Resolving dependencies... cabal: Could not resolve dependencies: next goal: ethereum-client-haskell (user goal) rejecting: ethereum-client-haskell-0.0.4 (constraint from user target requires ==0.0.3) trying: ethereum-client-haskell-0.0.3 trying: base-4.9.0.0/installed-4.9... (dependency of ethereum-client-haskell-0.0.3) trying: process-1.4.2.0/installed-1.4... (dependency of cmdargs-0.10.14) next goal: haskoin (dependency of ethereum-client-haskell-0.0.3) rejecting: haskoin-0.1.0.2, haskoin-0.1.0.1, haskoin-0.1.0 (conflict: process => deepseq==1.4.2.0/installed-1.4..., haskoin => deepseq>=1.3 && <1.4) rejecting: haskoin-0.0.2.1, haskoin-0.0.2 (conflict: base==4.9.0.0/installed-4.9..., haskoin => base>=4.6 && <4.7) Dependency tree exhaustively searched.