clutter-gst : GStreamer integration library for Clutter ( https://blogs.gnome.org/clutter/ )
clutter-gtk : Library for embedding a Clutter canvas (stage) in GTK+ ( https://wiki.gnome.org/Projects/Clutter )
gexiv2 : GObject-based wrapper around the Exiv2 library ( https://wiki.gnome.org/Projects/gexiv2 )
graphene : A thin layer of types for graphic libraries ( https://ebassi.github.io/graphene/ )
libmediaart : Manages, extracts and handles media art caches ( https://github.com/GNOME/libmediaart )
Add an ebuild in portage :
The ebuild is now in the portage tree.
You can also use layman : emerge layman then layman -a gnome-next
For Paludis use this rsync : rsync://gentoo.zugaina.org/gnome-next-portage
If you have a problem : ycarus(-at-)zugaina.org