my $cfg = My::Config->new_from_file('nysus.yml');
$cfg->process( $myfile );

package My::Config;
use Module::Pluggable require => '1',
                      sub_name => 'actions',
                      instantiate => 'new',
                      ;

sub My::Config::process( $self, $filename ) {
    for my $action ($self->actions) {
        $action->operate( $self, $filename );
    };
};