Resolving dependencies... cabal: Could not resolve dependencies: next goal: accelerate-cuda (user goal) rejecting: accelerate-cuda-0.15.1.0, 0.15.0.0, 0.14.0.0, 0.13.0.4, 0.13.0.3, 0.13.0.2, 0.13.0.1, 0.13.0.0, 0.12.1.2, 0.12.1.1 (global constraint requires ==0.12.1.0) trying: accelerate-cuda-0.12.1.0 trying: unix-2.7.1.0/installed-643... (dependency of accelerate-cuda-0.12.1.0) trying: time-1.5.0.1/installed-c20... (dependency of unix-2.7.1.0/installed-643...) trying: deepseq-1.4.1.1/installed-8fb... (dependency of time-1.5.0.1/installed-c20...) next goal: accelerate (dependency of accelerate-cuda-0.12.1.0) rejecting: accelerate-0.15.1.0, 0.15.0.0, 0.14.0.0, 0.13.0.5, 0.13.0.4, 0.13.0.3, 0.13.0.2, 0.13.0.1, 0.13.0.0 (conflict: accelerate-cuda => accelerate>=0.12.1 && <0.13) rejecting: accelerate-0.12.2.0, 0.12.1.0 (conflict: deepseq => array==0.5.1.0/installed-d42..., accelerate => array>=0.3 && <0.5) rejecting: accelerate-0.12.0.0, 0.10.0.0, 0.9.0.1, 0.9.0.0, 0.8.1.0, 0.8.0.0, 0.7.1.0, 0.6.0.0, 0.5.0.0, 0.4.0 (conflict: accelerate-cuda => accelerate>=0.12.1 && <0.13) Dependency tree exhaustively searched.