Resolving dependencies... cabal: Could not resolve dependencies: next goal: persistent-odbc (user goal) rejecting: persistent-odbc-0.2.0.1, 0.2.0.0, 0.1.2.2, 0.1.2.1 (global constraint requires ==0.1.2.0) trying: persistent-odbc-0.1.2.0 next goal: persistent (dependency of persistent-odbc-0.1.2.0) rejecting: persistent-2.2.1, 2.2, 2.1.6, 2.1.5, 2.1.4, 2.1.3, 2.1.2, 2.1.1.7, 2.1.1.6, 2.1.1.5, 2.1.1.4, 2.1.1.3, 2.1.1.2, 2.1.1.1, 2.1.1, 2.1.0.2, 2.1.0.1, 2.1 (conflict: persistent-odbc => persistent>=1.2 && <1.4) rejecting: persistent-1.3.3, 1.3.2, 1.3.1.1, 1.3.1, 1.3.0.6, 1.3.0.5, 1.3.0.4 (conflict: base==4.8.1.0/installed-4f7..., persistent => base>=4.5 && <4.8) trying: persistent-1.3.0.3 trying: transformers-base-0.4.4 (dependency of persistent-1.3.0.3) trying: transformers-compat-0.4.0.4 (dependency of transformers-base-0.4.4) trying: transformers-compat-0.4.0.4:-two trying: transformers-compat-0.4.0.4:-three next goal: resourcet (dependency of persistent-odbc-0.1.2.0) rejecting: resourcet-1.1.6, 1.1.5, 1.1.4.1, 1.1.4, 1.1.3.3, 1.1.3.2, 1.1.3.1, 1.1.3, 1.1.2.3, 1.1.2.2, 1.1.2.1, 1.1.2, 1.1.1, 1.1.0.1, 1.1.0 (conflict: persistent => resourcet>=0.4 && <1.1) trying: resourcet-0.4.10.2 next goal: transformers (dependency of persistent-odbc-0.1.2.0) rejecting: transformers-0.4.2.0/installed-21d..., 0.4.3.0, 0.4.2.0, 0.4.1.0 (conflict: resourcet => transformers>=0.2.2 && <0.4) rejecting: transformers-0.3.0.0 (conflict: transformers-compat-0.4.0.4:three => transformers>=0.4.1 && <0.5) rejecting: transformers-0.2.2.1, 0.2.2.0, 0.2.1.0, 0.2.0.0, 0.1.4.0, 0.1.3.0, 0.1.1.0, 0.1.0.1, 0.1.0.0, 0.0.1.0, 0.0.0.0 (conflict: persistent-odbc => transformers>=0.3) rejecting: transformers-0.4.0.0 (conflict: transformers-compat-0.4.0.4:three => transformers>=0.4.1 && <0.5) Backjump limit reached (change with --max-backjumps).