The topic itself is very interesting, I find that excelent libraries (i.e.: NetworkX) in a language (i.e: Python) can be quickly ported to other languages. It's a pity that those libraries can't be isolated and translated to many languages without an important extra effort. In the case of graph algorithms we have libraries for C++, C#, Python, Ruby, Java, etc with different features and qualities, but the weakness is that the library comes attached with a single programming language or VM.

It's an important trend to look and hope HaXe to be just one example of a project going in that direction.