Resolving dependencies... cabal: Could not resolve dependencies: next goal: happstack-helpers (user goal) rejecting: happstack-helpers-0.56 (constraint from user target requires ==0.54) trying: happstack-helpers-0.54 trying: base-4.9.0.0/installed-4.9... (dependency of happstack-helpers-0.54) next goal: text (dependency of happstack-helpers-0.54) rejecting: text-1.2.2.1, text-1.2.2.0, text-1.2.1.3, text-1.2.1.2, text-1.2.1.1, text-1.2.1.0, text-1.2.0.6, text-1.2.0.5, text-1.2.0.4, text-1.2.0.3, text-1.2.0.2, text-1.2.0.0, text-1.1.1.4, text-1.1.1.3, text-1.1.1.2, text-1.1.1.1, text-1.1.1.0, text-1.1.0.1, text-1.1.0.0, text-1.0.0.1, text-1.0.0.0, text-0.11.3.1, text-0.11.3.0, text-0.11.2.3, text-0.11.2.2, text-0.11.2.1, text-0.11.2.0, text-0.11.1.13, text-0.11.1.12, text-0.11.1.11, text-0.11.1.10, text-0.11.1.9, text-0.11.1.8, text-0.11.1.7, text-0.11.1.6, text-0.11.1.5, text-0.11.1.3, text-0.11.1.2, text-0.11.1.1, text-0.11.1.0, text-0.11.0.8, text-0.11.0.7, text-0.11.0.6, text-0.11.0.5, text-0.11.0.4, text-0.11.0.3, text-0.11.0.2, text-0.11.0.1, text-0.11.0.0 (conflict: happstack-helpers => text>=0.7 && <0.11) rejecting: text-0.10.0.2, text-0.10.0.1, text-0.10.0.0, text-0.9.1.0, text-0.9.0.1 (conflict: base==4.9.0.0/installed-4.9..., text => base<4.4) rejecting: text-0.9.0.0, text-0.8.1.0, text-0.8.0.0, text-0.7.2.1 (conflict: base==4.9.0.0/installed-4.9..., text => base<4.3) rejecting: text-0.7.1.0, text-0.7.0.1, text-0.7 (conflict: base==4.9.0.0/installed-4.9..., text => base<4.4) rejecting: text-0.6, text-0.5, text-0.4, text-0.3, text-0.2, text-0.1 (conflict: happstack-helpers => text>=0.7 && <0.11) Dependency tree exhaustively searched.