{ fetchurl }:

fetchurl {
  url = "https://github.com/commercialhaskell/all-cabal-hashes/archive/711b59b900ee0b267ebb86e41dbc83ad7fb69629.tar.gz";
  sha256 = "0vfg5pilhqi59826iciz15bmylhfdlxmmkps7samzbilsf21j0sy";
}