Resolving dependencies... Error: cabal: Could not resolve dependencies: [__0] trying: sandwich-contexts-minio-0.1.0.1 (user goal) [__1] trying: unliftio-0.2.25.1 (dependency of sandwich-contexts-minio) [__2] trying: async-2.2.5 (dependency of unliftio) [__3] trying: sandwich-contexts-0.3.0.3 (dependency of sandwich-contexts-minio) [__4] trying: crypton-connection-0.4.5 (dependency of sandwich-contexts) [__5] trying: tls-2.1.11 (dependency of crypton-connection) [__6] trying: network-3.2.8.0 (dependency of sandwich-contexts-minio) [__7] trying: minio-hs-1.7.0 (dependency of sandwich-contexts-minio) [__8] next goal: connection (dependency of minio-hs) [__8] rejecting: connection-0.3.1 (conflict: tls==2.1.11, connection => tls>=1.4 && <1.7) [__8] skipping: connection-0.3.0 (has the same characteristics that caused the previous version to fail: excludes 'tls' version 2.1.11) [__8] rejecting: connection-0.2.8 (conflict: network==3.2.8.0, connection => network>=2.3 && <2.9) [__8] skipping: connection-0.2.7, connection-0.2.6, connection-0.2.5, connection-0.2.4, connection-0.2.3, connection-0.2.2, connection-0.2.1, connection-0.2.0, connection-0.1.3.1, connection-0.1.3, connection-0.1.2, connection-0.1.1, connection-0.1.0 (has the same characteristics that caused the previous version to fail: excludes 'network' version 3.2.8.0) [__8] fail (backjumping, conflict set: connection, minio-hs, network, tls) After searching the rest of the dependency tree exhaustively, these were the goals I've had most trouble fulfilling: network, base, tls, protolude, minio-hs, connection, text-format, sandwich-contexts-minio, integer-gmp, crypton-connection, sandwich-contexts, async, unliftio Try running with --minimize-conflict-set to improve the error message.