Has anyone used PyPy to create an entirely new language? Because it's fast and defined in a higher level language, it seems like a prime candidate for language design experimentation.
That said, it's not the best think to piggyback on for languages, because as of recent a lot of the optimizations are really fine-tuned for Python, and popular Python libraries like Django and Twisted.
It's also very nice for other languages too, because it implements the Python stdlib only, and I'm not quite sure how easy or possible "moving stuff around" (i.e. merge os and os.path or separate them even further) would be.
No IronPython this time =( it doesn't work well with Mono, and all testes were performed in Linux, so it's unfair to use only one in Windows OS. Soon I got time I'll test it again, this time checking memory footprint, etc...
Yep, a lot of modules still needs to be ported. There is some people (http://ademan.wordpress.com/) working in GSoC to get numpy running on PyPy for example.
That very first sentence took me about 5 minutes to chew through as I tried to determine if my "natural language parser" was acting up or if the sentence was messed up. The latter was the case.
