Resolving dependencies... cabal: Could not resolve dependencies: next goal: hledger-vty (user goal) rejecting: hledger-vty-0.16.1, 0.16, 0.15.2 (global constraint requires ==0.15.1) trying: hledger-vty-0.15.1 next goal: vty (dependency of hledger-vty-0.15.1) 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 (conflict: hledger-vty => vty>=4.6.0.1 && <4.8) trying: vty-4.7.5 trying: string-qq-0.0.2 (dependency of vty-4.7.5) trying: template-haskell-2.10.0.0/installed-90e... (dependency of string-qq-0.0.2) next goal: pretty (dependency of template-haskell-2.10.0.0/installed-90e...) rejecting: pretty-1.1.2.0/installed-293... (conflict: pretty => deepseq==1.4.1.1/installed-8fb..., vty => deepseq>=1.1 && <1.4) rejecting: pretty-1.1.3.2, 1.1.3.1, 1.1.2.1, 1.1.2.0, 1.1.1.3, 1.1.1.2, 1.1.1.1, 1.1.1.0, 1.1.0.0, 1.0.1.2, 1.0.1.1, 1.0.1.0, 1.0.0.0 (conflict: template-haskell => pretty==1.1.2.0/installed-293...) Backjump limit reached (change with --max-backjumps).