anchor.diff:        elpaBuild {
           pname = "flymake";
           ename = "flymake";
  -        version = "1.0.5";
  -        src = fetchurl {
  -          url = "https://elpa.gnu.org/packages/flymake-1.0.5.el";
  -          sha256 = "1zxzad84gcbdfh3pp606sspy8zkgxvngbzbimc2cam4pjcmwfx1y";
  +        version = "1.0.6";
  +        src = fetchurl {
  +          url = "https://elpa.gnu.org/packages/flymake-1.0.6.el";
  +          sha256 = "10n9vnabiz3m5gs3azc76x7y1p9qhc6aspgygw7awq9ff6hhkhbw";
           };
           packageRequires = [ emacs ];
           meta = {
  
positive.code:       elpaBuild {
          pname = "ivy";
          ename = "ivy";
          version = "0.10.0";
          src = fetchurl {
            url = "https://elpa.gnu.org/packages/ivy-0.10.0.tar";
            sha256 = "01m58inpd8jbfvzqsrwigzjfld9a66nf36cbya26dmdy7vwdm8xm";
          };
          packageRequires = [ emacs ];
          meta = {
  
negative.code:         packageRequires = [];
          meta = {
            homepage = "https://elpa.gnu.org/packages/ediprolog.html";
            license = lib.licenses.free;
          };
        }) {};
      eev = callPackage ({ elpaBuild, emacs, fetchurl, lib }:
        elpaBuild {
          pname = "eev";
          ename = "eev";
          version = "20190425";
          src = fetchurl {
            url = "https://elpa.gnu.org/packages/eev-20190425.tar";
            sha256 = "0wffwdkk68hcnkggrfmx0ag3pmapdzwzq54sx8y0m68aw0by90y1";
          };
          packageRequires = [ emacs ];
          meta = {
            homepage = "https://elpa.gnu.org/packages/eev.html";
            license = lib.licenses.free;
          };
        }) {};
  