Resolving dependencies... cabal: Could not resolve dependencies: next goal: warp-tls (user goal) rejecting: warp-tls-3.0.4.1, 3.0.4, 3.0.3, 3.0.2, 3.0.1.4, 3.0.1.3, 3.0.1.2, 3.0.1.1, 3.0.1, 3.0.0.1, 3.0.0, 2.0.5, 2.0.4, 2.0.3.3, 2.0.3.2, 2.0.3.1, 2.0.2, 2.0.1, 2.0.0.1, 2.0.0, 1.4.2, 1.4.1.4, 1.4.1.3, 1.4.1.2, 1.4.1.1, 1.4.1, 1.4.0.1 (global constraint requires ==1.4.0) trying: warp-tls-1.4.0 trying: tls-1.2.17 (dependency of warp-tls-1.4.0) next goal: tls-extra (dependency of warp-tls-1.4.0) rejecting: tls-extra-0.6.6, 0.6.5, 0.6.4, 0.6.3, 0.6.1, 0.6.0 (conflict: tls==1.2.17, tls-extra => tls>=1.1.0 && <1.2.0) rejecting: tls-extra-0.5.1, 0.5.0, 0.4.7.1, 0.4.7, 0.4.6.1, 0.4.6, 0.4.5, 0.4.4, 0.4.3, 0.4.2.1, 0.4.2, 0.4.1, 0.4.0, 0.3.1, 0.3.0, 0.2.3, 0.2.2, 0.2.1, 0.2.0, 0.1.9, 0.1.8, 0.1.7, 0.1.6, 0.1.5, 0.1.4, 0.1.3, 0.1.2, 0.1.1, 0.1.0 (conflict: warp-tls => tls-extra>=0.6) Backjump limit reached (change with --max-backjumps).