with a trivial script to setup bindmounts and such, you can easily run a full linux distro on android's kernel, concurrent with the main Android OS. Debian Kit for Android is just one example. gcc, emacs, ghc, whatever you need is an apt-get install away, w/ the Hacker's Keyboard and JackPal's term emulator, you are in as good or better shape than you would be on Maemo or Meego or Tizen..