Resolving dependencies...
cabal: Could not resolve dependencies:
next goal: repa-array (user goal)
rejecting: repa-array-4.0.0.2 (global constraint requires ==4.0.0.1)
trying: repa-array-4.0.0.1
next goal: repa-stream (dependency of repa-array-4.0.0.1)
rejecting: repa-stream-4.0.0.1 (conflict: repa-array => repa-stream==4.0.0.0)
Dependency tree exhaustively searched.