anchor.diff:        elpaBuild {
           pname = "xr";
           ename = "xr";
  -        version = "1.10";
  -        src = fetchurl {
  -          url = "https://elpa.gnu.org/packages/xr-1.10.tar";
  -          sha256 = "16p68rj5h609pnbp7y0jiiq1zkbksh4qqi1q8yby3ldj5x9sfpwc";
  +        version = "1.12";
  +        src = fetchurl {
  +          url = "https://elpa.gnu.org/packages/xr-1.12.tar";
  +          sha256 = "1vv87h0h8ldc1mbsn45w5z1m6jq8j2js4xz23a9ixdby06g60y3g";
           };
           packageRequires = [];
           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:       elpaBuild {
          pname = "ebdb";
          ename = "ebdb";
          version = "0.6.8";
          src = fetchurl {
            url = "https://elpa.gnu.org/packages/ebdb-0.6.8.tar";
            sha256 = "0bcs4f2l6cdg6hx3crk0vchhljhgwd1ik8n0p001gs1mk91178jp";
          };
          packageRequires = [ cl-lib emacs seq ];
          meta = {
  