Resolving dependencies... cabal: Could not resolve dependencies: next goal: postgrest (user goal) rejecting: postgrest-0.3.2.0, postgrest-0.3.1.1, postgrest-0.3.1.0, postgrest-0.3.0.4, postgrest-0.3.0.3, postgrest-0.3.0.2, postgrest-0.3.0.1, postgrest-0.3.0.0, postgrest-0.2.12.1 (constraint from user target requires ==0.2.12.0) trying: postgrest-0.2.12.0 trying: aeson-1.0.2.1 (dependency of postgrest-0.2.12.0) next goal: hasql-postgres (dependency of postgrest-0.2.12.0) rejecting: hasql-postgres-0.10.6 (conflict: aeson==1.0.2.1, hasql-postgres => aeson>=0.7 && <0.11) rejecting: hasql-postgres-0.10.5 (conflict: aeson==1.0.2.1, hasql-postgres => aeson>=0.7 && <0.10) rejecting: hasql-postgres-0.10.4.0 (conflict: aeson==1.0.2.1, hasql-postgres => aeson>=0.7 && <0.11) rejecting: hasql-postgres-0.10.3.3, hasql-postgres-0.10.3.2, hasql-postgres-0.10.3.1, hasql-postgres-0.10.3, hasql-postgres-0.10.2, hasql-postgres-0.10.1, hasql-postgres-0.10.0, hasql-postgres-0.9.1, hasql-postgres-0.9.0, hasql-postgres-0.8.0, hasql-postgres-0.7.3, hasql-postgres-0.7.2, hasql-postgres-0.7.1, hasql-postgres-0.7.0, hasql-postgres-0.6.1, hasql-postgres-0.6.0, hasql-postgres-0.5.1, hasql-postgres-0.5.0, hasql-postgres-0.4.0, hasql-postgres-0.3.3, hasql-postgres-0.3.2, hasql-postgres-0.3.1, hasql-postgres-0.3.0, hasql-postgres-0.2.0, hasql-postgres-0.1.3, hasql-postgres-0.1.2, hasql-postgres-0.1.1, hasql-postgres-0.1.0 (conflict: postgrest => hasql-postgres>=0.10.4 && <0.11) Backjump limit reached (currently 2000, change with --max-backjumps or try to run with --reorder-goals).