app-text/ghostscript-gpl can use svg surface dev-cpp/cairomm can use svg/xlib/glitz surfaces dev-python/pycairo can use svg surface gnome-base/gnome-panel uses cairo_xlib_surface_create, so it needs cairo[X] dep media-gfx/graphviz can use xlib surface x11-libs/pango needs cairo's xlib surface for pango-view (as I understand)
Please file a bug for every single package. This is the best way to get it done.
added blocking bugs for every single package
Note that the "correct" fix for these problems is to have a check in autofoo as well.
All the dependencies were fixed. This tracker can be closed as well.