xfce4-vala offers Vala bindings to Xfce Xfce: http://www.xfce.org Vala: http://live.gnome.org/Vala Xfce is an open source software targetting a lightweight desktop environment. Vala is a new programming language that aims to bring modern programming language features to GNOME developers without imposing any additional runtime requirements and without using a different ABI compared to applications and libraries written in C.