{ fetchurl }:

fetchurl {
  url = "https://github.com/commercialhaskell/all-cabal-hashes/archive/532d9c821a36f220c928be40465a6ace52bc3818.tar.gz";
  sha256 = "1yqn87r75cdf45wkbfa5vqxvsaxqsmypwjl4pw5w1g8qfrdilr18";
}