Resolving dependencies... cabal: Could not resolve dependencies: next goal: hoodle (user goal) rejecting: hoodle-0.4.0, 0.4, 0.3, 0.2.2.1, 0.2.2.0, 0.2.2, 0.2.1, 0.2.0, 0.2, 0.1.1.1, 0.1.1.0, 0.1.1, 0.1.0.1, 0.1.0.0, 0.1.0 (global constraint requires ==0.1) trying: hoodle-0.1 next goal: hoodle-core (dependency of hoodle-0.1) rejecting: hoodle-core-0.15.0, 0.15, 0.14, 0.13.0.0, 0.13.0, 0.13, 0.12, 0.11, 0.10, 0.9.0.0, 0.9.0, 0.9, 0.8.0, 0.8 (conflict: hoodle => hoodle-core>=0.6.999 && <0.8) trying: hoodle-core-0.7.1 next goal: template-haskell (dependency of hoodle-core-0.7.1) rejecting: template-haskell-2.9.0.0/installed-3af... (conflict: template-haskell => containers==0.5.5.1/installed-23e..., hoodle => containers==0.4.*) rejecting: template-haskell-2.10.0.0 (conflict: base==4.7.0.1/installed-e4b..., template-haskell => base==4.8.*) trying: template-haskell-2.9.0.0 next goal: containers (dependency of hoodle-0.1) rejecting: containers-0.5.5.1/installed-23e..., 0.5.6.3, 0.5.6.2, 0.5.6.1, 0.5.6.0, 0.5.5.1, 0.5.5.0, 0.5.4.0, 0.5.3.1, 0.5.3.0, 0.5.2.1, 0.5.2.0, 0.5.1.0, 0.5.0.0 (conflict: hoodle => containers==0.4.*) rejecting: containers-0.4.2.1, 0.4.2.0, 0.4.1.0, 0.4.0.0 (conflict: template-haskell => containers==0.5.*) rejecting: containers-0.3.0.0, 0.2.0.1, 0.2.0.0, 0.1.0.1, 0.1.0.0 (conflict: hoodle => containers==0.4.*) Backjump limit reached (change with --max-backjumps).