Resolving dependencies...
cabal: Could not resolve dependencies:
next goal: LibClang (user goal)
rejecting: LibClang-3.4.0, LibClang-0.1.0, LibClang-0.0.9, LibClang-0.0.8
(constraint from user target requires ==0.0.7)
trying: LibClang-0.0.7
next goal: ffi (dependency of LibClang-0.0.7)
Dependency tree exhaustively searched.