I don't understand why people are so insistant on running Linux on everything including their pinguin-shaped vibrators. The system has poor hardware, it won't run Linux terribly well and it'll only waste resources - why do that for the sake of Linux apps which will still have to be ported or adjusted anyways when you might as well make equivalent apps just for the 3DS? It will save you time porting, sure, but in the long run it only wastes precious resources.
Well we already got Linux on the DS. It's kinda like Doom, people port it to everything just because.