-if [[ -z ${BT_TESTS_BABELTRACE_PLUGIN_PATH:-} ]]; then
- BT_TESTS_BABELTRACE_PLUGIN_PATH=$_bt_tests_plugins_path/ctf:$_bt_tests_plugins_path/utils:$_bt_tests_plugins_path/text:$_bt_tests_plugins_path/lttng-utils
-fi
-export BT_TESTS_BABELTRACE_PLUGIN_PATH
+_bt_tests_set_var_def BT_TESTS_BABELTRACE_PLUGIN_PATH \
+ "$_bt_tests_plugins_path/ctf:$_bt_tests_plugins_path/utils:$_bt_tests_plugins_path/text:$_bt_tests_plugins_path/lttng-utils"