pango-1.13.2 depends on >=glib-2.12, which is masked in advance of the gnome-2.16 update. I've masked pango-1.13.2 locally, and I think it should either be removed (as it appears to have been an interim development release, with 1.14.3 being the latest) or at least masked.
It was an interim thing. There must have been a sync in the middle of my updates. It's fixed now.
Just noticed the change in cvs. Thanks.