message: Simplify code, avoid creating a depset
  Calling depset.to_list() inside a loop can be expensive.
diff: @@ -335,11 +335,10 @@ def get_cxx_inc_directories(repository_ctx, cc):
  includes_cpp = _get_cxx_inc_directories_impl(repository_ctx, cc, True)
  includes_c = _get_cxx_inc_directories_impl(repository_ctx, cc, False)
  - includes_cpp_set = depset(includes_cpp)
  return includes_cpp + [
  inc
  for inc in includes_c
  - if inc not in includes_cpp_set.to_list()
  + if inc not in includes_cpp
  ]
  def auto_configure_fail(msg):
  