Resolving dependencies...
cabal: Could not resolve dependencies:
trying: hsdev-0.1.4.3 (user goal)
next goal: ghc (dependency of hsdev-0.1.4.3)
rejecting: ghc-7.8.3/installed-0af... (conflict: hsdev => ghc>=7.10.0 &&
<7.11.0)
Dependency tree exhaustively searched.