See the parent of that link for other ways to patch. I just used one of the original patches and modified slightly for arc1. For arc2, I justed used ediff in emacs and copied the old date block over.
Instead of patching each release, maybe it would be better to simply redefine the date function in separate file and always load that.
Anarki works on Windows as of yesterday. (I think the solution was to use scheme's date and mkdir functions, which should fix the problem on all platforms.)
