anchor.diff:        elpaBuild {
           pname = "project";
           ename = "project";
  -        version = "0.5.3";
  -        src = fetchurl {
  -          url = "https://elpa.gnu.org/packages/project-0.5.3.el";
  -          sha256 = "0cpf69m41h8gfcqnq72h11925zdk35b7hw7bfy83xm83xwp12rxx";
  +        version = "0.5.4";
  +        src = fetchurl {
  +          url = "https://elpa.gnu.org/packages/project-0.5.4.tar";
  +          sha256 = "0arjvhzzcf8b80w94yvpgfdlhsjwf5jk1r7vcai5a4dg3bi9cxyb";
           };
           packageRequires = [ emacs xref ];
           meta = {
  
positive.code:           license = lib.licenses.free;
          };
        }) {};
      counsel = callPackage ({ elpaBuild, emacs, fetchurl, lib, swiper }:
        elpaBuild {
          pname = "counsel";
          ename = "counsel";
          version = "0.13.1";
          src = fetchurl {
            url = "https://elpa.gnu.org/packages/counsel-0.13.1.tar";
            sha256 = "0m4dmhj33cxaapn9lf7bj1r680gi2wd7cw9xlssjklzvic29a6db";
          };
          packageRequires = [ emacs swiper ];
          meta = {
            homepage = "https://elpa.gnu.org/packages/counsel.html";
            license = lib.licenses.free;
  
negative.code:       elpaBuild {
          pname = "map";
          ename = "map";
          version = "3.0";
          src = fetchurl {
            url = "https://elpa.gnu.org/packages/map-3.0.tar";
            sha256 = "00wf8lgh1b1i5l838y6di8194rf5gf5djklkhmxj1nlikz66j2ls";
          };
          packageRequires = [ emacs ];
          meta = {
  