Resolving dependencies... cabal: Could not resolve dependencies: next goal: wai-handler-devel (user goal) rejecting: wai-handler-devel-2.0.0.2, 2.0.0.1, 2.0.0, 1.3.0.6, 1.3.0.5, 1.3.0.4, 1.3.0.3, 1.3.0.2, 1.3.0.1, 1.3.0, 1.2.0.2, 1.2.0.1 (global constraint requires ==1.2.0) trying: wai-handler-devel-1.2.0 trying: attoparsec-0.13.0.1 (dependency of wai-handler-devel-1.2.0) next goal: text (dependency of wai-handler-devel-1.2.0) rejecting: text-1.2.1.3, 1.2.1.2, 1.2.1.1, 1.2.1.0, 1.2.0.6, 1.2.0.5, 1.2.0.4, 1.2.0.3, 1.2.0.2, 1.2.0.0, 1.1.1.4, 1.1.1.3, 1.1.1.2, 1.1.1.1, 1.1.1.0, 1.1.0.1, 1.1.0.0, 1.0.0.1, 1.0.0.0 (conflict: wai-handler-devel => text>=0.7 && <0.12) rejecting: text-0.11.3.1, 0.11.3.0, 0.11.2.3, 0.11.2.2, 0.11.2.1, 0.11.2.0, 0.11.1.13, 0.11.1.12, 0.11.1.11, 0.11.1.10, 0.11.1.9, 0.11.1.8, 0.11.1.7, 0.11.1.6, 0.11.1.5, 0.11.1.3, 0.11.1.2, 0.11.1.1, 0.11.1.0, 0.11.0.8, 0.11.0.7, 0.11.0.6, 0.11.0.5, 0.11.0.4, 0.11.0.3, 0.11.0.2, 0.11.0.1, 0.11.0.0, 0.10.0.2, 0.10.0.1, 0.10.0.0, 0.9.1.0, 0.9.0.1, 0.9.0.0, 0.8.1.0, 0.8.0.0, 0.7.2.1, 0.7.1.0, 0.7.0.1, 0.7 (conflict: attoparsec => text>=1.1.1.3) rejecting: text-0.6, 0.5, 0.4, 0.3, 0.2, 0.1 (conflict: wai-handler-devel => text>=0.7 && <0.12) Backjump limit reached (change with --max-backjumps).