Resolving dependencies... cabal: Could not resolve dependencies: next goal: hemokit (user goal) rejecting: hemokit-0.6.5, 0.6.4, 0.6.3, 0.6.2, 0.6.1, 0.6.0, 0.5.1, 0.5, 0.4.2 (global constraint requires ==0.4.1) trying: hemokit-0.4.1 next goal: hidapi (dependency of hemokit-0.4.1) rejecting: hidapi-0.1.3, 0.1.2, 0.1.1, 0.1 (conflict: hemokit => hidapi>=1.0) Dependency tree exhaustively searched.