From 1d0bf940e47c11e2c5e37a31479f75f62cee2ce9 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Laurenz=20Altenm=C3=BCller?=
 <laurenz.altenmueller@fernride.com>
Date: Wed, 15 Oct 2025 12:51:49 +0200
Subject: [PATCH] Make launch.sh Posix shell compliant

---
 ros2/ament.bzl     |  2 +-
 ros2/launch.sh.tpl | 10 +++++-----
 2 files changed, 6 insertions(+), 6 deletions(-)

diff --git a/ros2/ament.bzl b/ros2/ament.bzl
index 9f69f0db..8f41c874 100644
--- a/ros2/ament.bzl
+++ b/ros2/ament.bzl
@@ -346,7 +346,7 @@ def _sh_launcher_rule_impl(ctx):
         ctx.attr.substitutions,
         {
             "{{ament_prefix_path}}": ament_prefix_path,
-            "{{bash_bin}}": ctx.toolchains[SH_TOOLCHAIN].path,
+            "{{sh_bin}}": ctx.toolchains[SH_TOOLCHAIN].path,
         },
     )
 
diff --git a/ros2/launch.sh.tpl b/ros2/launch.sh.tpl
index 7ca8d963..ab6f5792 100644
--- a/ros2/launch.sh.tpl
+++ b/ros2/launch.sh.tpl
@@ -1,13 +1,13 @@
-#!{{bash_bin}}
+#!{{sh_bin}}
 
-set -o errexit -o nounset -o pipefail
+set -eu
 
-if [[ ! -z "${BAZEL_TEST:-}" ]]; then
+if [ -n "${BAZEL_TEST:-}" ]; then
   bazel_test_output_dir="${TEST_UNDECLARED_OUTPUTS_DIR:-${TEST_TMPDIR}}"
-  if [[ -z "${ROS_HOME:-}" ]]; then
+  if [ -z "${ROS_HOME:-}" ]; then
     export ROS_HOME="${bazel_test_output_dir}"
   fi
-  if [[ -z "${ROS_LOG_DIR:-}" ]]; then
+  if [ -z "${ROS_LOG_DIR:-}" ]; then
     export ROS_LOG_DIR="${bazel_test_output_dir}"
   fi
 fi