Resolving dependencies... cabal: Could not resolve dependencies: next goal: happs-tutorial (user goal) rejecting: happs-tutorial-0.9.5, 0.9.4, 0.9.3, 0.9.2, 0.9.1, 0.9.0, 0.8.1, 0.8, 0.7.1, 0.7, 0.6.5, 0.6.4, 0.6.3, 0.6.2, 0.6.1, 0.6.0, 0.5.1, 0.5.0, 0.4.5, 0.4.4 (global constraint requires ==0.4.3) trying: happs-tutorial-0.4.3 trying: base-4.8.1.0/installed-4f7... (dependency of happs-tutorial-0.4.3) trying: HAppS-State-0.9.3 (dependency of happs-tutorial-0.4.3) next goal: HaXml (dependency of HAppS-State-0.9.3) rejecting: HaXml-1.25.3, 1.25.2, 1.25.1, 1.25, 1.24.1, 1.24, 1.23.3, 1.23.2, 1.23.1, 1.23, 1.22.5, 1.22.4, 1.22.3, 1.22.2, 1.22.1, 1.22, 1.20.2, 1.20.1, 1.20, 1.19.7, 1.19.6, 1.19.5, 1.19.4, 1.19.3, 1.19.2, 1.19.1, 1.19 (conflict: HAppS-State => HaXml>=1.13 && <1.14) trying: HaXml-1.13.3 next goal: haskell98 (dependency of HaXml-1.13.3) rejecting: haskell98-2.0.0.3, 2.0.0.2, 2.0.0.1, 2.0.0.0 (conflict: HaXml => haskell98<2) 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.