Resolving dependencies... cabal: Could not resolve dependencies: next goal: hoodle (user goal) rejecting: hoodle-0.4.0, 0.4, 0.3, 0.2.2.1, 0.2.2.0, 0.2.2, 0.2.1, 0.2.0, 0.2, 0.1.1.1, 0.1.1.0, 0.1.1 (global constraint requires ==0.1.0.1) trying: hoodle-0.1.0.1 next goal: hoodle-core (dependency of hoodle-0.1.0.1) rejecting: hoodle-core-0.15.0, 0.15, 0.14, 0.13.0.0, 0.13.0, 0.13, 0.12, 0.11, 0.10, 0.9.0.0, 0.9.0, 0.9 (conflict: hoodle => hoodle-core==0.8.0) trying: hoodle-core-0.8.0 trying: lens-4.11 (dependency of hoodle-core-0.8.0) trying: transformers-compat-0.4.0.4 (dependency of lens-4.11) trying: transformers-compat-0.4.0.4:-two trying: transformers-compat-0.4.0.4:-three next goal: transformers (dependency of hoodle-core-0.8.0) rejecting: transformers-0.3.0.0/installed-16a... (conflict: transformers-compat-0.4.0.4:three => transformers>=0.4.1 && <0.5) rejecting: transformers-0.4.3.0, 0.4.2.0, 0.4.1.0 (conflict: hoodle-core => transformers==0.3.*) rejecting: transformers-0.3.0.0 (conflict: transformers-compat-0.4.0.4:three => transformers>=0.4.1 && <0.5) rejecting: transformers-0.2.2.1, 0.2.2.0, 0.2.1.0, 0.2.0.0, 0.1.4.0, 0.1.3.0, 0.1.1.0, 0.1.0.1, 0.1.0.0, 0.0.1.0, 0.0.0.0, 0.4.0.0 (conflict: hoodle-core => transformers==0.3.*) Dependency tree exhaustively searched.