Builtin class and stubbed import middleware

lib/vagrant.rb

@@ -14,3 +14,6 @@ require File.expand_path("util/glob_loader", libdir)
 Vagrant::GlobLoader.glob_require(libdir, %w{util/stacked_proc_runner
   actions/base downloaders/base actions/collection actions/runner config
   provisioners/base provisioners/chef systems/base commands/base commands/box})
+
+# Initialize the built-in actions
+Vagrant::Action.builtin!

lib/vagrant/action.rb

@@ -15,7 +15,7 @@ module Vagrant
       #
       # @param [Symbol] key
       def register(key, callable)
-        @actions[key] = callable
+        actions[key] = callable
       end
     end
 

lib/vagrant/action/builtin.rb

@@ -0,0 +1,15 @@
+module Vagrant
+  class Action
+    # Registers the builtin actions. These are locked away in a
+    # method so that their definition can be deferred until after
+    # all the necessary Vagrant libraries are loaded. Hopefully
+    # in the future this will no longer be necessary with autoloading.
+    def self.builtin!
+      up = Builder.new do
+        use VM::Import
+      end
+
+      register :up, up
+    end
+  end
+end

lib/vagrant/action/vm/import.rb

@@ -0,0 +1,16 @@
+module Vagrant
+  class Action
+    module VM
+      class Import
+        def initialize(app, env)
+          @app = app
+        end
+
+        def call(env)
+          @app.call(env)
+          p env['vm']
+        end
+      end
+    end
+  end
+end