I used to contribute to Anarki but the lack of any reasonable error reporting made it insufferable, and I don't want to learn enough about compiler design and Racket to get a stack trace working. Good to see people are still working on Arc forks.

It's CL now, actually :) Dang ported HN to CL, so I thought I should match it. SBCL performance is really nice, though I think the main slowdown was the global `atomic` lock. Removing that was ... hard.