monad-control.nix

with (import <nixpkgs> {}).pkgs;
let monad-control = pkgs.haskellngPackages.callPackage ./monad-control-0.3.nix {};
    pkg = haskellngPackages.callPackage
            ({ mkDerivation, base, monad-control, stdenv, yesod }:
             mkDerivation {
               pname = "yesod-nix";
               version = "0.1.0.0";
               src = ./.;
               isLibrary = false;
               isExecutable = true;
               buildDepends = [ base monad-control yesod ];
               license = stdenv.lib.licenses.unfree;
             }) { monad-control = monad-control; };
in
  pkg.env