Resolving dependencies... cabal: Could not resolve dependencies: next goal: vty-menu (user goal) rejecting: vty-menu-0.0.3 (global constraint requires ==0.0.1) trying: vty-menu-0.0.1 trying: base-4.8.1.0/installed-4f7... (dependency of vty-menu-0.0.1) next goal: vty (dependency of vty-menu-0.0.1) rejecting: vty-5.4.0, 5.3.1, 5.3, 5.2.11, 5.2.10, 5.2.9, 5.2.8, 5.2.7, 5.2.6, 5.2.5, 5.2.4, 5.2.3, 5.2.2, 5.2.1, 5.2.0, 5.1.4, 5.1.3, 5.1.1, 5.1.0, 5.0.2, 5.0.1, 5.0.0, 4.7.5, 4.7.4, 4.7.3, 4.7.2, 4.7.1, 4.7.0.20, 4.7.0.18 (conflict: vty-menu => vty<=4.7.0.14) trying: vty-4.7.0.14 trying: parsec-3.1.9 (dependency of vty-4.7.0.14) trying: text-1.2.1.3 (dependency of parsec-3.1.9) trying: binary-0.7.5.0/installed-072... (dependency of text-1.2.1.3) next goal: deepseq (dependency of vty-4.7.0.14) 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: vty => 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) rejecting: deepseq-1.3.0.1, 1.3.0.0 (conflict: binary => array==0.5.1.0/installed-d42..., deepseq => array>=0.1 && <0.5) rejecting: deepseq-1.2.0.1 (conflict: binary => 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 (conflict: binary => containers==0.5.6.2/installed-2de..., deepseq => containers>=0.1 && <0.5) rejecting: deepseq-1.1.0.0 (conflict: binary => containers==0.5.6.2/installed-2de..., deepseq => containers>=0.2 && <0.4) rejecting: deepseq-1.0.0.0 (conflict: vty => deepseq>=1.1 && <1.4) Backjump limit reached (change with --max-backjumps).