Resolving dependencies... cabal: Could not resolve dependencies: next goal: reactive-fieldtrip (user goal) rejecting: reactive-fieldtrip-0.0.9, 0.0.8, 0.0.7 (global constraint requires ==0.0.5) trying: reactive-fieldtrip-0.0.5 trying: base-4.8.1.0/installed-4f7... (dependency of reactive-fieldtrip-0.0.5) trying: FieldTrip-0.2.7 (dependency of reactive-fieldtrip-0.0.5) trying: graphicsFormats-0.1 (dependency of FieldTrip-0.2.7) trying: QuickCheck-2.8.1 (dependency of graphicsFormats-0.1) trying: containers-0.5.6.2/installed-2de... (dependency of QuickCheck-2.8.1) next goal: haskell98 (dependency of graphicsFormats-0.1) rejecting: haskell98-2.0.0.3 (conflict: base==4.8.1.0/installed-4f7..., haskell98 => base>=4.7 && <4.8) rejecting: haskell98-2.0.0.2 (conflict: base==4.8.1.0/installed-4f7..., haskell98 => base==4.6.*) rejecting: haskell98-2.0.0.1 (conflict: containers => array==0.5.1.0/installed-d42..., haskell98 => array>=0.3 && <0.5) rejecting: haskell98-2.0.0.0 (conflict: containers => array==0.5.1.0/installed-d42..., haskell98 => array>=0.3 && <0.4) rejecting: haskell98-1.1.0.1, 1.1.0.0, 1.0.1.1 (conflict: base==4.8.1.0/installed-4f7..., haskell98 => base>=3 && <4.6) rejecting: haskell98-1.0.1.0 (conflict: base==4.8.1.0/installed-4f7..., haskell98 => base<4.6) rejecting: haskell98-1.0 (conflict: base==4.8.1.0/installed-4f7..., haskell98 => base<4.3) Dependency tree exhaustively searched.