gtksourceview : A text widget implementing syntax highlighting and other features ( https://wiki.gnome.org/Projects/GtkSourceView )
vte : Library providing a virtual terminal emulator widget ( https://wiki.gnome.org/Apps/Terminal/VTE )
Add an ebuild in portage :
The ebuild is now in the portage tree.
You can also use layman : emerge layman then layman -a ambasta
For Paludis use this rsync : rsync://gentoo.zugaina.org/ambasta-portage
If you have a problem : ycarus(-at-)zugaina.org