{ fetchurl }:
fetchurl {
url = "https://github.com/commercialhaskell/all-cabal-hashes/archive/92b4fe519b988dee70e2ef8f2f1d05edf610ba8a.tar.gz";
sha256 = "15sh85v57k635q5ir8pwa605cchj12h4sflss8zd1xshy7ywi673";
}