Resolving dependencies... cabal: Could not resolve dependencies: next goal: angel (user goal) rejecting: angel-0.6.2, angel-0.6.1, angel-0.6.0, angel-0.5.2, angel-0.5.1, angel-0.5.0 (constraint from user target requires ==0.4.4) trying: angel-0.4.4 trying: base-4.9.0.0/installed-4.9... (dependency of angel-0.4.4) trying: directory-1.2.6.2/installed-1.2... (dependency of configurator-0.3.0.0) next goal: process (dependency of angel-0.4.4) rejecting: process-1.4.2.0/installed-1.4..., process-1.4.2.0, process-1.4.1.0, process-1.4.0.0, process-1.3.0.0, process-1.2.3.0, process-1.2.2.0, process-1.2.1.0, process-1.2.0.0 (conflict: angel => process>=1.0 && <1.2) rejecting: process-1.1.0.2 (conflict: directory => filepath==1.4.1.0/installed-1.4..., process => filepath>=1.1 && <1.4) rejecting: process-1.1.0.1, process-1.1.0.0, process-1.0.1.5, process-1.0.1.4 (conflict: directory==1.2.6.2/installed-1.2..., process => directory>=1.0 && <1.2) rejecting: process-1.0.1.3, process-1.0.1.2, process-1.0.1.1 (conflict: directory==1.2.6.2/installed-1.2..., process => directory>=1.0 && <1.1) rejecting: process-1.0.0.0 (conflict: base==4.9.0.0/installed-4.9..., process => base<4.3) Backjump limit reached (currently 2000, change with --max-backjumps or try to run with --reorder-goals).