Resolving dependencies... Error: cabal: Could not resolve dependencies: [__0] trying: stackctl-1.4.2.1 (user goal) [__1] unknown package: amazonka-sso (dependency of stackctl) [__1] fail (backjumping, conflict set: amazonka-sso, stackctl) After searching the rest of the dependency tree exhaustively, these were the goals I've had most trouble fulfilling: stackctl, amazonka-sso