sample apt

sample_apt.pp

node 'node1.my.vm' {
  class { '::profile::apt':
    unstable => true,
  }
}

node 'vagrant.vm' {
  class { '::profile::apt':
    unstable => false,
  }
}

class profile::apt (
  $unstable = undef,
) {

  # let us use true/false for unstable/stable
  validate_bool($unstable)

  # define our real release
  $release = $unstable ? {
    true    => 'unstable',
    default => $::lsbdistcodename,
  }

  class { '::apt':
    always_apt_update => false,
    # Be careful with these options, they will purge
    # unmanaged repos
    purge_sources_list => true,
    purge_sources_list_d => true,
  }

  ::apt::source { "debian-${release}":
    location          => 'http://http.us.debian.org/debian',
    release           => $release,
    repos             => 'main contrib non-free',
    required_packages => 'debian-keyring debian-archive-keyring',
    key               => '46925553',
    key_server        => 'subkeys.pgp.net',
    include_src       => true,
  }
}