Just to let people know I've ported this to the CE - it turns out it was quite easy actually, I feared it was going to be annoying, but I was pleasantly surprised :)
Anyway, it's easy to port "CLI" stuff now. For instance, here's a simple RPN calc I found on GitHub that took basically 2 minutes to get running (fprintf -> nio_printf):
(https://tiplanet.org/forum/images/forum_uploads/1381_1507477401_59da47992ca84.gif)
Source (has a "single" version with just one .h and one .c for easy project inclusion):
https://github.com/adriweb/nspire-io
(via TI-Planet (https://tiplanet.org/forum/viewtopic.php?f=12&t=20580))