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,
LibClang-0.0.7, LibClang-0.0.6 (constraint from user target requires ==0.0.2)
trying: LibClang-0.0.2
next goal: ffi (dependency of LibClang-0.0.2)
Dependency tree exhaustively searched.