Resolving dependencies...
cabal: Could not resolve dependencies:
next goal: mohws (user goal)
rejecting: mohws-0.2.1.5, mohws-0.2.1.4, mohws-0.2.1.3, mohws-0.2.1.2,
mohws-0.2.1.1, mohws-0.2.1, mohws-0.2.0.1 (constraint from user target
requires ==0.2)
trying: mohws-0.2
next goal: ghc (dependency of mohws-0.2)
rejecting: ghc-8.0.1.20161018/installed-8.0... (conflict: mohws => ghc>=6.8 &&
<6.9)
Dependency tree exhaustively searched.