anchor.diff:          packageRequires = [];
           meta = {
             homepage = "https://elpa.gnu.org/packages/pspp-mode.html";
  +          license = lib.licenses.free;
  +        };
  +      }) {};
  +    pulsar = callPackage ({ elpaBuild, emacs, fetchurl, lib }:
  +      elpaBuild {
  +        pname = "pulsar";
  +        ename = "pulsar";
  +        version = "0.2.0";
  +        src = fetchurl {
  +          url = "https://elpa.gnu.org/packages/pulsar-0.2.0.tar";
  +          sha256 = "0vil6gv7w6d77hksc2pbrwjdd8dp3ka4kf5kihx04r95032pky62";
  +        };
  +        packageRequires = [ emacs ];
  +        meta = {
  +          homepage = "https://elpa.gnu.org/packages/pulsar.html";
             license = lib.licenses.free;
           };
         }) {};
  
positive.code:       elpaBuild {
          pname = "ebdb";
          ename = "ebdb";
          version = "0.8.12";
          src = fetchurl {
            url = "https://elpa.gnu.org/packages/ebdb-0.8.12.tar";
            sha256 = "1k53crdmaw6lzvprsmpdfvg96ck54bzs4z1d4q9x890anglxq5m6";
          };
          packageRequires = [ emacs seq ];
          meta = {
  
negative.code:       elpaBuild {
          pname = "buffer-env";
          ename = "buffer-env";
          version = "0.3";
          src = fetchurl {
            url = "https://elpa.gnu.org/packages/buffer-env-0.3.tar";
            sha256 = "0h92pia258fndihnwmnak10ix00dmfanadnsnzbdah3q64416qhz";
          };
          packageRequires = [ emacs ];
          meta = {
  