Adam Tindale
Sad news, my friend.
It isn't there yet, but it is coming. I use the P5 virtual glove with ChucK and everything is just peachy, but you have to grab the input from another program. The open source way to do it is to use PD and grab the HID object (I forget who wrote it, it isn't part of the vanilla install). You can then send OSC from PD to ChucK. Not pretty but it works.
Another approach is to turn your joystick into MIDI messages which then could be used by chuck. This can be done with PD on all platforms (but I only know that it would be trivial to interconnect MIDI-aware applications on Linux). Other than that, there is a simple applications for linux, called aseqjoy which does just that. http://www.terminatorx.org. It didn't work for me, for some reason, but I have a strange joystick(?!). ./MiS