Work some things around so that Bundler is not setup with no plugins

bin/vagrant

@@ -20,9 +20,27 @@ if argv.include?("-v") || argv.include?("--version")
   exit 0
 end
 
+# This is kind of hacky, and I'd love to find a better way to do this, but
+# if we're accessing the plugin interface, we want to NOT load plugins
+# for this run, because they can actually interfere with the function
+# of the plugin interface.
+argv.each do |arg|
+  if !arg.start_with?("-")
+    if arg == "plugin"
+      ENV["VAGRANT_NO_PLUGINS"] = "1"
+      ENV["VAGRANT_VAGRANTFILE"] = "plugin_command_#{Time.now.to_i}"
+    end
+
+    break
+  end
+end
+
+# Require some stuff that is NOT dependent on RubyGems
+require "vagrant/shared_helpers"
+
 # First, make sure that we're executing using the proper Bundler context
 # with our plugins. If we're not, then load that and reload Vagrant.
-if !ENV["VAGRANT_INTERNAL_BUNDLERIZED"]
+if !ENV["VAGRANT_INTERNAL_BUNDLERIZED"] && Vagrant.plugins_enabled?
   require "rbconfig"
   ruby_path = File.join(RbConfig::CONFIG["bindir"], RbConfig::CONFIG["ruby_install_name"])
   Kernel.exec(
@@ -39,25 +57,12 @@ if argv.include?("--debug")
   ENV["VAGRANT_LOG"] = "debug"
 end
 
-# This is kind of hacky, and I'd love to find a better way to do this, but
-# if we're accessing the plugin interface, we want to NOT load plugins
-# for this run, because they can actually interfere with the function
-# of the plugin interface.
-argv.each do |arg|
-  if !arg.start_with?("-")
-    if arg == "plugin"
-      ENV["VAGRANT_NO_PLUGINS"] = "1"
-      ENV["VAGRANT_VAGRANTFILE"] = "plugin_command_#{Time.now.to_i}"
-    end
-
-    break
-  end
+# Setup our dependencies by initializing Bundler if we're using plugins
+if Vagrant.plugins_enabled?
+  require "bundler"
+  Bundler.setup
 end
 
-# Setup our dependencies by initializing Bundler
-require "bundler"
-Bundler.setup
-
 require 'log4r'
 require 'vagrant'
 require 'vagrant/cli'

lib/vagrant.rb

@@ -3,7 +3,9 @@
 
 ENV["VAGRANT_INSTALLER_EMBEDDED_DIR"] = "/Applications/Vagrant/embedded"
 
-if !defined?(Bundler)
+require "vagrant/shared_helpers"
+
+if Vagrant.plugins_enabled? && !defined?(Bundler)
   puts "It appears that Vagrant was not properly loaded. Specifically,"
   puts "the bundler context Vagrant requires was not setup. Please execute"
   puts "vagrant using only the `vagrant` executable."
@@ -80,7 +82,6 @@ end
 # just require them explicitly here.
 require "vagrant/plugin"
 require "vagrant/registry"
-require "vagrant/shared_helpers"
 
 module Vagrant
   autoload :Action,        'vagrant/action'

lib/vagrant/bundler.rb

@@ -1,6 +1,8 @@
 require "pathname"
 require "tempfile"
 
+require "bundler"
+
 require_relative "shared_helpers"
 require_relative "version"
 
@@ -21,8 +23,6 @@ module Vagrant
     # Initializes Bundler and the various gem paths so that we can begin
     # loading gems. This must only be called once.
     def init!(plugins)
-      raise "Bundler already initialized" if defined?(::Bundler)
-
       # Setup the Bundler configuration
       @configfile = File.open(Tempfile.new("vagrant").path + "1", "w+")
       @configfile.close
@@ -39,9 +39,6 @@ module Vagrant
         "#{Vagrant.user_data_path.join("gems")}#{::File::PATH_SEPARATOR}#{@gem_path}"
       Gem.clear_paths
 
-      # Load Bundler now
-      require "bundler"
-
       # Do some additional Bundler initialization
       ::Bundler.ui = ::Bundler::UI.new
       if !::Bundler.ui.respond_to?(:silence)

lib/vagrant/pre-rubygems.rb

@@ -2,10 +2,6 @@
 # initializes the Bundler context so that Vagrant and its associated plugins
 # can load properly, and then execs out into Vagrant again.
 
-require_relative "bundler"
-require_relative "plugin/manager"
-require_relative "shared_helpers"
-
 if defined?(Bundler)
   require "bundler/shared_helpers"
   if Bundler::SharedHelpers.in_bundle?
@@ -16,6 +12,10 @@ if defined?(Bundler)
   end
 end
 
+require_relative "bundler"
+require_relative "plugin/manager"
+require_relative "shared_helpers"
+
 plugins = []
 plugins = Vagrant::Plugin::Manager.instance.installed_plugins if Vagrant.plugins_enabled?
 Vagrant::Bundler.instance.init!(plugins)