False unused import warning

import_text.exs

defmodule ToImport do
  def hello do
    "Hello"
  end
end

defmodule Test do
  import ToImport

  defmacrop precompile(expr) do
    { res, _ } = Code.eval_quoted(expr, [], __CALLER__)
    quote do
      unquote(res)
    end
  end

  def test do
    precompile hello()
  end
end