Resolving dependencies... cabal: Could not resolve dependencies: trying: base-4.9.0.0/installed-4.9... (dependency of time-warp-1.1.1.1) trying: primitive-0.6.2.0 (dependency of tf-random-0.5) trying: conduit-combinators-1.0.8.3 (dependency of stm-conduit-3.0.0) trying: mono-traversable-1.0.1 (dependency of conduit-combinators-1.0.8.3) next goal: vector (dependency of conduit-combinators-1.0.8.3) rejecting: vector-0.11.0.0, vector-0.10.12.3 (conflict: primitive==0.6.2.0, vector => primitive>=0.5.0.1 && <0.6.2) rejecting: vector-0.10.12.2, vector-0.10.12.1, vector-0.10.11.0, vector-0.10.10.0, vector-0.10.9.2, vector-0.10.9.1, vector-0.10.9.0 (conflict: primitive==0.6.2.0, vector => primitive>=0.5.0.1 && <0.6) rejecting: vector-0.10.0.1, vector-0.10 (conflict: base==4.9.0.0/installed-4.9..., vector => base>=4 && <4.7) rejecting: vector-0.9.1, vector-0.9, vector-0.8, vector-0.7.1, vector-0.7.0.1, vector-0.7, vector-0.6.0.2, vector-0.6.0.1, vector-0.6, vector-0.5, vector-0.4.2, vector-0.4.1, vector-0.4, vector-0.3.1, vector-0.3, vector-0.2, vector-0.1 (conflict: mono-traversable => vector>=0.10) rejecting: vector-0.10.12.0, vector-0.10.9.3 (conflict: primitive==0.6.2.0, vector => primitive>=0.5.0.1 && <0.6) Dependency tree exhaustively searched.