From 9449e08f9d4ea7e9213f8c929951614da1c71e6b Mon Sep 17 00:00:00 2001
From: Charles Mita <cmita@google.com>
Date: Wed, 10 Jun 2026 12:01:34 +0200
Subject: [PATCH] Disable bazel-diff for rules_cc presubmit.

bazel-diff appears to often filter out the analysis tests. Since these
are a major part of the testing done for rules_cc, this is bad, and we
should simply turn it off.
---
 buildkite/terraform/bazel/pipelines_rules.tf | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/buildkite/terraform/bazel/pipelines_rules.tf b/buildkite/terraform/bazel/pipelines_rules.tf
index a05d013df7..3f5d57940f 100644
--- a/buildkite/terraform/bazel/pipelines_rules.tf
+++ b/buildkite/terraform/bazel/pipelines_rules.tf
@@ -752,7 +752,9 @@ resource "buildkite_pipeline" "google-rules-cc-presubmit" {
   repository     = "https://bazel.googlesource.com/rules_cc.git"
   default_branch = "main"
   steps = templatefile("pipeline.yml.tpl", {
-    envs = {}
+    envs = {
+      DISABLE_BAZEL_DIFF = "1"
+    }
     steps = {
       commands = [
         "curl -sS \"https://raw.githubusercontent.com/bazelbuild/continuous-integration/master/buildkite/bazelci.py?$(date +%s)\" -o bazelci.py",