Returns:
    string value for clang_compiler_path.
  """
  # Default path if clang-16 is installed by using apt-get install
  default_clang_path = 'C:/Program Files/LLVM/bin/clang.exe'
  if not os.path.exists(default_clang_path):
    default_clang_path = which('clang') or ''

  clang_compiler_path = prompt_loop_or_load_from_env(
      environ_cp,
      var_name='CLANG_COMPILER_PATH',