Merge branch 'plugin-command'

This introduces a new `vagrant plugin` command and removes the old
`vagrant gem` command. Technically, `vagrant plugin` is still just using
RubyGems underneath to manage plugins, but it masks the entire RubyGem
experience away from the end user. This merge introduces three commands;
`list`, `install`, and `uninstall`. They do what they sound like they do.

Future enhancements will add more information such as what components a
plugin installs and activation/deactivation of plugins  that you want
to keep installed but don't want to run.

lib/vagrant/environment.rb

@@ -15,7 +15,6 @@ module Vagrant
   class Environment
     DEFAULT_HOME = "~/.vagrant.d"
     DEFAULT_LOCAL_DATA = ".vagrant"
-    DEFAULT_RC = "~/.vagrantrc"
 
     # The `cwd` that this environment represents
     attr_reader :cwd
@@ -411,6 +410,7 @@ module Vagrant
           :box_collection => boxes,
           :global_config  => config_global,
           :host           => host,
+          :gems_path      => gems_path,
           :root_path      => root_path,
           :tmp_path       => tmp_path,
           :ui             => @ui
@@ -591,18 +591,27 @@ module Vagrant
     # Loads the Vagrant plugins by properly setting up RubyGems so that
     # our private gem repository is on the path.
     def load_plugins
+      if ENV["VAGRANT_NO_PLUGINS"]
+        # If this key exists, then we don't load any plugins. It is a "safe
+        # mode" of sorts.
+        @logger.warn("VAGRANT_NO_PLUGINS is set. Not loading 3rd party plugins.")
+        return
+      end
+
       # Add our private gem path to the gem path and reset the paths
       # that Rubygems knows about.
       ENV["GEM_PATH"] = "#{@gems_path}#{::File::PATH_SEPARATOR}#{ENV["GEM_PATH"]}"
       ::Gem.clear_paths
 
       # Load the plugins
-      rc_path = File.expand_path(ENV["VAGRANT_RC"] || DEFAULT_RC)
-      if File.file?(rc_path) && @@loaded_rc.add?(rc_path)
-        @logger.debug("Loading RC file: #{rc_path}")
-        load rc_path
-      else
-        @logger.debug("RC file not found. Not loading: #{rc_path}")
+      plugins_json_file = @home_path.join("plugins.json")
+      @logger.debug("Loading plugins from: #{plugins_json_file}")
+      if plugins_json_file.file?
+        data = JSON.parse(plugins_json_file.read)
+        data["installed"].each do |plugin|
+          @logger.info("Loading plugin from JSON: #{plugin}")
+          Vagrant.require_plugin(plugin)
+        end
       end
     end
 

lib/vagrant/errors.rb

@@ -336,6 +336,10 @@ module Vagrant
       error_key(:provider_not_found)
     end
 
+    class PluginGemError < VagrantError
+      error_key(:plugin_gem_error)
+    end
+
     class PluginLoadError < VagrantError
       status_code(81)
       error_key(:plugin_load_error)

plugins/commands/gem/command.rb

@@ -15,7 +15,7 @@ module VagrantPlugins
         if defined?(Bundler)
           require 'bundler/shared_helpers'
           if Bundler::SharedHelpers.in_bundle?
-            raise Errors::GemCommandInBundler
+            raise Vagrant::Errors::GemCommandInBundler
           end
         end
 

plugins/commands/plugin/action.rb

@@ -0,0 +1,43 @@
+require "pathname"
+
+require "vagrant/action/builder"
+
+module VagrantPlugins
+  module CommandPlugin
+    module Action
+      # This middleware sequence will install a plugin.
+      def self.action_install
+        Vagrant::Action::Builder.new.tap do |b|
+          b.use BundlerCheck
+          b.use InstallGem
+          b.use PruneGems
+        end
+      end
+
+      # This middleware sequence will list all installed plugins.
+      def self.action_list
+        Vagrant::Action::Builder.new.tap do |b|
+          b.use BundlerCheck
+          b.use ListPlugins
+        end
+      end
+
+      # This middleware sequence will uninstall a plugin.
+      def self.action_uninstall
+        Vagrant::Action::Builder.new.tap do |b|
+          b.use BundlerCheck
+          b.use UninstallPlugin
+          b.use PruneGems
+        end
+      end
+
+      # The autoload farm
+      action_root = Pathname.new(File.expand_path("../action", __FILE__))
+      autoload :BundlerCheck, action_root.join("bundler_check")
+      autoload :InstallGem, action_root.join("install_gem")
+      autoload :ListPlugins, action_root.join("list_plugins")
+      autoload :PruneGems, action_root.join("prune_gems")
+      autoload :UninstallPlugin, action_root.join("uninstall_plugin")
+    end
+  end
+end

plugins/commands/plugin/action/bundler_check.rb

@@ -0,0 +1,25 @@
+module VagrantPlugins
+  module CommandPlugin
+    module Action
+      class BundlerCheck
+        def initialize(app, env)
+          @app = app
+        end
+
+        def call(env)
+          # Bundler sets up its own custom gem load paths such that our
+          # own gems are never loaded. Therefore, give an error if a user
+          # tries to install gems while within a Bundler-managed environment.
+          if defined?(Bundler)
+            require 'bundler/shared_helpers'
+            if Bundler::SharedHelpers.in_bundle?
+              raise Vagrant::Errors::GemCommandInBundler
+            end
+          end
+
+          @app.call(env)
+        end
+      end
+    end
+  end
+end

plugins/commands/plugin/action/install_gem.rb

@@ -0,0 +1,34 @@
+require "rubygems"
+require "rubygems/gem_runner"
+
+require "log4r"
+
+module VagrantPlugins
+  module CommandPlugin
+    module Action
+      # This action takes the `:plugin_name` variable in the environment
+      # and installs it using the RubyGems API.
+      class InstallGem
+        def initialize(app, env)
+          @app    = app
+          @logger = Log4r::Logger.new("vagrant::plugins::plugincommand::installgem")
+        end
+
+        def call(env)
+          plugin_name = env[:plugin_name]
+
+          # Install the gem
+          env[:ui].info(I18n.t("vagrant.commands.plugin.installing",
+                               :name => plugin_name))
+          env[:gem_helper].cli(["install", plugin_name, "--no-ri", "--no-rdoc"])
+
+          # Mark that we installed the gem
+          env[:plugin_state_file].add_plugin(plugin_name)
+
+          # Continue
+          @app.call(env)
+        end
+      end
+    end
+  end
+end

plugins/commands/plugin/action/list_plugins.rb

@@ -0,0 +1,56 @@
+require "rubygems"
+require "set"
+
+module VagrantPlugins
+  module CommandPlugin
+    module Action
+      # This middleware lists all the installed plugins.
+      #
+      # This is a bit more complicated than simply listing installed
+      # gems or what is in the state file as installed. Instead, this
+      # actually compares installed gems with what the state file claims
+      # is installed, and outputs the appropriate truly installed
+      # plugins.
+      class ListPlugins
+        def initialize(app, env)
+          @app = app
+        end
+
+        def call(env)
+          # Get the list of installed plugins according to the state file
+          installed = Set.new(env[:plugin_state_file].installed_plugins)
+
+          # Get the actual specifications of installed gems
+          specs = env[:gem_helper].with_environment do
+            Gem::Specification.find_all
+          end
+
+          # Get the latest version of the installed plugins
+          installed_map = {}
+          specs.each do |spec|
+            # Ignore specs that aren't in our installed list
+            next if !installed.include?(spec.name)
+
+            # If we already have a newer version in our list of installed,
+            # then ignore it
+            next if installed_map.has_key?(spec.name) &&
+              installed_map[spec.name].version >= spec.version
+
+            installed_map[spec.name] = spec
+          end
+
+          # Output!
+          if installed_map.empty?
+            env[:ui].info(I18n.t("vagrant.commands.plugin.no_plugins"))
+          else
+            installed_map.values.each do |spec|
+              env[:ui].info "#{spec.name} (#{spec.version})"
+            end
+          end
+
+          @app.call(env)
+        end
+      end
+    end
+  end
+end

plugins/commands/plugin/action/prune_gems.rb

@@ -0,0 +1,156 @@
+require "rubygems"
+require "rubygems/user_interaction"
+require "rubygems/uninstaller"
+require "set"
+
+require "log4r"
+
+module VagrantPlugins
+  module CommandPlugin
+    module Action
+      # This class prunes any unnecessary gems from the Vagrant-managed
+      # gem folder. This keeps the gem folder to the absolute minimum set
+      # of required gems and doesn't let it blow up out of control.
+      #
+      # A high-level description of how this works:
+      #
+      #   1. Get the list of installed plugins. Vagrant maintains this
+      #     list on its own.
+      #   2. Get the list of installed RubyGems.
+      #   3. Find the latest version of each RubyGem that matches an installed
+      #      plugin. These are our root RubyGems that must be installed.
+      #   4. Go through each root and mark all dependencies recursively as
+      #      necessary.
+      #   5. Set subtraction between all gems and necessary gems yields a
+      #      list of gems that aren't needed. Uninstall them.
+      #
+      class PruneGems
+        def initialize(app, env)
+          @app    = app
+          @logger = Log4r::Logger.new("vagrant::plugins::plugincommand::prune")
+        end
+
+        def call(env)
+          @logger.info("Pruning gems...")
+
+          # Get the list of installed plugins according to the state file
+          installed = Set.new(env[:plugin_state_file].installed_plugins)
+
+          # Get the actual specifications of installed gems
+          all_specs = env[:gem_helper].with_environment do
+            result = []
+            Gem::Specification.find_all { |s| result << s }
+            result
+          end
+
+          # The list of specs to prune initially starts out as all of them
+          all_specs = Set.new(all_specs)
+
+          # Go through each spec and find the latest version of the installed
+          # gems, since we want to keep those.
+          installed_specs = {}
+
+          @logger.debug("Collecting installed plugin gems...")
+          all_specs.each do |spec|
+            # If this isn't a spec that we claim is installed, skip it
+            next if !installed.include?(spec.name)
+
+            # If it is already in the specs, then we need to make sure we
+            # have the latest version.
+            if installed_specs.has_key?(spec.name)
+              if installed_specs[spec.name].version > spec.version
+                next
+              end
+            end
+
+            @logger.debug(" -- #{spec.name} (#{spec.version})")
+            installed_specs[spec.name] = spec
+          end
+
+          # Recursive dependency checker to keep all dependencies and remove
+          # all non-crucial gems from the prune list.
+          good_specs = Set.new
+          to_check   = installed_specs.values
+
+          while true
+            # If we're out of gems to check then we break out
+            break if to_check.empty?
+
+            # Get a random (first) element to check
+            spec = to_check.shift
+
+            # If we already checked this, then do the next one
+            next if good_specs.include?(spec)
+
+            # Find all the dependencies and add the latest compliant gem
+            # to the `to_check` list.
+            if spec.dependencies.length > 0
+              @logger.debug("Finding dependencies for '#{spec.name}' to mark as good...")
+              spec.dependencies.each do |dep|
+                # Ignore non-runtime dependencies
+                next if dep.type != :runtime
+                @logger.debug("Searching for: '#{dep.name}'")
+
+                latest_matching = nil
+
+                all_specs.each do |prune_spec|
+                  if dep =~ prune_spec
+                    # If we have a matching one already and this one isn't newer
+                    # then we ditch it.
+                    next if latest_matching &&
+                      prune_spec.version <= latest_matching.version
+
+                    latest_matching = prune_spec
+                  end
+                end
+
+                if latest_matching.nil?
+                  @logger.error("Missing dependency for '#{spec.name}': #{dep.name}")
+                  next
+                end
+
+                @logger.debug("Latest matching dep: '#{latest_matching.name}' (#{latest_matching.version})")
+                to_check << latest_matching
+              end
+            end
+
+            # Add ito the list of checked things so we don't accidentally
+            # re-check it
+            good_specs.add(spec)
+          end
+
+          # Figure out the gems we need to prune
+          prune_specs = all_specs - good_specs
+          @logger.debug("Gems to prune: #{prune_specs.inspect}")
+          @logger.info("Pruning #{prune_specs.length} gems.")
+
+          if prune_specs.length > 0
+            env[:gem_helper].with_environment do
+              prune_specs.each do |prune_spec|
+                uninstaller = Gem::Uninstaller.new(prune_spec.name, {
+                  :executables => true,
+                  :force       => true,
+                  :version     => prune_spec.version.version
+                })
+
+                # This is sad, but there is no way to force this to be true
+                # so I just monkey-patch here. Vagrant has a pretty strict
+                # version check on the RubyGems version so this should be okay.
+                # In the future, let's try to get a pull request into RubyGems
+                # to fix this.
+                def uninstaller.ask_if_ok(spec)
+                  true
+                end
+
+                @logger.info("Uninstalling: #{prune_spec.name} (#{prune_spec.version})")
+                uninstaller.uninstall
+              end
+            end
+          end
+
+          @app.call(env)
+        end
+      end
+    end
+  end
+end

plugins/commands/plugin/action/uninstall_plugin.rb

@@ -0,0 +1,23 @@
+module VagrantPlugins
+  module CommandPlugin
+    module Action
+      # This middleware uninstalls a plugin by simply removing it from
+      # the state file. Running a {PruneGems} after should properly remove
+      # it from the gem index.
+      class UninstallPlugin
+        def initialize(app, env)
+          @app = app
+        end
+
+        def call(env)
+          # Remove it!
+          env[:ui].info(I18n.t("vagrant.commands.plugin.uninstalling",
+                               :name => env[:plugin_name]))
+          env[:plugin_state_file].remove_plugin(env[:plugin_name])
+
+          @app.call(env)
+        end
+      end
+    end
+  end
+end

plugins/commands/plugin/command/base.rb

@@ -0,0 +1,22 @@
+module VagrantPlugins
+  module CommandPlugin
+    module Command
+      class Base < Vagrant.plugin("2", :command)
+        # This is a helper for executing an action sequence with the proper
+        # environment hash setup so that the plugin specific helpers are
+        # in.
+        #
+        # @param [Object] callable the Middleware callable
+        # @param [Hash] env Extra environment hash that is merged in.
+        def action(callable, env=nil)
+          env = {
+            :gem_helper => GemHelper.new(@env.gems_path),
+            :plugin_state_file => StateFile.new(@env.home_path.join("plugins.json"))
+          }.merge(env || {})
+
+          @env.action_runner.run(callable, env)
+        end
+      end
+    end
+  end
+end

plugins/commands/plugin/command/install.rb

@@ -0,0 +1,28 @@
+require 'optparse'
+
+require_relative "base"
+
+module VagrantPlugins
+  module CommandPlugin
+    module Command
+      class Install < Base
+        def execute
+          opts = OptionParser.new do |o|
+            o.banner = "Usage: vagrant plugin install <name> [-h]"
+          end
+
+          # Parse the options
+          argv = parse_options(opts)
+          return if !argv
+          raise Vagrant::Errors::CLIInvalidUsage, :help => opts.help.chomp if argv.length < 1
+
+          # Install the gem
+          action(Action.action_install, :plugin_name => argv[0])
+
+          # Success, exit status 0
+          0
+        end
+      end
+    end
+  end
+end

plugins/commands/plugin/command/list.rb

@@ -0,0 +1,28 @@
+require 'optparse'
+
+require_relative "base"
+
+module VagrantPlugins
+  module CommandPlugin
+    module Command
+      class List < Base
+        def execute
+          opts = OptionParser.new do |o|
+            o.banner = "Usage: vagrant plugin list [-h]"
+          end
+
+          # Parse the options
+          argv = parse_options(opts)
+          return if !argv
+          raise Vagrant::Errors::CLIInvalidUsage, :help => opts.help.chomp if argv.length > 0
+
+          # List the installed plugins
+          action(Action.action_list)
+
+          # Success, exit status 0
+          0
+        end
+      end
+    end
+  end
+end

plugins/commands/plugin/command/root.rb

@@ -0,0 +1,70 @@
+require 'optparse'
+
+module VagrantPlugins
+  module CommandPlugin
+    module Command
+      class Root < Vagrant.plugin("2", :command)
+        def initialize(argv, env)
+          super
+
+          @main_args, @sub_command, @sub_args = split_main_and_subcommand(argv)
+
+          @subcommands = Vagrant::Registry.new
+          @subcommands.register(:install) do
+            require_relative "install"
+            Install
+          end
+
+          @subcommands.register(:list) do
+            require_relative "list"
+            List
+          end
+
+          @subcommands.register(:uninstall) do
+            require_relative "uninstall"
+            Uninstall
+          end
+        end
+
+        def execute
+          if @main_args.include?("-h") || @main_args.include?("--help")
+            # Print the help for all the sub-commands.
+            return help
+          end
+
+          # If we reached this far then we must have a subcommand. If not,
+          # then we also just print the help and exit.
+          command_class = @subcommands.get(@sub_command.to_sym) if @sub_command
+          return help if !command_class || !@sub_command
+          @logger.debug("Invoking command class: #{command_class} #{@sub_args.inspect}")
+
+          # Initialize and execute the command class
+          command_class.new(@sub_args, @env).execute
+        end
+
+        # Prints the help out for this command
+        def help
+          opts = OptionParser.new do |o|
+            o.banner = "Usage: vagrant plugin <command> [<args>]"
+            o.separator ""
+            o.separator "Available subcommands:"
+
+            # Add the available subcommands as separators in order to print them
+            # out as well.
+            keys = []
+            @subcommands.each { |key, value| keys << key.to_s }
+
+            keys.sort.each do |key|
+              o.separator "     #{key}"
+            end
+
+            o.separator ""
+            o.separator "For help on any individual command run `vagrant plugin COMMAND -h`"
+          end
+
+          @env.ui.info(opts.help, :prefix => false)
+        end
+      end
+    end
+  end
+end

plugins/commands/plugin/command/uninstall.rb

@@ -0,0 +1,28 @@
+require 'optparse'
+
+require_relative "base"
+
+module VagrantPlugins
+  module CommandPlugin
+    module Command
+      class Uninstall < Base
+        def execute
+          opts = OptionParser.new do |o|
+            o.banner = "Usage: vagrant plugin uninstall <name> [-h]"
+          end
+
+          # Parse the options
+          argv = parse_options(opts)
+          return if !argv
+          raise Vagrant::Errors::CLIInvalidUsage, :help => opts.help.chomp if argv.length < 1
+
+          # Uninstall the gem
+          action(Action.action_uninstall, :plugin_name => argv[0])
+
+          # Success, exit status 0
+          0
+        end
+      end
+    end
+  end
+end

plugins/commands/plugin/gem_helper.rb

@@ -0,0 +1,74 @@
+require "rubygems"
+require "rubygems/gem_runner"
+
+require "log4r"
+
+module VagrantPlugins
+  module CommandPlugin
+    # This class provides methods to help with calling out to the
+    # `gem` command but using the RubyGems API.
+    class GemHelper
+      def initialize(gem_home)
+        @gem_home = gem_home.to_s
+        @logger   = Log4r::Logger.new("vagrant::plugins::plugincommand::gemhelper")
+      end
+
+      # This executes the `gem` command with the given arguments. Under
+      # the covers this is actually using the RubyGems API directly,
+      # instead of shelling out, which allows for more fine-grained control.
+      #
+      # @param [Array<String>] argv The arguments to send to the `gem` command.
+      def cli(argv)
+        # Initialize the UI to use for RubyGems. This allows us to capture
+        # the stdout/stderr without actually going to the real STDOUT/STDERR.
+        # The final "false" here tells RubyGems we're not a TTY, so don't
+        # ask us things.
+        gem_ui = Gem::StreamUI.new(StringIO.new, StringIO.new, StringIO.new, false)
+
+        # Set the GEM_HOME so that it is installed into our local gems path
+        with_environment do
+          @logger.info("Calling gem with argv: #{argv.inspect}")
+          Gem::DefaultUserInteraction.use_ui(gem_ui) do
+            Gem::GemRunner.new.run(argv)
+          end
+        end
+      rescue Gem::SystemExitException => e
+        # This means that something forced an exit within RubyGems.
+        # We capture this to check whether it succeeded or not by
+        # checking the "exit_code"
+        raise Vagrant::Errors::PluginGemError,
+          :output => gem_ui.errs.string.chomp if e.exit_code != 0
+      ensure
+        # Log the output properly
+        @logger.debug("Gem STDOUT: #{gem_ui.outs.string}")
+        @logger.debug("Gem STDERR: #{gem_ui.errs.string}")
+      end
+
+      # This will yield the given block with the proper ENV setup so
+      # that RubyGems only sees the gems in the Vagrant-managed gem
+      # path.
+      def with_environment
+        old_gem_home = ENV["GEM_HOME"]
+        old_gem_path = ENV["GEM_PATH"]
+        ENV["GEM_HOME"] = @gem_home
+        ENV["GEM_PATH"] = @gem_home
+        @logger.debug("Set GEM_* to: #{ENV["GEM_HOME"]}")
+
+        # Clear paths so that it reads the new GEM_HOME setting
+        Gem.paths = ENV
+
+        # Use a silent UI so that we have no output
+        Gem::DefaultUserInteraction.use_ui(Gem::SilentUI.new) do
+          return yield
+        end
+      ensure
+        # Restore the old GEM_* settings
+        ENV["GEM_HOME"] = old_gem_home
+        ENV["GEM_PATH"] = old_gem_path
+
+        # Reset everything
+        Gem.paths = ENV
+      end
+    end
+  end
+end

plugins/commands/plugin/plugin.rb

@@ -0,0 +1,22 @@
+require "vagrant"
+
+module VagrantPlugins
+  module CommandPlugin
+    class Plugin < Vagrant.plugin("2")
+      name "plugin command"
+      description <<-DESC
+      This command helps manage and install plugins within the
+      Vagrant environment.
+DESC
+
+      command("plugin") do
+        require File.expand_path("../command/root", __FILE__)
+        Command::Root
+      end
+    end
+
+    autoload :Action, File.expand_path("../action", __FILE__)
+    autoload :GemHelper, File.expand_path("../gem_helper", __FILE__)
+    autoload :StateFile, File.expand_path("../state_file", __FILE__)
+  end
+end

plugins/commands/plugin/state_file.rb

@@ -0,0 +1,57 @@
+require "json"
+
+module VagrantPlugins
+  module CommandPlugin
+    # This is a helper to deal with the plugin state file that Vagrant
+    # uses to track what plugins are installed and activated and such.
+    class StateFile
+      def initialize(path)
+        @path = path
+
+        @data = {}
+        @data = JSON.parse(@path.read) if @path.exist?
+        @data["installed"] ||= []
+      end
+
+      # Add a plugin that is installed to the state file.
+      #
+      # @param [String] name The name of the plugin
+      def add_plugin(name)
+        if !@data["installed"].include?(name)
+          @data["installed"] << name
+        end
+
+        save!
+      end
+
+      # This returns a list of installed plugins according to the state
+      # file. Note that this may _not_ directly match over to actually
+      # installed gems.
+      #
+      # @return [Array<String>]
+      def installed_plugins
+        @data["installed"]
+      end
+
+      # Remove a plugin that is installed from the state file.
+      #
+      # @param [String] name The name of the plugin.
+      def remove_plugin(name)
+        @data["installed"].delete(name)
+        save!
+      end
+
+      # This saves the state back into the state file.
+      def save!
+        # Scrub some fields
+        @data["installed"].sort!
+        @data["installed"].uniq!
+
+        # Save
+        @path.open("w+") do |f|
+          f.write(JSON.dump(@data))
+        end
+      end
+    end
+  end
+end

templates/locales/en.yml

@@ -114,11 +114,11 @@ en:
         occurring. Please wait for the other instance of Vagrant to end and then
         try again.
       gem_command_in_bundler: |-
-        You cannot run the `vagrant gem` command while in a bundler environment.
-        Bundler messes around quite a bit with the RubyGem load paths and gems
-        installed via `vagrant gem` are excluded by Bundler.
-
-        Instead, please include your Vagrant plugins in your Gemfile itself.
+        You cannot run the `vagrant plugin` command while in a bundler environment.
+        This should generally never happen unless Vagrant is installed outside
+        of the official installers or another gem is wrongly attempting to
+        use Vagrant internals directly. Please properly install Vagrant to
+        fix this. If this error persists, please contact support.
       guest:
         invalid_class: |-
           The specified guest class does not inherit from a proper guest
@@ -165,6 +165,11 @@ en:
       no_env: |-
         A Vagrant environment is required to run this command. Run `vagrant init`
         to set one up.
+      plugin_gem_error: |-
+        An error occurred within RubyGems, the underlying system used to
+        manage Vagrant plugins. The output of the errors are shown below:
+
+        %{output}
       plugin_load_error: |-
         The plugin "%{plugin}" could not be found. Please make sure that it is
         properly installed via `vagrant gem`.
@@ -411,6 +416,13 @@ en:
           ready to `vagrant up` your first virtual environment! Please read
           the comments in the Vagrantfile as well as documentation on
           `vagrantup.com` for more information on using Vagrant.
+      plugin:
+        no_plugins: |-
+          No plugins installed.
+        installing: |-
+          Installing the '%{name}' plugin. This can take a few minutes...
+        uninstalling: |-
+          Uninstalling the '%{name}' plugin...
       status:
         aborted: |-
           The VM is in an aborted state. This means that it was abruptly