Resolving dependencies... cabal: Could not resolve dependencies: [__0] trying: BiobaseXNA-0.11.1.0 (user goal) [__1] trying: PrimitiveArray-0.10.1.0 (dependency of BiobaseXNA) [__2] next goal: BiobaseTypes (dependency of BiobaseXNA) [__2] rejecting: BiobaseTypes-0.2.0.1 (conflict: PrimitiveArray==0.10.1.0, BiobaseTypes => PrimitiveArray==0.9.1.*) [__2] skipping: BiobaseTypes-0.2.0.0, BiobaseTypes-0.1.4.0, BiobaseTypes-0.1.3.0, BiobaseTypes-0.1.2.1, BiobaseTypes-0.1.2.0, BiobaseTypes-0.1.1.1, BiobaseTypes-0.1.1.0 (has the same characteristics that caused the previous version to fail: excludes 'PrimitiveArray' version 0.10.1.0) [__2] rejecting: BiobaseTypes-0.0.2.2 (conflict: BiobaseXNA => BiobaseTypes==0.2.0.*) [__2] skipping: BiobaseTypes-0.0.2.1 (has the same characteristics that caused the previous version to fail: excluded by constraint '==0.2.0.*' from 'BiobaseXNA') [__2] fail (backjumping, conflict set: BiobaseTypes, BiobaseXNA, PrimitiveArray) After searching the rest of the dependency tree exhaustively, these were the goals I've had most trouble fulfilling: BiobaseXNA, PrimitiveArray, BiobaseTypes