colord-gtk : GTK support library for colord ( https://www.freedesktop.org/software/colord/ )
gtksourceview : A text widget implementing syntax highlighting and other features ( https://wiki.gnome.org/Projects/GtkSourceView )
libwnck : A window navigation construction kit ( https://developer.gnome.org/libwnck/stable/ )
libxklavier : A library for the X Keyboard Extension (high-level API) ( https://www.freedesktop.org/wiki/Software/LibXklavier )
pango : Internationalized text layout and rendering library ( https://www.pango.org/ )
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