with import <nixpkgs> {};
(haskellPackages.override {
  overrides = (self: super: {
    inherit (pkgs.callPackage ./nix-lib/yarn-lock.nix {} self super)
      yarn-lock;

    my-pkg = let
      buildDepends = with self; [
        protolude
        yarn-lock
        hnix
        hpack
        aeson
        async-pool
        ansi-wl-pprint
        regex-tdfa
        regex-tdfa-text
        neat-interpolation
        tasty-th
        tasty-quickcheck
        tasty-hunit
        http-client-tls
        monad-par
      ];
      in super.mkDerivation {
        pname = "pkg-env";
        src = "/dev/null";
        version = "none";
        license = "none";
        inherit buildDepends;
        buildTools = with self; [
          ghcid
          cabal-install
          (hoogleLocal {
            packages = buildDepends;
          })
        ];
      };
    });
}).my-pkg.env