Resolving dependencies... cabal: Could not resolve dependencies: next goal: cereal-conduit (user goal) rejecting: cereal-conduit-0.7.2.3, 0.7.2.2, 0.7.2.1, 0.7.2, 0.7.1, 0.7, 0.6, 0.5, 0.0.6.1 (global constraint requires ==0.0.6) trying: cereal-conduit-0.0.6 trying: exception-transformers-0.4.0.1 (dependency of cereal-conduit-0.0.6) next goal: transformers (dependency of exception-transformers-0.4.0.1) rejecting: transformers-0.3.0.0/installed-16a... (conflict: transformers-compat-0.4.0.4:three => transformers>=0.4.1 && <0.5) trying: transformers-0.4.3.0 next goal: conduit (dependency of cereal-conduit-0.0.6) rejecting: conduit-1.2.4.2, 1.2.4.1, 1.2.4, 1.2.3.1, 1.2.3, 1.2.2.2, 1.2.2.1, 1.2.2, 1.2.1, 1.2.0.2, 1.2.0.1, 1.2.0, 1.1.7, 1.1.6, 1.1.5, 1.1.4, 1.1.3, 1.1.2.1, 1.1.2, 1.1.1.1, 1.1.1, 1.1.0.2, 1.1.0.1, 1.1.0, 1.0.17.1, 1.0.17, 1.0.16, 1.0.15.1, 1.0.15, 1.0.14, 1.0.13.1, 1.0.13, 1.0.12, 1.0.11.1, 1.0.11, 1.0.10.1, 1.0.10, 1.0.9.3, 1.0.9.2, 1.0.9.1, 1.0.9, 1.0.8, 1.0.7.4, 1.0.7.3, 1.0.7.2, 1.0.7.1, 1.0.7, 1.0.6, 1.0.5.1, 1.0.5, 1.0.4.2, 1.0.4.1, 1.0.4, 1.0.3, 1.0.2, 1.0.1, 1.0.0.2, 1.0.0.1, 1.0.0, 0.5.6, 0.5.5, 0.5.4.2, 0.5.4.1, 0.5.4, 0.5.3, 0.5.2.7, 0.5.2.6, 0.5.2.5, 0.5.2.4, 0.5.2.3, 0.5.2.2, 0.5.2.1, 0.5.2, 0.5.1, 0.5.0 (conflict: cereal-conduit => conduit>=0.4.0 && <0.5.0) rejecting: conduit-0.4.2, 0.4.1.1, 0.4.1, 0.4.0.1, 0.4.0 (conflict: transformers==0.4.3.0, conduit => transformers>=0.2.2 && <0.4) rejecting: conduit-0.3.0, 0.2.2, 0.2.1, 0.2.0, 0.1.1.1, 0.1.1, 0.1.0, 0.0.4, 0.0.3, 0.0.2, 0.0.1.1, 0.0.1, 0.0.0.2, 0.0.0.1, 0.0.0 (conflict: cereal-conduit => conduit>=0.4.0 && <0.5.0) Dependency tree exhaustively searched.