Hi, current cairo depends on CSWgtk-doc, which is not available apparently.
Do you confirm that the new package is CSWgtk2doc ? http://www.opencsw.org/packages/CSWgtk2doc/ I'd guess it is what is neede, but I don't know what the old package did :)In case could you install it on 10x/10s/9x/9s machines ? It is not available at least on unstable10s and unstable9s
Riccardo
