Resolving dependencies... cabal: Could not resolve dependencies: [__0] trying: bitcoind-rpc-0.2.0.0 (user goal) [__1] trying: text-1.2.3.2/installed-1.2.3.2 (dependency of bitcoind-rpc) [__2] next goal: haskoin-core (dependency of bitcoind-rpc) [__2] rejecting: haskoin-core-0.17.0 (conflict: text==1.2.3.2/installed-1.2.3.2, haskoin-core => text>=1.2.4.0) [__2] skipping: haskoin-core-0.15.0, haskoin-core-0.14.1, haskoin-core-0.14.0, haskoin-core-0.13.6, haskoin-core-0.13.5, haskoin-core-0.13.4, haskoin-core-0.13.3, haskoin-core-0.13.2, haskoin-core-0.13.1, haskoin-core-0.13.0 (has the same characteristics that caused the previous version to fail: excludes 'text' version 1.2.3.2) [__2] rejecting: haskoin-core-0.12.0 (conflict: bitcoind-rpc => haskoin-core>=0.13.5 && <0.18) [__2] skipping: haskoin-core-0.10.1, haskoin-core-0.10.0, haskoin-core-0.9.8, haskoin-core-0.9.7, haskoin-core-0.9.6, haskoin-core-0.9.5, haskoin-core-0.9.4, haskoin-core-0.9.3, haskoin-core-0.9.2, haskoin-core-0.9.1, haskoin-core-0.9.0, haskoin-core-0.8.4, haskoin-core-0.8.3, haskoin-core-0.8.2, haskoin-core-0.8.1, haskoin-core-0.8.0, haskoin-core-0.7.0, haskoin-core-0.6.1, haskoin-core-0.6.0, haskoin-core-0.5.2, haskoin-core-0.5.1, haskoin-core-0.5.0, haskoin-core-0.4.2, haskoin-core-0.4.1, haskoin-core-0.4.0, haskoin-core-0.3.1, haskoin-core-0.3.0, haskoin-core-0.2.0 (has the same characteristics that caused the previous version to fail: excluded by constraint '>=0.13.5 && <0.18' from 'bitcoind-rpc') [__2] fail (backjumping, conflict set: bitcoind-rpc, haskoin-core, text) After searching the rest of the dependency tree exhaustively, these were the goals I've had most trouble fulfilling: haskoin-core, bitcoind-rpc, text, base Try running with --minimize-conflict-set to improve the error message.