I’m using Debian and have ported some very basic SDL graphics from another platform using the Debian libraries. They just worked. I would assume that other gui stuff would as well.
I’m glad to hear that other people are interested in Debian as well.
I'm planning to install debian on my Overo/FE, it seems to be a nice development platform, but how about setgpio and other gumstix related tools ? And how about GUI (with Chestnut43 and LCD) ? Are they working on debian or only the console ? Any experience ?