Puppet users - May 2008 - how to manage packages group

I would be able to manage packages group but i don''t know if puppet can
do it.

Currently, i have a class to do it and it could be better :

class kernel-Linux-packages-profiles::dev {
        $command = $operatingsystem ? {
                Fedora => "yum -y groupinstall \"Development
Tools\" &&
touch /root/init-packages-dev.ok",
                default => undef
        }
        exec {
                "install":
                        command => $command,
                        unless => "test -f
/root/init-packages-dev.ok";
        }
}


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