Resolving dependencies... cabal: Could not resolve dependencies: next goal: iteratee-parsec (user goal) rejecting: iteratee-parsec-0.0.6, 0.0.5, 0.0.4 (global constraint requires ==0.0.3) trying: iteratee-parsec-0.0.3 trying: base-4.8.1.0/installed-4f7... (dependency of iteratee-parsec-0.0.3) trying: parsec-3.1.9 (dependency of iteratee-parsec-0.0.3) next goal: mtl (dependency of parsec-3.1.9) rejecting: mtl-2.2.1, 2.2.0.1, 2.2 (conflict: transformers==0.2.2.1, mtl => transformers==0.4.*) rejecting: mtl-2.1.3.1, 2.1.2 (conflict: transformers==0.2.2.1, mtl => transformers==0.3.*) rejecting: mtl-2.1.1, 2.1 (conflict: base==4.8.1.0/installed-4f7..., mtl => base<4.6) trying: mtl-2.0.1.1 next goal: ListLike (dependency of iteratee-parsec-0.0.3) rejecting: ListLike-4.2.1, 4.2.0, 4.1.1, 4.1.0, 4.0.2, 4.0.1, 4.0.0, 3.1.7.1, 3.1.7, 3.1.6, 3.1.5, 3.1.4, 3.1.2, 3.1.1, 3.1.0, 3.0.1, 2.0.1, 2.0.0 (conflict: iteratee-parsec => ListLike>=1.0 && <2) rejecting: ListLike-1.1.0, 1.0.2 (conflict: mtl==2.0.1.1, ListLike => mtl>=1.1.0 && <1.2) rejecting: ListLike-1.0.1 (conflict: base==4.8.1.0/installed-4f7..., ListLike => base<4.4) rejecting: ListLike-1.0.0 (conflict: base==4.8.1.0/installed-4f7..., ListLike => base<4) Dependency tree exhaustively searched.