buck2/prelude: use old type hints in make_comp_db.py

Differential Revision: D63254427

fbshipit-source-id: 35ddf5bd8702aa3908d0b9d36748f2d7d5925651

prelude/cxx/tools/make_comp_db.py

@@ -20,9 +20,10 @@
 import json
 import shlex
 import sys
+from typing import List
 
 
-def process_arguments(arguments: list[str]) -> list[str]:
+def process_arguments(arguments: List[str]) -> List[str]:
  """
  Process arguments to expand argsfiles.
  """
@@ -77,7 +78,7 @@ def merge(args: argparse.Namespace) -> None:
  args.output.close()
 
 
-def main(argv: list[str]) -> int:
+def main(argv: List[str]) -> int:
  parser = argparse.ArgumentParser()
  subparsers = parser.add_subparsers()