Very nice. tup[0] is a another implementation of the same idea, that does work on Windows (unlike memoize) and has a few other goodies. I would also recommend

Very nice. tup[0] is a another implementation of the same idea, that does work on Windows (unlike memoize) and has a few other goodies. I would also recommend having a look at djb's "redo", implemented by apenwarr - it is much easier than to do right than a makefile, but unfortunately you still have to get the dependencies right yourself (which tup and memoize do for you automatically). [0] http://gittup.org/tup/ http://gittup.org/tup/