anchor.diff:      ztree = callPackage ({ cl-lib ? null, elpaBuild, fetchurl, lib }:
       elpaBuild {
           pname = "ztree";
  -        version = "1.0.3";
  -        src = fetchurl {
  -          url = "https://elpa.gnu.org/packages/ztree-1.0.3.tar";
  -          sha256 = "1mwzk48sah4w5jmlmzqxnwhnlnc2mf25ayhgymv24sv8c6hdllsw";
  +        version = "1.0.4";
  +        src = fetchurl {
  +          url = "https://elpa.gnu.org/packages/ztree-1.0.4.tar";
  +          sha256 = "0xiiaa660s8z7901siwvmqkqz30agfzsy3zcyry2r017m3ghqjph";
           };
           packageRequires = [ cl-lib ];
           meta = {
  
positive.code:     debbugs = callPackage ({ cl-lib ? null, elpaBuild, fetchurl, lib, soap-client }:
      elpaBuild {
          pname = "debbugs";
          version = "0.10";
          src = fetchurl {
            url = "https://elpa.gnu.org/packages/debbugs-0.10.tar";
            sha256 = "0vrsa70h6ipsq01qr9qzlaw1704xqviby321ri6w69wkwlcjkpin";
          };
          packageRequires = [ cl-lib soap-client ];
          meta = {
  
negative.code:     ggtags = callPackage ({ cl-lib ? null, elpaBuild, emacs, fetchurl, lib }:
      elpaBuild {
          pname = "ggtags";
          version = "0.8.12";
          src = fetchurl {
            url = "https://elpa.gnu.org/packages/ggtags-0.8.12.el";
            sha256 = "0ny3llk021g6r0s75xdm4hzpbxv393ddm2r6f2xdk8kqnq4gnirp";
          };
          packageRequires = [ cl-lib emacs ];
          meta = {
  