anchor.diff:      js2-mode = callPackage ({ cl-lib ? null, elpaBuild, emacs, fetchurl, lib }:
       elpaBuild {
           pname = "js2-mode";
  -        version = "20170116";
  -        src = fetchurl {
  -          url = "https://elpa.gnu.org/packages/js2-mode-20170116.tar";
  -          sha256 = "1z4k7710yz1fbm2w8m17q81yyp8sxllld0zmgfnc336iqrc07hmk";
  +        version = "20170721";
  +        src = fetchurl {
  +          url = "https://elpa.gnu.org/packages/js2-mode-20170721.tar";
  +          sha256 = "02w2hgk8qbmwkksqf1dmslpr3xn9zjp3srl3qh8730w8r8s8czni";
           };
           packageRequires = [ cl-lib emacs ];
           meta = {
  
positive.code:     hydra = callPackage ({ cl-lib ? null, elpaBuild, fetchurl, lib }:
      elpaBuild {
          pname = "hydra";
          version = "0.13.5";
          src = fetchurl {
            url = "https://elpa.gnu.org/packages/hydra-0.13.5.tar";
            sha256 = "0vq1pjyq6ddbikbh0vzdigbs0zlldgwad0192s7v9npg8qlwi668";
          };
          packageRequires = [ cl-lib ];
          meta = {
  
negative.code:       }) {};
      org = callPackage ({ elpaBuild, fetchurl, lib }: elpaBuild {
          pname = "org";
          version = "20170724";
          src = fetchurl {
            url = "https://elpa.gnu.org/packages/org-20170724.tar";
            sha256 = "1f1szds6642427hrzagxgkr05z66sf57n5l2acvmpgw4z358ms0n";
          };
          packageRequires = [];
          meta = {
  