{ fetchurl }:

fetchurl {
  url = "https://github.com/commercialhaskell/all-cabal-hashes/archive/95366a34cd5c9b47444ac819562fff2f23d7d753.tar.gz";
  sha256 = "184qrgb7jl1s79v4z1jz9ywihilf60jh93xhwf0n75vnxb4ibnfd";
}