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, 0.0.5, 0.0.4 (global constraint requires ==0.0.3) trying: reactive-fieldtrip-0.0.3 trying: base-4.8.1.0/installed-4f7... (dependency of reactive-fieldtrip-0.0.3) trying: vector-space-0.10.2 (dependency of reactive-fieldtrip-0.0.3) trying: MemoTrie-0.6.2 (dependency of vector-space-0.10.2) trying: void-0.7.1 (dependency of MemoTrie-0.6.2) trying: semigroups-0.17.0.1 (dependency of void-0.7.1) trying: semigroups-0.17.0.1:+hashable trying: semigroups-0.17.0.1:+unordered-containers trying: semigroups-0.17.0.1:+text trying: text-1.2.1.3 (dependency of semigroups-0.17.0.1:+text) trying: binary-0.7.5.0/installed-072... (dependency of text-1.2.1.3) trying: semigroups-0.17.0.1:+tagged trying: semigroups-0.17.0.1:+deepseq trying: semigroups-0.17.0.1:+containers trying: semigroups-0.17.0.1:+bytestring trying: FieldTrip-0.2.7 (dependency of reactive-fieldtrip-0.0.3) trying: graphicsFormats-0.1 (dependency of FieldTrip-0.2.7) 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: binary => array==0.5.1.0/installed-d42..., haskell98 => array>=0.3 && <0.5) rejecting: haskell98-2.0.0.0 (conflict: binary => 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) Backjump limit reached (change with --max-backjumps).