Resolving dependencies... cabal: Could not resolve dependencies: next goal: Nomyx (user goal) rejecting: Nomyx-0.7.6, 0.7.5, 0.7.4, 0.7.3, 0.7.2, 0.7.1, 0.7.0, 0.6.2, 0.6.1, 0.6.0, 0.5.0, 0.4.1, 0.4.0, 0.3.2, 0.3.1, 0.3.0, 0.2.3, 0.2.2 (global constraint requires ==0.2.1) trying: Nomyx-0.2.1 trying: mtl-2.2.1 (dependency of Nomyx-0.2.1) next goal: hint-server (dependency of Nomyx-0.2.1) rejecting: hint-server-1.4.0, 1.3.2, 1.3.1, 1.3.0 (conflict: mtl==2.2.1, hint-server => mtl==2.1.*) rejecting: hint-server-1.2.2 (conflict: mtl==2.2.1, hint-server => mtl<2.2) rejecting: hint-server-1.2.1 (conflict: mtl==2.2.1, hint-server => mtl<2.1) rejecting: hint-server-1.2.0, 1.1.0, 1.0.0 (conflict: mtl==2.2.1, hint-server => mtl<1.2) Backjump limit reached (change with --max-backjumps).