I didn't mention debian as MintPPC is sort of like a top half to debian. You install a minimal debian with no gui, and then put all the MintPPC stuff from the repos on top of it. Though, I should mention, you must be connected to the internet during the MintPPC install. Wired is better as I'm not sure what wireless is supported in CLI only debian or how to configure what would be supported. Once you register, the install instructions are pretty simple.