anchor.diff:        }) {};
       auctex = callPackage ({ elpaBuild, fetchurl, lib }: elpaBuild {
           pname = "auctex";
  -        version = "11.89.6";
  -        src = fetchurl {
  -          url = "https://elpa.gnu.org/packages/auctex-11.89.6.tar";
  -          sha256 = "1lfaki8s9ri6ds88mhpxwqb2jrjf7hbs1w3nxhg307344lac07gy";
  +        version = "11.89.7";
  +        src = fetchurl {
  +          url = "https://elpa.gnu.org/packages/auctex-11.89.7.tar";
  +          sha256 = "03sxdh6dv4m98yq09hxcph2lgidai8ky22i9acjcp6vfjlsb9mlf";
           };
           packageRequires = [];
           meta = {
  
positive.code:       }) {};
      org = callPackage ({ elpaBuild, fetchurl, lib }: elpaBuild {
          pname = "org";
          version = "20161102";
          src = fetchurl {
            url = "https://elpa.gnu.org/packages/org-20161102.tar";
            sha256 = "12v9jhakdxcmlw9zrcrh1fwi3kh6z0qva90hpnr0zjqyj72i0wir";
          };
          packageRequires = [];
          meta = {
  
negative.code:     xelb = callPackage ({ cl-generic, elpaBuild, emacs, fetchurl, lib }:
      elpaBuild {
          pname = "xelb";
          version = "0.12";
          src = fetchurl {
            url = "https://elpa.gnu.org/packages/xelb-0.12.tar";
            sha256 = "0i9n0f3ibj4a5pwcsvwrah9m0fz32m0x6a9wsmjn3li20v8pcb81";
          };
          packageRequires = [ cl-generic emacs ];
          meta = {
  