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with import <nixpkgs> { };

{
  hello = stdenv.mkDerivation {
    name = "hello-2.1.1";
    builder = ./builder.sh;
    src = fetchurl {
      url = "ftp://ftp.nluug.nl/pub/gnu/hello/hello-2.1.1.tar.gz";
      sha256 = "c510e3ad0200517e3a14534e494b37dc0770efd733fc35ce2f445dd49c96a7d5";
    };
    inherit perl;
  };
}