From here on, this repo is intended only as a bootstrapping step for the
self hosted Idris 2. It will - as long as possible - be kept up to date
enough that it can build Idris 2, but won't be maintained beyond that.
Do two passes through delayed elaborators (it's impossible to predict
dependency order). Possibly this should keep going as long as it's
making progress? I'll consider that later.
A few people have reported issues that this won't build with Idris 1.3.1, which it won't. There's a note in INSTALL.md, but it's clearly not prominent enough! I will do a new release soon, but it does take time to do it properly!
Surprisingly == on Nat in the Idris prelude is linear! So shortcut that
by converting to an Integer first. Also a couple of small things in the
evaluator that have a small but noticeable effect when environments are
big.
