anchor.diff:      python = callPackage ({ cl-lib ? null, elpaBuild, emacs, fetchurl, lib }:
       elpaBuild {
           pname = "python";
  -        version = "0.25.2";
  -        src = fetchurl {
  -          url = "https://elpa.gnu.org/packages/python-0.25.2.el";
  -          sha256 = "1ac2ipyg49sb0lz3n0ykj2s6592abd38l5d1cpbmv73j13l8zq5i";
  +        version = "0.26";
  +        src = fetchurl {
  +          url = "https://elpa.gnu.org/packages/python-0.26.el";
  +          sha256 = "197sq42xd4ryqq2zy1802pns6wf6n4vzx90yxgn1zzqpwffpv317";
           };
           packageRequires = [ cl-lib emacs ];
           meta = {
  
positive.code:       }) {};
      company = callPackage ({ elpaBuild, emacs, fetchurl, lib }: elpaBuild {
          pname = "company";
          version = "0.9.4";
          src = fetchurl {
            url = "https://elpa.gnu.org/packages/company-0.9.4.tar";
            sha256 = "1wm2nzjfn9cmjb6f5yvawrss7pg1r0swwwqqx602wg8hjrsiabay";
          };
          packageRequires = [ emacs ];
          meta = {
  
negative.code:       }) {};
      paced = callPackage ({ async, elpaBuild, emacs, fetchurl, lib }: elpaBuild {
          pname = "paced";
          version = "1.1.3";
          src = fetchurl {
            url = "https://elpa.gnu.org/packages/paced-1.1.3.tar";
            sha256 = "1gaszf68h0nnv6p6yzv48m24csw6v479nsq0f02y6slixxaflnwl";
          };
          packageRequires = [ async emacs ];
          meta = {
  