fix it so it works on 'espresso' with OpenGL version 2.1 Mesa 8.0.5 on Gallium 0...
-rw-r--r-- 5 .gitignore
drwxr-xr-x - Geometry
-rw-r--r-- 35110 LICENSE
-rw-r--r-- 127 NEWS
-rw-r--r-- 887 README
-rw-r--r-- 46 Setup.hs
-rw-r--r-- 1226 butterflies.cabal
drwxr-xr-x - data
drwxr-xr-x - flat
drwxr-xr-x - hyperbolic