anchor.diff:        }) {};
       auctex = callPackage ({ elpaBuild, fetchurl, lib }: elpaBuild {
           pname = "auctex";
  -        version = "11.89.8";
  -        src = fetchurl {
  -          url = "https://elpa.gnu.org/packages/auctex-11.89.8.tar";
  -          sha256 = "0rilldzb7sm7k22vfifdsnxz1an94jnn1bn8gfmqkac4g9cskl46";
  +        version = "11.90.0";
  +        src = fetchurl {
  +          url = "https://elpa.gnu.org/packages/auctex-11.90.0.tar";
  +          sha256 = "04nsndwcf0dimgc2p1yzzrymc36amzdnjg0158nxplmjkzdp28gy";
           };
           packageRequires = [];
           meta = {
  
positive.code:       }) {};
      cl-lib = callPackage ({ elpaBuild, fetchurl, lib }: elpaBuild {
          pname = "cl-lib";
          version = "0.5";
          src = fetchurl {
            url = "https://elpa.gnu.org/packages/cl-lib-0.5.el";
            sha256 = "1z4ffcx7b95bxz52586lhvdrdm5vp473g3afky9h5my3jp5cd994";
          };
          packageRequires = [];
          meta = {
  
negative.code:     ztree = callPackage ({ cl-lib ? null, elpaBuild, fetchurl, lib }:
      elpaBuild {
          pname = "ztree";
          version = "1.0.5";
          src = fetchurl {
            url = "https://elpa.gnu.org/packages/ztree-1.0.5.tar";
            sha256 = "14pbbsyav1dzz8m8waqdcmcx9bhw5g8m2kh1ahpxc3i2lfhdan1x";
          };
          packageRequires = [ cl-lib ];
          meta = {
  