Resolving dependencies... cabal: Could not resolve dependencies: next goal: persistent (user goal) rejecting: persistent-2.2.2.1, 2.2.2, 2.2.1, 2.2, 2.1.6, 2.1.5, 2.1.4, 2.1.3, 2.1.2, 2.1.1.7, 2.1.1.6, 2.1.1.5, 2.1.1.4, 2.1.1.3, 2.1.1.2, 2.1.1.1, 2.1.1, 2.1.0.2, 2.1.0.1, 2.1, 1.3.3, 1.3.2, 1.3.1.1, 1.3.1, 1.3.0.6, 1.3.0.5, 1.3.0.4, 1.3.0.3, 1.3.0.2, 1.3.0, 1.2.3.3, 1.2.3.2, 1.2.3.0, 1.2.2.0, 1.2.1.2, 1.2.1.1, 1.2.1, 1.2.0.2, 1.2.0.1, 1.2.0, 1.1.5.1, 1.1.5, 1.1.4, 1.1.3.2, 1.1.3.1, 1.1.3, 1.1.2, 1.1.0.1, 1.1.0, 1.0.2.2, 1.0.2.1, 1.0.2, 1.0.1.3, 1.0.1.2, 1.0.1.1, 1.0.1, 1.0.0, 0.9.0.4, 0.9.0.3, 0.9.0.2, 0.9.0.1, 0.9.0, 0.8.0.2, 0.8.0.1, 0.8.0, 0.7.0.1, 0.7.0, 0.6.4.4, 0.6.4.3, 0.6.4.2, 0.6.4.1, 0.6.4, 0.6.3, 0.6.2, 0.6.1, 0.5.1, 0.5.0, 0.4.2, 0.4.1, 0.4.0.1, 0.4.0, 0.3.1.3 (global constraint requires ==0.3.1.2) trying: persistent-0.3.1.2 trying: base-4.8.1.0/installed-4f7... (dependency of persistent-0.3.1.2) next goal: stm (dependency of persistent-0.3.1.2) rejecting: stm-2.4.4, 2.4.3, 2.4.2, 2.4, 2.3 (conflict: persistent => stm>=2.1 && <2.3) trying: stm-2.2.0.1 trying: array-0.5.1.0/installed-d42... (dependency of stm-2.2.0.1) next goal: containers (dependency of persistent-0.3.1.2) rejecting: containers-0.5.6.2/installed-2de..., 0.5.6.3, 0.5.6.2, 0.5.6.1, 0.5.6.0, 0.5.5.1, 0.5.5.0, 0.5.4.0, 0.5.3.1, 0.5.3.0, 0.5.2.1, 0.5.2.0, 0.5.1.0, 0.5.0.0 (conflict: persistent => containers>=0.2 && <0.5) trying: containers-0.4.2.1 next goal: deepseq (dependency of containers-0.4.2.1) rejecting: deepseq-1.4.1.1/installed-8fb..., 1.4.1.2, 1.4.1.1, 1.4.1.0, 1.4.0.0 (conflict: containers => deepseq>=1.2 && <1.4) rejecting: deepseq-1.3.0.2 (conflict: base==4.8.1.0/installed-4f7..., deepseq => base>=4.3 && <4.8) rejecting: deepseq-1.3.0.1, 1.3.0.0 (conflict: array==0.5.1.0/installed-d42..., deepseq => array>=0.1 && <0.5) rejecting: deepseq-1.2.0.1 (conflict: array==0.5.1.0/installed-d42..., deepseq => array>=0.1 && <0.4) rejecting: deepseq-1.2.0.0 (conflict: base==4.8.1.0/installed-4f7..., deepseq => base>=3 && <4.4) rejecting: deepseq-1.1.0.2, 1.1.0.1, 1.1.0.0, 1.0.0.0 (conflict: containers => deepseq>=1.2 && <1.4) Dependency tree exhaustively searched.