Unfortunately it looks like you would have to build from source. The best place for that would be Rich Webster's fork - https://github.com/rdwebster/Open-Quark - which is the version maintained by Indicee.
I am not going to install this, even if I would find it somewhere, hence ....
Anyway, if you don't want to look at it, that's your loss - while I don't think CAL has much of a future a lot of work was invested in it by a very talented team and there is probably something to be learned from it.
Actually, I did look into it several years back. If I remember correctly, CAL was not pure and still lazy. (An explosive combination, if you ask me.)