Resolving dependencies...
cabal: Could not resolve dependencies:
trying: polydata-0.3.0.0 (user goal)
trying: constraint-manip-0.1.0.0 (dependency of polydata-0.3.0.0)
next goal: indextype (dependency of polydata-0.3.0.0)
rejecting: indextype-0.3.0.0 (conflict: constraint-manip => indextype==0.2.*)
rejecting: indextype-0.2.3.0, indextype-0.2.2.0, indextype-0.2.0.0,
indextype-0.1.0.0, indextype-0.2.1.0 (conflict: polydata => indextype==0.3.*)
Dependency tree exhaustively searched.