pkg:setup
ENV["XML_CATALOG_FILES"] = "#{etc}/xml/catalog"
[prefix/"docbook-xsl/catalog.xml", prefix/"docbook-xsl-ns/catalog.xml"].each do |catalog|
xmlcatalog --noout --del file://#{catalog} #{etc}/xml/catalog
xmlcatalog --noout --add nextCatalog  file://#{catalog} #{etc}/xml/catalog