Resolving dependencies... cabal: Could not resolve dependencies: next goal: clckwrks (user goal) rejecting: clckwrks-0.23.10, 0.23.9, 0.23.8, 0.23.7, 0.22.4, 0.22.3, 0.22.2, 0.22.1, 0.22.0, 0.21.1, 0.21.0, 0.20.2, 0.20.1, 0.20.0, 0.19.3, 0.19.2, 0.19.1, 0.19.0, 0.18.3 (global constraint requires ==0.18.2) trying: clckwrks-0.18.2 trying: base-4.8.1.0/installed-4f7... (dependency of clckwrks-0.18.2) trying: web-routes-th-0.22.3 (dependency of clckwrks-0.18.2) trying: template-haskell-2.10.0.0/installed-90e... (dependency of web-routes-th-0.22.3) trying: pretty-1.1.2.0/installed-293... (dependency of template-haskell-2.10.0.0/installed-90e...) next goal: time (dependency of clckwrks-0.18.2) rejecting: time-1.5.0.1/installed-c20..., 1.5.0.1, 1.5 (conflict: clckwrks => time>=1.2 && <1.5) rejecting: time-1.4.2, 1.4.1, 1.4.0.2, 1.4.0.1, 1.4 (conflict: pretty => deepseq==1.4.1.1/installed-8fb..., time => deepseq>=1.1 && <1.4) rejecting: time-1.3, 1.2.0.5, 1.2.0.4, 1.2.0.3, 1.2.0.2, 1.2.0.1, 1.2 (conflict: base==4.8.1.0/installed-4f7..., time => base>=4 && <4.7) rejecting: time-1.1.4, 1.1.3, 1.1.2.4, 1.1.2.3, 1.1.2.2, 1.1.2.1, 1.1.2.0, 1.0 (conflict: clckwrks => time>=1.2 && <1.5) Backjump limit reached (change with --max-backjumps).