Sorry for the long period of silence, but I'm currently slowly recovering from a head crash (my hard disk's head, to be exact, not *mine* :-).

I'm going to re-implement HOpenGL based on the .spec files and the new FFI, moving to the new library hierarchy on the way.

Great!

So I'm seeking advice where to put it exactly. My suggestion:

The GL/GLU modules reside into the subtrees

Graphics.Drawing.OpenGL.GL Graphics.Drawing.OpenGL.GLU

with 2 modules of the same names, re-exporting the modules from the subtrees. A module Graphics.Drawing.OpenGL re-exports those two modules again.

This looks fine.

The GLUT modules reside in Graphics.UI.GLUT, with a module of the same name, re-exporting the modules below it plus Graphics.Drawing.OpenGL (Graphics.UI.OpenGL.GLUT looks a little bit like overkill, IMHO).

I'm a little bit unhappy with "Drawing", "Rendering" would be more appropriate, but I could live with that...

I have no objection to a Drawing==>Rendering change; if you suggest this on libraries@haskell.org and no-one complains, then go ahead - we don't have any other occupants of the Graphics.Drawing namespace as yet. Cheers, Simon