Resolving dependencies...
cabal: Could not resolve dependencies:
next goal: ghcjs-websockets (user goal)
rejecting: ghcjs-websockets-0.3.0.3 (global constraint requires ==0.3.0.2)
trying: ghcjs-websockets-0.3.0.2
next goal: ghcjs-base (dependency of ghcjs-websockets-0.3.0.2)
Dependency tree exhaustively searched.