Resolving dependencies... cabal: Could not resolve dependencies: next goal: bytestring-show (user goal) rejecting: bytestring-show-0.3.5.6, 0.3.5.5, 0.3.5.4 (global constraint requires ==0.3.5.3) trying: bytestring-show-0.3.5.3 trying: base-4.8.1.0/installed-4f7... (dependency of bytestring-show-0.3.5.3) next goal: containers (dependency of bytestring-show-0.3.5.3) rejecting: containers-0.5.6.2/installed-2de... (conflict: containers => array==0.5.1.0/installed-d42..., bytestring-show => array<0.5) trying: containers-0.5.6.3 next goal: deepseq (dependency of containers-0.5.6.3) rejecting: deepseq-1.4.1.1/installed-8fb... (conflict: deepseq => array==0.5.1.0/installed-d42..., bytestring-show => array<0.5) trying: deepseq-1.4.1.2 next goal: array (dependency of bytestring-show-0.3.5.3) rejecting: array-0.5.1.0/installed-d42..., 0.5.1.0, 0.5.0.0 (conflict: bytestring-show => array<0.5) rejecting: array-0.4.0.1 (conflict: base==4.8.1.0/installed-4f7..., array => base>=4.2 && <4.7) rejecting: array-0.4.0.0 (conflict: base==4.8.1.0/installed-4f7..., array => base>=4.2 && <4.6) rejecting: array-0.3.0.3 (conflict: base==4.8.1.0/installed-4f7..., array => base>=4.2 && <4.5) rejecting: array-0.3.0.2, 0.3.0.1 (conflict: base==4.8.1.0/installed-4f7..., array => base>=4.2 && <4.4) rejecting: array-0.3.0.0 (conflict: base==4.8.1.0/installed-4f7..., array => base>=3 && <4.4) rejecting: array-0.2.0.0, 0.1.0.0 (conflict: deepseq => array>=0.3 && <0.6) Dependency tree exhaustively searched.