anchor.diff:            license = lib.licenses.free;
           };
         }) {};
  -    ggtags = callPackage ({ cl-lib ? null, elpaBuild, emacs, fetchurl, lib }:
  +    ggtags = callPackage ({ elpaBuild, emacs, fetchurl, lib }:
         elpaBuild {
           pname = "ggtags";
           ename = "ggtags";
  -        version = "0.8.13";
  -        src = fetchurl {
  -          url = "https://elpa.gnu.org/packages/ggtags-0.8.13.el";
  -          sha256 = "1qa7lcrcmf76sf6dy8sxbg4adq7rg59fm0n5848w3qxgsr0h45fg";
  -        };
  -        packageRequires = [ cl-lib emacs ];
  +        version = "0.9.0";
  +        src = fetchurl {
  +          url = "https://elpa.gnu.org/packages/ggtags-0.9.0.tar";
  +          sha256 = "0p79x9g94jynl83ndvqp9349vhgkzxzhnc517r8hn44iqxqf6ghg";
  +        };
  +        packageRequires = [ emacs ];
           meta = {
             homepage = "https://elpa.gnu.org/packages/ggtags.html";
             license = lib.licenses.free;
  
positive.code:           license = lib.licenses.free;
          };
        }) {};
      org = callPackage ({ elpaBuild, fetchurl, lib }:
        elpaBuild {
          pname = "org";
          ename = "org";
          version = "9.4.4";
          src = fetchurl {
            url = "https://elpa.gnu.org/packages/org-9.4.4.tar";
            sha256 = "05ma8n6hr10323d85ay8ai0xrpc9q2m93n8avqh7j9fmmb3bhr0b";
          };
          packageRequires = [];
          meta = {
            homepage = "https://elpa.gnu.org/packages/org.html";
            license = lib.licenses.free;
  
negative.code:           license = lib.licenses.free;
          };
        }) {};
      aggressive-completion = callPackage ({ elpaBuild, emacs, fetchurl, lib }:
        elpaBuild {
          pname = "aggressive-completion";
          ename = "aggressive-completion";
          version = "1.5";
          src = fetchurl {
            url = "https://elpa.gnu.org/packages/aggressive-completion-1.5.tar";
            sha256 = "1gy0q5yc1a0w31qpyb92f672zcfgxbp5s104ycgk11jxk4y17nw9";
          };
          packageRequires = [ emacs ];
          meta = {
            homepage = "https://elpa.gnu.org/packages/aggressive-completion.html";
            license = lib.licenses.free;
          };
        }) {};
      aggressive-indent = callPackage ({ cl-lib ? null
                                       , elpaBuild
                                       , emacs
  