I know this isn't exactly what you're thinking, but a chromebook might be workable. Another option is an Android tablet with a keyboard, just pick one with an

I know this isn't exactly what you're thinking, but a chromebook might be workable. Another option is an Android tablet with a keyboard, just pick one with an unlockable bootloader so that you can run your own software. That said, I'd love to see an ARM option from Framework.