Arboreta is a graphical framework designed to make prototyping and writing common lisp applications easy, and aims to host a full suite of development tools, so common lisp development can be done without having to rely on other languages. Conceptually, it's somewhere between Sketch and McCLIM, covering both basic drawing and interface design.
Arboreta depends on xlib, xkb, cairo, and pango, the debian packages for which are: libx11-dev, libxkbcommon-x11-dev, libcairo2-dev, and libpango1.0-dev.
Arboreta requires quicklisp to run. It's been tested on sbcl, but should work on other CL implementations.
to install quicklisp, head over to quicklisp's website and follow the instructions there.
Make sure you run (ql:add-to-init-file), otherwise quicklisp won't be avaliable when you start your interpreter.