{ ... }:
finalPkgs: previousPkgs: {
  haskell =
    with previousPkgs.haskell.lib;
    previousPkgs.haskell
    // {
      packages = previousPkgs.haskell.packages // {
        ghc865 = previousPkgs.haskell.packages.ghc865.extend (
          _hself: hsuper: {
            docopt = unmarkBroken hsuper.docopt;
            zerobin = justStaticExecutables (unmarkBroken hsuper.zerobin);
          }
        );
      };
    };
}