I've done a little work on sugar->android pathways, including a (still incomplete) port of gtk3 to android. The primary tasks would be: 1) gtk/python container to run gtk3/py-gobject activities unmodified in Android; 2) reimplementation of Journal as Android service (using intents); 3) (optional):implementation of an Android home screen service to mimic the tradition "4 zoom" interface of sugar. There are no technical blockers as far as I can see. The collaboration infrastructure might also need to be revisited or reimagined, but many sugar activities do not use the collaboration apis. I am eager to discuss this further with anyone interested in doing the work. I've been developing/deploying on an android platform since the beginning of the year. Lots of info in my blog, too. --scott