I don't understand. If you aren't willing to wait that amount of time, you're simply not getting working auto-complete at all. Hell, if you can't even compile the project, I don't see how you can meaningfully work on it all.
>Try prolog then (or something similar) and write something of the form sha512(X) = 0 this will initiate a brute-force search that will last essentially forever.
This is literally just another nonsensical party trick. I'm talking about something that someone might actually want to use, not contrived examples that really don't matter at all. I don't care to consider imaginary people that intentionally brick their programs.