Resolving dependencies... cabal: Could not resolve dependencies: next goal: hsc3-process (user goal) rejecting: hsc3-process-0.10.0, 0.9.0, 0.8.0, 0.7.0, 0.6.0, 0.5.1, 0.5.0, 0.4.0, 0.3.1, 0.3.0, 0.2.1, 0.2.0 (global constraint requires ==0.1.2) trying: hsc3-process-0.1.2 trying: base-4.8.1.0/installed-4f7... (dependency of hsc3-process-0.1.2) next goal: template-haskell (dependency of hsc3-process-0.1.2) rejecting: template-haskell-2.10.0.0/installed-90e..., 2.10.0.0, 2.9.0.0, 2.8.0.0, 2.7.0.0, 2.6.0.0, 2.5.0.0, 2.4.0.1, 2.4.0.0 (conflict: hsc3-process => template-haskell==2.3.*) rejecting: template-haskell-2.3.0.1, 2.3.0.0 (conflict: base==4.8.1.0/installed-4f7..., template-haskell => base<4.3) rejecting: template-haskell-2.2.0.0 (conflict: hsc3-process => template-haskell==2.3.*) Dependency tree exhaustively searched.