Get rid of Mix.Sup

Author: José Valim

Makefile

@@ -32,7 +32,7 @@ $(1): lib/$(1)/ebin/Elixir.$(2).beam lib/$(1)/ebin/$(1).app
 lib/$(1)/ebin/$(1).app: lib/$(1)/mix.exs
 	$(Q) mkdir -p lib/$(1)/_build/shared/lib/$(1)
 	$(Q) cp -R lib/$(1)/ebin lib/$(1)/_build/shared/lib/$(1)/
-	$(Q) cd lib/$(1) && ../../bin/elixir -e "Mix.Sup.start_link()" -r mix.exs -e "Mix.Task.run('compile.app')"
+	$(Q) cd lib/$(1) && ../../bin/elixir -e "Mix.start(:permanent, [])" -r mix.exs -e "Mix.Task.run('compile.app')"
 	$(Q) cp lib/$(1)/_build/shared/lib/$(1)/ebin/$(1).app lib/$(1)/ebin/$(1).app
 	$(Q) rm -rf lib/$(1)/_build
 

lib/mix/lib/mix.ex

@@ -20,12 +20,22 @@ defmodule Mix do
   end
 
   @doc false
-  def start(_, []) do
-    res = Mix.Sup.start_link
+  def start(_type, []) do
+    import Supervisor.Spec
+
+    children = [
+      worker(Mix.TasksServer, []),
+      worker(Mix.ProjectStack, [])
+    ]
+
+    opts = [strategy: :one_for_one, name: Mix.Supervisor]
+    stat = Supervisor.start_link(children, opts)
+
     if env = System.get_env("MIX_ENV") do
       env(String.to_atom env)
     end
-    res
+
+    stat
   end
 
   @doc """