Resolving dependencies... cabal: Could not resolve dependencies: next goal: uhc-util (user goal) rejecting: uhc-util-0.1.6.3, 0.1.6.2, 0.1.6.0, 0.1.5.6, 0.1.5.5, 0.1.5.4, 0.1.5.3, 0.1.5.2, 0.1.5.1, 0.1.5.0, 0.1.4.0, 0.1.3.9, 0.1.3.8, 0.1.3.7, 0.1.3.5, 0.1.3.2, 0.1.3.1, 0.1.3.0, 0.1.2.0, 0.1.1.0, 0.1.0.2, 0.1.0.1 (global constraint requires ==0.1.0.0) trying: uhc-util-0.1.0.0 trying: bytestring-0.10.6.0/installed-236... (dependency of uhc-util-0.1.0.0) next goal: deepseq (dependency of bytestring-0.10.6.0/installed-236...) rejecting: deepseq-1.4.1.1/installed-8fb... (conflict: deepseq => array==0.5.1.0/installed-d42..., uhc-util => array>=0.4 && <0.5) 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: bytestring => deepseq==1.4.1.1/installed-8fb...) Dependency tree exhaustively searched.