args:
args.stdenv.mkDerivation {
  name = "bfr-1.6";

  src = args.fetchurl {
    url = http://www.glines.org/bin/pk/bfr-1.6.tar.bz2;
    sha256 = "0fadfssvj9klj4dq9wdrzys1k2a1z2j0p6kgnfgbjv0n1bq6h4cy";
  };

  buildInputs =(with args; [perl]);

  meta = {
      description = "general-purpose command-line pipe buffer";
      homepage = http://www.glines.org/wiki/bfr;
      license = "GPL2";
  };
}