Resolving dependencies... cabal: Could not resolve dependencies: next goal: ad (user goal) rejecting: ad-4.3.1, 4.3, 4.2.4, 4.2.3, 4.2.2, 4.2.1.1, 4.2.1, 4.2.0.1, 4.2, 4.1, 4.0.0.1, 4.0, 3.4, 3.3.1.1, 3.3.1, 3.3.0.1, 3.2.2, 3.2.1, 3.2, 3.1.4, 3.1.3, 3.1.2, 3.1.1, 3.0.1, 3.0, 1.5.0.2, 1.5.0.1, 1.5, 1.4, 1.3.1, 1.3.0.1, 1.3, 1.2.0.2, 1.2.0.1, 1.2.0, 1.1.3, 1.1.1, 1.1.0.1, 1.1.0, 1.0.6, 1.0.5, 1.0.4 (global constraint requires ==1.0.3) trying: ad-1.0.3 trying: template-haskell-2.10.0.0/installed-90e... (dependency of ad-1.0.3) trying: pretty-1.1.2.0/installed-293... (dependency of template-haskell-2.10.0.0/installed-90e...) next goal: deepseq (dependency of pretty-1.1.2.0/installed-293...) rejecting: deepseq-1.4.1.1/installed-8fb... (conflict: deepseq => array==0.5.1.0/installed-d42..., ad => array>=0.2 && <0.4) rejecting: deepseq-1.4.1.2, 1.4.1.1, 1.4.1.0, 1.4.0.0, 1.3.0.2, 1.3.0.1, 1.3.0.0, 1.2.0.1, 1.2.0.0, 1.1.0.2, 1.1.0.1, 1.1.0.0, 1.0.0.0 (conflict: pretty => deepseq==1.4.1.1/installed-8fb...) Dependency tree exhaustively searched.