Resolving dependencies... cabal: Could not resolve dependencies: [__0] next goal: libsecp256k1 (user goal) [__0] rejecting: libsecp256k1-0.0.1 (conflict: pkg-config package libsecp256k1-any, not found in the pkg-config database) [__0] rejecting: libsecp256k1-0.0.0 (constraint from user target requires ==0.0.1) [__0] fail (backjumping, conflict set: libsecp256k1) After searching the rest of the dependency tree exhaustively, these were the goals I've had most trouble fulfilling: libsecp256k1