Pattern can never match the type in DAG Scheduler build function

Questions & Help Questions
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2

Problem solved, by refactoring executor’s API.

Now executor will receive a Scheduler.Context struct and execute work flow.

defmodule Orchid.Executor do
  @moduledoc """
  Executor behavoir.
  """

  @type executor :: module()
  @type executor_opts :: keyword()

  @type response :: {:ok, [Orchid.Param.t()]} | {:error, term()}

  @callback execute(Orchid.Scheduler.Context.t(), executor_opts()) ::
              response()
end

I also change the application’s name from qy_core into orchid, because it’s project-agnostic.

It also released on hex.pm, and I translated some comments and documents into English. This is a lightweight library, and its library has only about ~1k lines of code(exclude comments and test).

Anyway, thank you for your viewing, especially the group member who helped me in the elixir chat group.