `rust_proto_library`.

When downstream repositories invoke `rust_proto_library`, the macro
expands to an `alias` with `select({Label("//rust:use_upb_kernel"): ...})`.
Because `select()` keys are evaluated against caller visibility,
downstream users encounter visibility errors unless `use_upb_kernel` is
public.

Closes https://github.com/protocolbuffers/protobuf/issues/29090

PiperOrigin-RevId: 974009395
---
 rust/BUILD | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/rust/BUILD b/rust/BUILD
index d8ad4dfee7efb..724575f922cde 100644
--- a/rust/BUILD
+++ b/rust/BUILD
@@ -381,7 +381,7 @@ config_setting(
     flag_values = {
         ":rust_proto_library_kernel": "upb",
     },
-    visibility = ["//:__subpackages__"],
+    visibility = ["//visibility:public"],
 )
 
 pkg_files(