# Pastebin uSuQYJHD
{
  allowUnfree = true;
  packageOverrides = super: let self = super.pkgs; in with self; rec {
      myHaskellPackages = libProf: self: super: rec {

        time = super.callHackage "time" "1.6.0.1" {};

        mkDerivation = pkg: super.mkDerivation (pkg // {
          enableLibraryProfiling = libProf;
          enableExecutableProfiling = false;
        });
      };

		haskell843Packages = super.haskell.packages.ghc843.override {
      overrides = myHaskellPackages false;
    };

    haskellPackages = haskell843Packages;


    myPackages = super.myEnvFun {
      name = "my-packages";
      buildInputs = with haskellPackages; [
        hackage-server
      ];
    };
  };
}