anchor.diff:        elpaBuild {
           pname = "exwm";
           ename = "exwm";
  -        version = "0.22.1";
  -        src = fetchurl {
  -          url = "https://elpa.gnu.org/packages/exwm-0.22.1.tar";
  -          sha256 = "1ggb8vgxxml8c5bvamv9jgz80gs6h9xirjgphq8gwkywwd5xyiq4";
  +        version = "0.23";
  +        src = fetchurl {
  +          url = "https://elpa.gnu.org/packages/exwm-0.23.tar";
  +          sha256 = "05w1v3wrp1lzz20zd9lcvr5nhk809kgy6svvkbs15xhnr6x55ad5";
           };
           packageRequires = [ xelb ];
           meta = {
  
positive.code:           license = lib.licenses.free;
          };
        }) {};
      csv-mode = callPackage ({ elpaBuild, fetchurl, lib }:
        elpaBuild {
          pname = "csv-mode";
          ename = "csv-mode";
          version = "1.7";
          src = fetchurl {
            url = "https://elpa.gnu.org/packages/csv-mode-1.7.el";
            sha256 = "0r4bip0w3h55i8h6sxh06czf294mrhavybz0zypzrjw91m1bi7z6";
          };
          packageRequires = [];
          meta = {
            homepage = "https://elpa.gnu.org/packages/csv-mode.html";
            license = lib.licenses.free;
  
negative.code:       elpaBuild {
          pname = "xelb";
          ename = "xelb";
          version = "0.18";
          src = fetchurl {
            url = "https://elpa.gnu.org/packages/xelb-0.18.tar";
            sha256 = "1fp5mzl63sh0h3ws4l5p4qgvi7ny8a3fj6k4dhqa98xgw2bx03v7";
          };
          packageRequires = [ cl-generic emacs ];
          meta = {
  