Keep invoking loadconfig on cli boot

Author: josevalim

lib/mix/lib/mix/cli.ex

@@ -78,7 +78,9 @@ defmodule Mix.CLI do
   defp run_task(name, args) do
     try do
       ensure_no_slashes(name)
-      Mix.Tasks.Loadconfig.load_default()
+      # We must go through the task instead of invoking the module directly
+      # because projects like Nerves use this to invoke it early.
+      Mix.Task.run("loadconfig")
       Mix.Task.run(name, args)
     rescue
       # We only rescue exceptions in the Mix namespace, all

lib/mix/lib/mix/tasks/loadconfig.ex

@@ -33,8 +33,7 @@ defmodule Mix.Tasks.Loadconfig do
     end
   end
 
-  @doc false
-  def load_default do
+  defp load_default do
     config = Mix.Project.config()
 
     if File.regular?(config[:config_path]) or config[:config_path] != "config/config.exs" do