   current environment, behaviour can be overridden via options.
   """
   def children() do
-    mix_children([]) ++ Mix.Dep.Umbrella.unloaded
+    mix_children([]) ++ Mix.Dep.Umbrella.unloaded()
   end
 
   @doc """

  end

  defp invalid_dep_format(dep) do
    Mix.raise """
    Dependency specified in the wrong format:

        #{inspect dep}

    Expected:


      end

    unless scm do
      Mix.raise(
        "Could not find an SCM for dependency #{inspect(app)} from #{inspect(Mix.Project.get())}"
      )
    end

    %Mix.Dep{
