{pkgs ? import <nixpkgs> {}}:
pkgs.mkShell rec {
  name = "haddock2";

  packages = with pkgs; [
    cabal-install
    haskell.packages.ghc912.ghc
    haskellPackages.cabal-fmt
    zlib
  ];

  env.LD_LIBRARY_PATH = pkgs.lib.makeLibraryPath packages;
}