Resolving dependencies... cabal: Could not resolve dependencies: next goal: yackage (user goal) rejecting: yackage-0.7.0.8, 0.7.0.7, 0.7.0.6, 0.7.0.5, 0.7.0.4, 0.7.0.3, 0.7.0.2, 0.7.0.1, 0.7.0, 0.6.0.5, 0.6.0.4, 0.6.0.3, 0.6.0.2, 0.6.0.1, 0.6.0 (global constraint requires ==0.5.0.1) trying: yackage-0.5.0.1 trying: unordered-containers-0.2.5.1 (dependency of yackage-0.5.0.1) trying: deepseq-1.3.0.2/installed-733... (dependency of unordered-containers-0.2.5.1) next goal: http-types (dependency of yackage-0.5.0.1) rejecting: http-types-0.8.6, 0.8.5, 0.8.4, 0.8.3, 0.8.2, 0.8.1, 0.8.0, 0.7.3.0.1, 0.7.3, 0.7.2, 0.7.1, 0.7.0 (conflict: yackage => http-types>=0.6 && <0.7) rejecting: http-types-0.6.11, 0.6.10, 0.6.9, 0.6.8 (conflict: deepseq => array==0.5.0.0/installed-98a..., http-types => array>=0.2 && <0.5) rejecting: http-types-0.6.7, 0.6.6, 0.6.5.1, 0.6.5, 0.6.4, 0.6.3 (conflict: deepseq => array==0.5.0.0/installed-98a..., http-types => array>=0.2 && <0.4) rejecting: http-types-0.6.2, 0.6.1, 0.6.0.1, 0.6.0 (conflict: deepseq => array==0.5.0.0/installed-98a..., http-types => array>=0.3 && <0.4) rejecting: http-types-0.5.3, 0.5.2, 0.5.1, 0.5, 0.4.1, 0.4.0, 0.3.1, 0.3.0, 0.2.0, 0.1.1, 0.1 (conflict: yackage => http-types>=0.6 && <0.7) Dependency tree exhaustively searched.