Resolving dependencies... cabal: Could not resolve dependencies: trying: binary-0.8.3.0/installed-0.8... (dependency of text-1.2.2.1) trying: mtl-2.2.1 (dependency of moe-2015.5.4) trying: hack-handler-hyena-2010.3.15 (dependency of maid-2010.9.9) next goal: hyena (dependency of hack-handler-hyena-2010.3.15) rejecting: hyena-0.1.0.1 (conflict: binary => containers==0.5.7.1/installed-0.5..., hyena => containers>=0.3 && <0.4) rejecting: hyena-0.1 (conflict: mtl==2.2.1, hyena => mtl>=1 && <1.2) Backjump limit reached (currently 2000, change with --max-backjumps or try to run with --reorder-goals).