nixpkgs/pkgs/tools/archivers/cpio/default.nix

{stdenv, fetchurl}:

stdenv.mkDerivation {
  name = "cpio-2.6";
  src = fetchurl {
    url = http://nix.cs.uu.nl/dist/tarballs/cpio-2.6.tar.bz2;
    md5 = "25e0e8725bc60ed3460c9cde92752674";
  };
}