Go to www.haskell.org, and look at Libraries and Tools. There you will see HOpenGL, which is just what you seek.
I am sorry, I did not specify that I am already using HOpenGL and I am subscribed to their ML. The matter is that there is no binding to a truetype font library in hopengl and I am willing to make it. The problem, as I said, is that every font renderer already available for opengl is written in C++ and I don't know how to make a binding to a C++ library. This is more general than opengl, this problem might arise in the future for something completely unrelated to opengl. It seems that Haskell's FFI can only bind C. How could I solve this problem? Any idea is well accepted. Maybe I have to write a C++ -> C interface for my libary, but I don't know where to start, and besides, I am learning haskell since I want to avoid C and C++... Vincenzo Ciancia