Resolving dependencies... cabal: Could not resolve dependencies: next goal: aws-sdk (user goal) rejecting: aws-sdk-0.12.4, aws-sdk-0.12.3, aws-sdk-0.12.2, aws-sdk-0.12.1, aws-sdk-0.12.0, aws-sdk-0.11.3.3, aws-sdk-0.11.3.2, aws-sdk-0.11.3.1, aws-sdk-0.11.3, aws-sdk-0.11.2, aws-sdk-0.11.1, aws-sdk-0.11.0, aws-sdk-0.10.0, aws-sdk-0.9.4.1, aws-sdk-0.9.4, aws-sdk-0.9.3.0, aws-sdk-0.9.2.1, aws-sdk-0.9.1.0, aws-sdk-0.9.0.0, aws-sdk-0.8.0.0, aws-sdk-0.7.1.0, aws-sdk-0.7.0.0, aws-sdk-0.6.0.0, aws-sdk-0.5.0.0, aws-sdk-0.4.3.0, aws-sdk-0.4.2.0, aws-sdk-0.4.1.0, aws-sdk-0.4.0.0, aws-sdk-0.3.0.0, aws-sdk-0.2.0.0, aws-sdk-0.1.2.0 (constraint from user target requires ==0.1.1.0) trying: aws-sdk-0.1.1.0 trying: base-4.9.0.0/installed-4.9... (dependency of aws-sdk-0.1.1.0) trying: pretty-1.1.3.3/installed-1.1... (dependency of template-haskell-2.11.0.0/installed-2.1...) trying: xml-conduit-1.4.0.2 (dependency of aws-sdk-0.1.1.0) trying: aeson-1.0.2.1 (dependency of http-conduit-2.2.3) next goal: containers (dependency of aws-sdk-0.1.1.0) rejecting: containers-0.5.7.1/installed-0.5..., containers-0.5.9.1, containers-0.5.8.1, containers-0.5.7.1, containers-0.5.7.0, containers-0.5.6.3, containers-0.5.6.2, containers-0.5.6.1, containers-0.5.6.0, containers-0.5.5.1, containers-0.5.5.0, containers-0.5.4.0, containers-0.5.3.1, containers-0.5.3.0, containers-0.5.2.1, containers-0.5.2.0, containers-0.5.1.0, containers-0.5.0.0 (conflict: aws-sdk => containers<=0.4.2.1) rejecting: containers-0.4.2.1 (conflict: pretty => deepseq==1.4.2.0/installed-1.4..., containers => deepseq>=1.2 && <1.4) rejecting: containers-0.4.2.0 (conflict: pretty => deepseq==1.4.2.0/installed-1.4..., containers => deepseq>=1.2 && <1.3) rejecting: containers-0.4.1.0 (conflict: base==4.9.0.0/installed-4.9..., containers => base>=4.2 && <4.8) rejecting: containers-0.4.0.0, containers-0.3.0.0 (conflict: base==4.9.0.0/installed-4.9..., containers => base>=4.2 && <4.7) rejecting: containers-0.2.0.1, containers-0.2.0.0 (conflict: aeson => containers>=0.2.4.1) rejecting: containers-0.1.0.1, containers-0.1.0.0 (conflict: xml-conduit => containers>=0.2) Backjump limit reached (currently 2000, change with --max-backjumps or try to run with --reorder-goals).