Resolving dependencies... cabal: Could not resolve dependencies: trying: base-4.9.0.0/installed-4.9... (dependency of Hoed-0.3.4) next goal: snap-core (dependency of threepenny-gui-0.6.0.6) rejecting: snap-core-1.0.1.0, snap-core-1.0.0.0 (conflict: threepenny-gui => snap-core==0.9.*) trying: snap-core-0.9.8.0 next goal: MonadCatchIO-transformers (dependency of snap-core-0.9.8.0) rejecting: MonadCatchIO-transformers-0.3.1.3 (conflict: base==4.9.0.0/installed-4.9..., MonadCatchIO-transformers => base<4.9) rejecting: MonadCatchIO-transformers-0.3.1.2, MonadCatchIO-transformers-0.3.1.1, MonadCatchIO-transformers-0.3.1.0 (conflict: base==4.9.0.0/installed-4.9..., MonadCatchIO-transformers => base<4.8) rejecting: MonadCatchIO-transformers-0.3.0.0, MonadCatchIO-transformers-0.2.2.3, MonadCatchIO-transformers-0.2.2.2, MonadCatchIO-transformers-0.2.2.1, MonadCatchIO-transformers-0.2.2.0, MonadCatchIO-transformers-0.2.1.0 (conflict: base==4.9.0.0/installed-4.9..., MonadCatchIO-transformers => base<4.7) rejecting: MonadCatchIO-transformers-0.2.0.0, MonadCatchIO-transformers-0.1.0.1, MonadCatchIO-transformers-0.1.0.0, MonadCatchIO-transformers-0.0.2.0, MonadCatchIO-transformers-0.0.1.0 (conflict: snap-core => MonadCatchIO-transformers>=0.2.1 && <0.4) Backjump limit reached (currently 2000, change with --max-backjumps or try to run with --reorder-goals).