[Puppet Users] Puppet 3.1 - remove packages in order/with dependancies.

Hi All.

I would like to remove packages in a specified order because they are
connected with dependencies.
I use:
#cat /etc/redhat-release;uname -r
CentOS release 6.3 (Final)
2.6.32-279.9.1.el6.centos.plus.x86_64
#rpm -qa | grep -i puppet
puppet-3.1.0-1.el6.noarch

In my module manifest:
class base::dell {
..
package { "Lib_Utils": ensure => absent }
package { "MegaCli": ensure => absent }
..
}
Is there a way to ensure that MegaCli will be uninstalled before Lib_Utils
and then Lib_Utils will be removed? How can I in puppet language enforce
package dependencies in this case?

Best regards,
Rafal Radecki.