[Haskell-cafe] 2D symmetry groups implementation in Haskell?

[Stuart Hungerford]

Hi,

As per the subject line--does anyone know of any implementations of 2D
(planar) symmetry groups in Haskell?  (i.e. "rosette", "frieze" and
"wallpaper") groups?

I've looked in Hackage but as a complete Haskell novice may not being
looking in the right places or communities.

Many thanks,

Stu