Resolving dependencies... cabal: Could not resolve dependencies: next goal: process-conduit (user goal) rejecting: process-conduit-1.2.0.1, 1.2.0.0, 1.1.0.0, 1.0.0.3, 1.0.0.2, 1.0.0.1, 1.0.0.0, 0.5.0.5, 0.5.0.4 (global constraint requires ==0.5.0.3) trying: process-conduit-0.5.0.3 trying: shakespeare-text-1.1.0 (dependency of process-conduit-0.5.0.3) trying: shakespeare-2.0.5 (dependency of shakespeare-text-1.1.0) trying: transformers-0.3.0.0/installed-16a... (dependency of shakespeare-2.0.5) trying: exceptions-0.8.0.2 (dependency of shakespeare-2.0.5) trying: transformers-compat-0.4.0.4 (dependency of exceptions-0.8.0.2) 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.