{ fetchurl }:

fetchurl {
  url = "https://github.com/commercialhaskell/all-cabal-hashes/archive/7882a52a634fbc2da03adc9616aa83b27b06d7a2.tar.gz";
  sha256 = "1gw480w1d1117l8hbp7rh1jmjjqx11pzb3995m5wi2q9mvi645x2";
}