Resolving dependencies... cabal: Could not resolve dependencies: next goal: servius (user goal) rejecting: servius-1.1.1.2, 1.1.1.1, 1.1.1, 1.1.0.2, 1.1.0.1, 1.1.0, 1.0.0.2, 1.0.0.1, 1.0.0, 0.0.2 (global constraint requires ==0.0.1) trying: servius-0.0.1 trying: transformers-0.3.0.0/installed-16a... (dependency of servius-0.0.1) trying: shakespeare-css-1.1.0 (dependency of servius-0.0.1) trying: shakespeare-2.0.5 (dependency of shakespeare-css-1.1.0) 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) Backjump limit reached (change with --max-backjumps).