That's indeed an advice I've read [1].
But wouldn't it damage the performances, since code will have to go through an extra layer?

[1] http://blog.ezyang.com/2010/06/principles-of-ffi-api-design

2010/7/7 Chris Eidhof <chris@eidhof.nl>
On 5 jul 2010, at 23:48, Yves Parès wrote:

> Hello,
>
> I don't know if some of you are familiar with the SFML library (stands for Simple and Fast Multimedia Library) --> http://sfml-dev.org
> As SDL, SFML is a 2D graphics library, but conversely to SDL it provides a hardware-accelerated drawing, through OpenGL.
> Well, I'm currently writing its Haskell binding, and I'm stuck with design issues.
> What I'm heading to is a full IO binding, and that's what I'd like to avoid.

Have you considered writing a low-level binding and building a high-level library on top of that?

-chris