{stdenv, fetchurl, coreutils ? null}: stdenv.mkDerivation { name = "diffutils-2.8.1"; src = fetchurl { url = http://nix.cs.uu.nl/dist/tarballs/diffutils-2.8.1.tar.gz; md5 = "71f9c5ae19b60608f6c7f162da86a428"; }; /* If no explicit coreutils is given, use the one from stdenv. */ buildInputs = [coreutils]; }