Can't investigate/fix this today, will look into it later (unless someones beats me to it :) ... )
Created attachment 139237 [details] build.log
Might need libbonobo-2.20.3 if you have glib-2.15. It fixes some stuff with it, so I'd be pretty sure that's it if you use the overlay
Bah! Once again, you were right :) Remind me to buy you a beer at FOSDEM. bonobo-2.20.3 committed to the overlay