import 'classes/*'
import 'nodes.pp'

Exec['apt-get-update'] -> Package <| |>

Exec {
  path => '/usr/bin:/usr/sbin:/bin',
}

exec { 'apt-get-update':
  command => '/usr/bin/apt-get update',
  require => File['/etc/apt/apt.conf.d/01proxy'],
}

file { '/etc/apt/apt.conf.d/01proxy':
  ensure => 'file',
  source => '/tmp/vagrant-puppet/manifests/files/apt-conf',
}
~~~~~~~~~~