Resolving dependencies... cabal: Could not resolve dependencies: [__0] trying: json-query-0.2.0.0 (user goal) [__1] next goal: contiguous (dependency of json-query) [__1] rejecting: contiguous-0.6.0 (conflict: json-query => contiguous>=0.6.1) [__1] skipping: contiguous-0.5.2, contiguous-0.5.1, contiguous-0.5, contiguous-0.4.0.1, contiguous-0.4, contiguous-0.3.3.0, contiguous-0.3.2.0, contiguous-0.3.1.0, contiguous-0.3.0.0, contiguous-0.2.0.0, contiguous-0.1.0.0 (has the same characteristics that caused the previous version to fail: excluded by constraint '>=0.6.1' from 'json-query') [__1] fail (backjumping, conflict set: contiguous, json-query) After searching the rest of the dependency tree exhaustively, these were the goals I've had most trouble fulfilling: json-query, contiguous