Resolving dependencies... cabal: Could not resolve dependencies: next goal: authenticate (user goal) rejecting: authenticate-1.3.2.11, 1.3.2.10, 1.3.2.9, 1.3.2.8, 1.3.2.7, 1.3.2.6, 1.3.2.5, 1.3.2.4, 1.3.2.3, 1.3.2.2, 1.3.2.1, 1.3.2, 1.3.1.2, 1.3.1.1, 1.3.1, 1.3.0.1, 1.3.0, 1.2.1.1, 1.2.1, 1.2.0.1, 1.2.0, 1.1.0, 1.0.0.1, 1.0.0, 0.11.1, 0.11.0.1, 0.11.0, 0.10.4, 0.10.3.1, 0.10.3, 0.10.2.2, 0.10.2.1, 0.10.2 (global constraint requires ==0.10.1) trying: authenticate-0.10.1 trying: base-4.8.1.0/installed-4f7... (dependency of authenticate-0.10.1) next goal: process (dependency of authenticate-0.10.1) rejecting: process-1.2.3.0/installed-f02..., 1.4.1.0, 1.4.0.0, 1.3.0.0, 1.2.3.0, 1.2.2.0, 1.2.1.0, 1.2.0.0 (conflict: authenticate => process>=1.0.1.1 && <1.2) trying: process-1.1.0.2 next goal: deepseq (dependency of process-1.1.0.2) 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: process => deepseq>=1.1 && <1.4) rejecting: deepseq-1.3.0.2 (conflict: base==4.8.1.0/installed-4f7..., deepseq => base>=4.3 && <4.8) trying: deepseq-1.3.0.1 next goal: array (dependency of deepseq-1.3.0.1) rejecting: array-0.5.1.0/installed-d42..., 0.5.1.0, 0.5.0.0 (conflict: deepseq => array>=0.1 && <0.5) rejecting: array-0.4.0.1 (conflict: base==4.8.1.0/installed-4f7..., array => base>=4.2 && <4.7) rejecting: array-0.4.0.0 (conflict: base==4.8.1.0/installed-4f7..., array => base>=4.2 && <4.6) rejecting: array-0.3.0.3 (conflict: base==4.8.1.0/installed-4f7..., array => base>=4.2 && <4.5) rejecting: array-0.3.0.2, 0.3.0.1 (conflict: base==4.8.1.0/installed-4f7..., array => base>=4.2 && <4.4) rejecting: array-0.3.0.0 (conflict: base==4.8.1.0/installed-4f7..., array => base>=3 && <4.4) rejecting: array-0.2.0.0, 0.1.0.0 (conflict: base==4.8.1.0/installed-4f7..., array => base<4.3) Dependency tree exhaustively searched.