From a75dfff9e997e3e62cd60c46c45cf9242b1c4ee9 Mon Sep 17 00:00:00 2001
From: Patrick Balestra <me@patrickbalestra.com>
Date: Mon, 9 Jan 2023 08:59:30 +0100
Subject: [PATCH] Generate gitignored bazelrc with version-specific flags

---
 .gitignore      | 1 +
 bazel_6.bazelrc | 3 +++
 shared.bazelrc  | 3 +++
 tools/bazel     | 4 +++-
 4 files changed, 10 insertions(+), 1 deletion(-)

diff --git a/.gitignore b/.gitignore
index c77ef9d392..9a9efe893f 100644
--- a/.gitignore
+++ b/.gitignore
@@ -7,4 +7,5 @@
 # Symlink to `$DEVELOPER_DIR/Toolchains/XcodeDefault.xctoolchain/usr/lib`
 **/*.xcodeproj/rules_xcodeproj/lib
 
+generated.bazelrc
 user.bazelrc
diff --git a/bazel_6.bazelrc b/bazel_6.bazelrc
index 94307cd974..ae3b71b486 100644
--- a/bazel_6.bazelrc
+++ b/bazel_6.bazelrc
@@ -1 +1,4 @@
 build:cache --experimental_remote_build_event_upload=minimal
+
+# Enable bzlmod under Bazel 6.
+common --experimental_enable_bzlmod
diff --git a/shared.bazelrc b/shared.bazelrc
index ca8f0c192e..07f2595b81 100644
--- a/shared.bazelrc
+++ b/shared.bazelrc
@@ -1,3 +1,6 @@
+# Import Bazel version-specific bazelrc.
+import %workspace%/generated.bazelrc
+
 build --incompatible_disallow_empty_glob
 build --experimental_convenience_symlinks=ignore
 build --features=swift.use_global_module_cache
diff --git a/tools/bazel b/tools/bazel
index e08e5b34e1..cf74c8cd25 100755
--- a/tools/bazel
+++ b/tools/bazel
@@ -12,4 +12,6 @@ else
   readonly bazel_version_bazelrc="$root_dir/bazel_6.bazelrc"
 fi
 
-exec "$BAZEL_REAL" "--bazelrc=$bazel_version_bazelrc" "$@"
+echo "import $bazel_version_bazelrc" > "generated.bazelrc"
+
+exec "$BAZEL_REAL" "$@"