restart serice if a vhost file gets deployed

currently, using this, i get a dependcy look. Any ideas?

Error: Could not apply complete catalog: Found 1 dependency cycle:
(File[/etc/apache2/sites/phpmyadmin.conf] => Service[org.apache.httpd] => Class[Apache] => Apache_php::Vhost[phpmyadmin] => File[/etc/apache2/sites/phpmyadmin.conf])
Try the '--graph' option and opening the resulting '.dot' file in OmniGraffle or GraphViz