automatically mount nfs share from your Vagrant guest onto your OS X host

Vagrantfile

Vagrant.configure(2) do |global_config|
  global_config.vm.define :my_project do |config|
    #
    # ... All your stuff ...
    #
    
    # Auto-Mount the boxes "/home/vagrant" onto your local machine
    if Vagrant.has_plugin? 'vagrant-triggers'
      def box_ip(config)
        if (net_cgf = config.vm.networks.find {|k, _| k == :private_network})
          net_cgf[1][:ip]
        end
      end

      config.trigger.before [:suspend, :halt, :force_halt, :destroy, :reload] do
        if ip = box_ip(config)
          if Vagrant::Util::Platform.darwin?
            run "umount -h #{ip}"
          end
        end
      end

      config.trigger.after [:up, :resume, :reload] do
        if ip = box_ip(config)
          remote_mnt = "#{ip}:/home/vagrant"
          local_mnt  = File.join(@machine.env.root_path, 'mnt')
          Dir.mkdir(local_mnt) unless Dir.exist?(local_mnt)

          if Vagrant::Util::Platform.darwin?
            current_mounts = run("mount")
            if m = current_mounts.lines.find {|l| l.include? remote_mnt}
              success "Already mounted #{m.strip}"
            else
              info "Mounting..."
              run("mount_nfs -v -r 8192 -w 8192 -bsT -o nonegnamecache #{remote_mnt} #{local_mnt}")
            end
          end
        end
      end
    end
    
  end
end