Vagrant provisioner of Fabric. 元ネタ: https://groups.google.com/d/msg/vagrant-up/DXz7gAumeI8/lqrcT1L98G8J

fabfile apt.py

# -*- coding: utf-8 -*-

from fabric.api import task, sudo

@task(default=True)
def install(package_name):
    sudo('DEBIAN_FRONTEND=noninteractive apt-get -q -y install {0}'.format(package_name), pty=False)

fabric_provsioner.rb

module Vagrant
  module Provisioners
    class Fabric < Base
      class Config < Vagrant::Config::Base
        attr_accessor :fabfile_path
        attr_accessor :fabric_path
        attr_accessor :python_path
        attr_writer :tasks

        def _default_fabfile_path
          File.exist?("fabfile.py") ? "fabfile.py" : "fabfile/__init__.py"
        end

        def _default_fabric_path
          "fab"
        end

        def _default_python_path
          "/usr/bin/python"
        end

        def execute(command)
          output = ''
          IO.popen(command, "w+") do |f|
            f.close_write
            output = f.read
          end
          output
        end

        def validate(env, errors)
          errors.add("fabfile does not exist.") if not File.exist?(fabfile_path)

          command = "#{fabric_path} -V"
          output = execute(command)
          errors.add("fabric command does not exist.") if not $?.success?

          command = "#{fabric_path} -f #{fabfile_path} -l"
          output = execute(command)
          errors.add("#{fabfile_path} could not recognize by fabric.") if not $?.success?

          for task in tasks
             task = task.split(':').first
             command = "#{fabric_path} -f #{fabfile_path} -d #{task}"
             output = execute(command)
             errors.add("#{task} task does not exist.") if not $?.success?
           end
        end

        def fabfile_path
          @fabfile_path || _default_fabfile_path
        end

        def fabric_path
          @fabric_path || _default_fabric_path
        end

        def python_path
          @python_path || _default_python_path
        end

        def tasks
          @tasks ||= []
        end

        # Adds a recipe to the run list
        def add_task(name)
          tasks << name
        end
      end

      def self.config_class
        Config
      end

      def provision!
        ssh_info = env[:vm].ssh.info
        user = ssh_info[:username]
        host = ssh_info[:host]
        port = ssh_info[:port]
        private_key = ssh_info[:private_key_path]
        system "#{config.fabric_path} -i #{private_key} --fabfile=#{config.fabfile_path} --user=#{user} --hosts=#{host} --port=#{port} #{config.tasks.join(' ')}"
      end
    end
  end
end

Vagrantfile

# -*- mode: ruby -*-
# vi: set ft=ruby :

require "./fabric_provisioner.rb"

Vagrant::Config.run do |config|

  # snip

  config.vm.provision Vagrant::Provisioners::Fabric do |fab|
    fab.fabric_path = '/path/to/fab'
    fab.python_path = '/path/to/python'

    fab.add_task 'apt:openssl'
    fab.add_task 'apt:apache2'

  # snip
end

I have published the new version of vagrant-fabric plugin here (https://rubygems.org/gems/vagrant-fabric).
You can install it with just typing "vagrant plugin install vagrant-fabric".

And I changed my source code using your forked version.
Thank you for your contribution :)