anchor.diff:            license = lib.licenses.free;
           };
         }) {};
  -    temp-buffer-browse = callPackage ({ elpaBuild, fetchurl, lib }: elpaBuild {
  +    temp-buffer-browse = callPackage ({ elpaBuild, emacs, fetchurl, lib }:
  +    elpaBuild {
           pname = "temp-buffer-browse";
  -        version = "1.4";
  -        src = fetchurl {
  -          url = "https://elpa.gnu.org/packages/temp-buffer-browse-1.4.el";
  -          sha256 = "055z7hm8b2s8z1kd6hahjz0crz9qx8k9qb5pwdwdxcsh2j70pmcw";
  -        };
  -        packageRequires = [];
  +        version = "1.5";
  +        src = fetchurl {
  +          url = "https://elpa.gnu.org/packages/temp-buffer-browse-1.5.el";
  +          sha256 = "1drfvqxc6g4vfijmx787b1ygq7x2s5wq26l45qnz4wdrqqmcqx3c";
  +        };
  +        packageRequires = [ emacs ];
           meta = {
             homepage = "https://elpa.gnu.org/packages/temp-buffer-browse.html";
             license = lib.licenses.free;
  
positive.code:       }) {};
      org = callPackage ({ elpaBuild, fetchurl, lib }: elpaBuild {
          pname = "org";
          version = "20160725";
          src = fetchurl {
            url = "https://elpa.gnu.org/packages/org-20160725.tar";
            sha256 = "05ky7hlsjqlml14ss9hcj2756clvsi1f26gv7a01d923m3drkqjc";
          };
          packageRequires = [];
          meta = {
  
negative.code:     wisi = callPackage ({ cl-lib ? null, elpaBuild, emacs, fetchurl, lib }:
      elpaBuild {
          pname = "wisi";
          version = "1.1.3";
          src = fetchurl {
            url = "https://elpa.gnu.org/packages/wisi-1.1.3.tar";
            sha256 = "1vhligxyg73gvr68767pjgiqxah00a920h6i37kip8xmhlkgp9ak";
          };
          packageRequires = [ cl-lib emacs ];
          meta = {
  