anchor.diff:      diff-hl = callPackage ({ cl-lib ? null, elpaBuild, fetchurl, lib }:
       elpaBuild {
           pname = "diff-hl";
  -        version = "1.8.3";
  -        src = fetchurl {
  -          url = "https://elpa.gnu.org/packages/diff-hl-1.8.3.tar";
  -          sha256 = "1i3ngx5gmjl1a15y6d0xmcgdimn7ghrqkbzqisz4ra3dgwbbb3f9";
  +        version = "1.8.4";
  +        src = fetchurl {
  +          url = "https://elpa.gnu.org/packages/diff-hl-1.8.4.tar";
  +          sha256 = "0axhidc3cym7a2x4rpxf4745qss9s9ajyg4s9h5b4zn7v7fyp71n";
           };
           packageRequires = [ cl-lib ];
           meta = {
  
positive.code:       }) {};
      org = callPackage ({ elpaBuild, fetchurl, lib }: elpaBuild {
          pname = "org";
          version = "20160516";
          src = fetchurl {
            url = "https://elpa.gnu.org/packages/org-20160516.tar";
            sha256 = "164v1zddgyfy9v1qhl1fqz2vcgm5w4dhfmra5ngpgnjh1402l0pm";
          };
          packageRequires = [];
          meta = {
  
negative.code:       }) {};
      auctex = callPackage ({ elpaBuild, fetchurl, lib }: elpaBuild {
          pname = "auctex";
          version = "11.89.4";
          src = fetchurl {
            url = "https://elpa.gnu.org/packages/auctex-11.89.4.tar";
            sha256 = "06dxj9wflwgzy88vk47pdk6xln4f63cab7s73ynwp2bdqjs99f5b";
          };
          packageRequires = [];
          meta = {
  