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-rw-r--r--lldb/use_lldb_suite_root.py4
1 files changed, 3 insertions, 1 deletions
diff --git a/lldb/use_lldb_suite_root.py b/lldb/use_lldb_suite_root.py
index fd42f63..b8f8acf 100644
--- a/lldb/use_lldb_suite_root.py
+++ b/lldb/use_lldb_suite_root.py
@@ -21,5 +21,7 @@ def add_lldbsuite_packages_dir(lldb_root):
lldb_root = os.path.dirname(inspect.getfile(inspect.currentframe()))
-add_third_party_module_dirs(lldb_root)
+# Use environment variables to avoid plumbing flags, lit configs, etc.
+if os.getenv("LLDB_TEST_USE_VENDOR_PACKAGES"):
+ add_third_party_module_dirs(lldb_root)
add_lldbsuite_packages_dir(lldb_root)