Resolving dependencies... cabal: Could not resolve dependencies: next goal: Haschoo (user goal) rejecting: Haschoo-0.1.2, 0.1.1, 0.1 (global constraint requires ==0.0) trying: Haschoo-0.0 next goal: list-tries (dependency of Haschoo-0.0) rejecting: list-tries-0.6.1, 0.6.0, 0.5.2, 0.5.1, 0.5, 0.4.3, 0.4.2, 0.4.1, 0.4, 0.3, 0.2 (conflict: Haschoo => list-tries==0.1.*) trying: list-tries-0.1 next goal: binary (dependency of list-tries-0.1) rejecting: binary-0.7.1.0/installed-0f4... (conflict: binary => array==0.5.0.0/installed-98a..., Haschoo => array==0.2.*) trying: binary-0.7.4.0 trying: bytestring-0.10.4.0/installed-9f4... (dependency of binary-0.7.4.0) next goal: deepseq (dependency of bytestring-0.10.4.0/installed-9f4...) rejecting: deepseq-1.3.0.2/installed-733... (conflict: deepseq => array==0.5.0.0/installed-98a..., Haschoo => array==0.2.*) rejecting: deepseq-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==1.3.0.2/installed-733...) Dependency tree exhaustively searched.