Linux on the Gamecube?

An Anonymous Coward asks: "Previously on Slashdot we have covered the hacking and programming of numerous consoles,- the Xbox, Dreamcast , and of course the Playstation 2. With Linux migrating to all of these platforms as fast as you can blink, why isn't it that I haven't heard anything about the Gamecube. These little beasts have been promoted by Nintendo as easy to develop for, so are there as yet any open source tools for Gamecube development? Are there any Initiatives to get an alternative OS on these systems? The feature of being able to plug a gameboy advance into one of these units makes them even more hack worthy." There was a Sourceforge project for this, but it's activity stats are fairly flat. What barriers are there in getting Linux to run on this piece of hardware, and how do they compare with the difficulties faced by similar projects on the X-Box?"