Resolving dependencies... cabal: Could not resolve dependencies: [__0] trying: fei-examples-1.0.0 (user goal) [__1] trying: store-0.7.9 (dependency of fei-examples) [__2] trying: vector-0.12.1.2 (dependency of store) [__3] trying: fei-datasets-1.0.0 (dependency of fei-examples) [__4] trying: hip-1.5.6.0 (dependency of fei-datasets) [__5] trying: hip:-disable-chart [__6] trying: Chart-diagrams-1.9.3 (dependency of hip -disable-chart) [__7] trying: svg-builder-0.1.1 (dependency of Chart-diagrams) [__8] next goal: base (dependency of fei-examples) [__8] rejecting: base-4.14.1.0/installed-4.14.1.0 (conflict: svg-builder => base>=4.5 && <4.14) [__8] skipping: base-4.14.1.0, base-4.14.0.0 (has the same characteristics that caused the previous version to fail: excluded by constraint '>=4.5 && <4.14' from 'svg-builder') [__8] rejecting: base-4.13.0.0, base-4.12.0.0, base-4.11.1.0, base-4.11.0.0, base-4.10.1.0, base-4.10.0.0, base-4.9.1.0, base-4.9.0.0, base-4.8.2.0, base-4.8.1.0, base-4.8.0.0, base-4.7.0.2, base-4.7.0.1, base-4.7.0.0, base-4.6.0.1, base-4.6.0.0, base-4.5.1.0, base-4.5.0.0, base-4.4.1.0, base-4.4.0.0, base-4.3.1.0, base-4.3.0.0, base-4.2.0.2, base-4.2.0.1, base-4.2.0.0, base-4.1.0.0, base-4.0.0.0, base-3.0.3.2, base-3.0.3.1 (constraint from non-upgradeable package requires installed instance) [__8] fail (backjumping, conflict set: base, fei-examples, svg-builder) After searching the rest of the dependency tree exhaustively, these were the goals I've had most trouble fulfilling: Chart-diagrams, base, hip, svg-builder, hip:disable-chart, lucid-svg, vector, store, fei-examples, fei-datasets Try running with --minimize-conflict-set to improve the error message.