I've revived http://hackage.haskell.org/package/scenegraph: https://github.com/homectl/lambdaray/tree/main/scenegraph. I'd like to take over maintenance of that package. I can't reach the original author (email address no longer exists). Also, I'm looking for people who would like to join me in working on it and a 3D rendering pipeline based on GPipe. Currently hanging out in #implicitcad on freenode.

Cheers,

Pippijn