Resolving dependencies... cabal: Could not resolve dependencies: next goal: aeson-schema (user goal) rejecting: aeson-schema-0.4.0.0, 0.3.0.7, 0.3.0.6, 0.3.0.5, 0.3.0.4, 0.3.0.3, 0.3.0.2, 0.3.0.1, 0.3.0.0 (global constraint requires ==0.2.0.1) trying: aeson-schema-0.2.0.1 trying: base-4.8.1.0/installed-4f7... (dependency of aeson-schema-0.2.0.1) next goal: th-lift (dependency of aeson-schema-0.2.0.1) rejecting: th-lift-0.7.2, 0.7.1, 0.7, 0.6.1, 0.6 (conflict: aeson-schema => th-lift>=0.5.5 && <0.6) trying: th-lift-0.5.6 next goal: template-haskell (dependency of aeson-schema-0.2.0.1) rejecting: template-haskell-2.10.0.0/installed-90e..., 2.10.0.0 (conflict: th-lift => template-haskell>=2.4 && <2.10) rejecting: template-haskell-2.9.0.0 (conflict: base==4.8.1.0/installed-4f7..., template-haskell => base==4.7.*) rejecting: template-haskell-2.8.0.0 (conflict: base==4.8.1.0/installed-4f7..., template-haskell => base==4.6.*) rejecting: template-haskell-2.7.0.0 (conflict: base==4.8.1.0/installed-4f7..., template-haskell => base==4.5.*) rejecting: template-haskell-2.6.0.0 (conflict: base==4.8.1.0/installed-4f7..., template-haskell => base==4.4.*) rejecting: template-haskell-2.5.0.0 (conflict: base==4.8.1.0/installed-4f7..., template-haskell => base==4.3.*) rejecting: template-haskell-2.4.0.1 (conflict: base==4.8.1.0/installed-4f7..., template-haskell => base==4.2.*) rejecting: template-haskell-2.4.0.0 (conflict: base==4.8.1.0/installed-4f7..., template-haskell => base>=3 && <4.3) rejecting: template-haskell-2.3.0.1, 2.3.0.0, 2.2.0.0 (conflict: th-lift => template-haskell>=2.4 && <2.10) Dependency tree exhaustively searched.