Resolving dependencies... cabal: Could not resolve dependencies: next goal: aws-sdk (user goal) rejecting: aws-sdk-0.12.4, 0.12.3, 0.12.2, 0.12.1, 0.12.0, 0.11.3.3, 0.11.3.2, 0.11.3.1, 0.11.3, 0.11.2, 0.11.1, 0.11.0, 0.10.0, 0.9.4.1, 0.9.4, 0.9.3.0, 0.9.2.1, 0.9.1.0, 0.9.0.0, 0.8.0.0, 0.7.1.0, 0.7.0.0, 0.6.0.0, 0.5.0.0, 0.4.3.0, 0.4.2.0, 0.4.1.0, 0.4.0.0, 0.3.0.0, 0.2.0.0, 0.1.2.0 (global constraint requires ==0.1.1.0) trying: aws-sdk-0.1.1.0 trying: simple-config-1.2.2.1 (dependency of aws-sdk-0.1.1.0) next goal: template-haskell (dependency of simple-config-1.2.2.1) rejecting: template-haskell-2.9.0.0/installed-3af... (conflict: template-haskell => containers==0.5.5.1/installed-23e..., aws-sdk => containers<=0.4.2.1) rejecting: template-haskell-2.10.0.0 (conflict: base==4.7.0.1/installed-e4b..., template-haskell => base==4.8.*) trying: template-haskell-2.9.0.0 next goal: containers (dependency of aws-sdk-0.1.1.0) rejecting: containers-0.5.5.1/installed-23e..., 0.5.6.3, 0.5.6.2, 0.5.6.1, 0.5.6.0, 0.5.5.1, 0.5.5.0, 0.5.4.0, 0.5.3.1, 0.5.3.0, 0.5.2.1, 0.5.2.0, 0.5.1.0, 0.5.0.0 (conflict: aws-sdk => containers<=0.4.2.1) rejecting: containers-0.4.2.1, 0.4.2.0, 0.4.1.0, 0.4.0.0, 0.3.0.0, 0.2.0.1, 0.2.0.0, 0.1.0.1, 0.1.0.0 (conflict: template-haskell => containers==0.5.*) Dependency tree exhaustively searched.