anchor.diff:      sml-mode = callPackage ({ cl-lib ? null, elpaBuild, emacs, fetchurl, lib }:
       elpaBuild {
           pname = "sml-mode";
  -        version = "6.7";
  -        src = fetchurl {
  -          url = "https://elpa.gnu.org/packages/sml-mode-6.7.el";
  -          sha256 = "041dmxx7imiy99si9pscwjh5y4h02y3lirzhv1cfxqr3ghxngf9x";
  +        version = "6.8";
  +        src = fetchurl {
  +          url = "https://elpa.gnu.org/packages/sml-mode-6.8.el";
  +          sha256 = "105fcrz5qp95f2n3fdm3awr6z58sbrjihjss6qnrg4lz2ggbc328";
           };
           packageRequires = [ cl-lib emacs ];
           meta = {
  
positive.code:       }) {};
      auctex = callPackage ({ elpaBuild, fetchurl, lib }: elpaBuild {
          pname = "auctex";
          version = "11.92.0";
          src = fetchurl {
            url = "https://elpa.gnu.org/packages/auctex-11.92.0.tar";
            sha256 = "147xfb64jxpl4262xrn4cxm6h86ybgr3aa1qq6vs6isnqczh7491";
          };
          packageRequires = [];
          meta = {
  
negative.code:     gnorb = callPackage ({ cl-lib ? null, elpaBuild, fetchurl, lib }:
      elpaBuild {
          pname = "gnorb";
          version = "1.4.2";
          src = fetchurl {
            url = "https://elpa.gnu.org/packages/gnorb-1.4.2.tar";
            sha256 = "1892j8gdbcny6b9psxa1lwxsb1gkj9z9z00rfc62kdw8bffmx38y";
          };
          packageRequires = [ cl-lib ];
          meta = {
  