Resolving dependencies... cabal: Could not resolve dependencies: next goal: aws-elastic-transcoder (user goal) rejecting: aws-elastic-transcoder-0.2.0.2, 0.2.0.0, 0.1.0.1, 0.1.0.0 (global constraint requires ==0.0.0.1) trying: aws-elastic-transcoder-0.0.0.1 trying: transformers-0.3.0.0/installed-16a... (dependency of aws-elastic-transcoder-0.0.0.1) next goal: resourcet (dependency of aws-elastic-transcoder-0.0.0.1) rejecting: resourcet-1.1.5, 1.1.4.1, 1.1.4, 1.1.3.3, 1.1.3.2, 1.1.3.1, 1.1.3, 1.1.2.3, 1.1.2.2, 1.1.2.1, 1.1.2, 1.1.1, 1.1.0.1, 1.1.0 (conflict: aws-elastic-transcoder => resourcet>=0.3.3 && <0.5) trying: resourcet-0.4.10.2 trying: transformers-base-0.4.4 (dependency of resourcet-0.4.10.2) trying: transformers-compat-0.4.0.4 (dependency of transformers-base-0.4.4) trying: transformers-compat-0.4.0.4:-two rejecting: transformers-compat-0.4.0.4:-three (conflict: transformers==0.3.0.0/installed-16a..., transformers-compat-0.4.0.4:three => transformers>=0.4.1 && <0.5) rejecting: transformers-compat-0.4.0.4:+three (manual flag can only be changed explicitly) Dependency tree exhaustively searched.