{ fetchurl }:

fetchurl {
  url = "https://github.com/commercialhaskell/all-cabal-hashes/archive/93bcfb09798da885d29304fa4dab1e234e3b728e.tar.gz";
  sha256 = "1mv5kxqldakapzbmch2b88mynng268njq3dxbkmyzli8fwnllra2";
}