Puppet: Is there a solution to avoid dependency on line #33?

classes.pp

class apt {
  include apt::update

  anchor { 'apt::update':
    require => Class['apt::update']
  }
}

class apt::update {
  exec { 'aptitude_update':
    refreshonly => true,
  }
}


define apt::sources_list() {
  file { "/etc/apt/sources.list.d/${name}":
    notify => Exec['aptitude_update']
  }

  anchor { "apt::sources_list::${name}":
    require => Class['apt::update']
  }
}

class php
{
  apt::sources_list { "dotdeb.org":
      # .... 
  }

  package { "php5-common":
      require => Class["apt"]
  }
}


node "host01" {
   include apt
   include php
}