Resolving dependencies... cabal: Could not resolve dependencies: next goal: swish (user goal) rejecting: swish-0.9.1.5, 0.9.1.3, 0.9.1.2, 0.9.1.1, 0.9.1.0, 0.9.0.15, 0.9.0.14, 0.9.0.13, 0.9.0.12, 0.9.0.11, 0.9.0.10, 0.9.0.9, 0.9.0.8, 0.9.0.7, 0.9.0.6, 0.9.0.5, 0.9.0.4, 0.9.0.3, 0.9.0.2, 0.9.0.1, 0.9.0.0, 0.8.0.3, 0.8.0.2, 0.8.0.0, 0.7.0.2, 0.7.0.1, 0.7.0.0, 0.6.5.2 (global constraint requires ==0.6.5.1) trying: swish-0.6.5.1 trying: base-4.8.1.0/installed-4f7... (dependency of swish-0.6.5.1) next goal: time (dependency of swish-0.6.5.1) rejecting: time-1.5.0.1/installed-c20..., 1.5.0.1, 1.5 (conflict: swish => time>=1.1 && <1.5) trying: time-1.4.2 next goal: deepseq (dependency of time-1.4.2) 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: time => 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.