From b21fae99c556b05dd31f3ebb67dfeb6918762ff1 Mon Sep 17 00:00:00 2001
From: Mitchell Hashimoto <mitchell.hashimoto@gmail.com>
Date: Wed, 25 Aug 2010 22:30:57 -0700
Subject: [PATCH] Child UIs successfully set environment to themselves

---
 lib/vagrant/environment.rb | 9 +++++++--
 lib/vagrant/ui.rb          | 2 +-
 2 files changed, 8 insertions(+), 3 deletions(-)

diff --git a/lib/vagrant/environment.rb b/lib/vagrant/environment.rb
index a4541bc51..425467ace 100644
--- a/lib/vagrant/environment.rb
+++ b/lib/vagrant/environment.rb
@@ -138,8 +138,13 @@ module Vagrant
     # Returns the {UI} for the environment, which is responsible
     # for talking with the outside world.
     def ui
-      return parent.ui if parent
-      @ui ||= UI.new(self)
+      @ui ||= if parent
+        result = parent.ui.clone
+        result.env = self
+        result
+      else
+        UI.new(self)
+      end
     end
 
     #---------------------------------------------------------------
diff --git a/lib/vagrant/ui.rb b/lib/vagrant/ui.rb
index bf8e56358..03e195af1 100644
--- a/lib/vagrant/ui.rb
+++ b/lib/vagrant/ui.rb
@@ -5,7 +5,7 @@ module Vagrant
   # through a shell). They must respond to the typically logger methods
   # of `warn`, `error`, `info`, and `confirm`.
   class UI
-    attr_reader :env
+    attr_accessor :env
 
     def initialize(env)
       @env = env