anchor.diff:        elpaBuild {
           pname = "vcomplete";
           ename = "vcomplete";
  -        version = "1.2.1";
  -        src = fetchurl {
  -          url = "https://elpa.nongnu.org/nongnu/vcomplete-1.2.1.tar";
  -          sha256 = "1fcchgv4kdmhzgincfy1jm625lwj3qrjskd0cswag5z15by6b5xf";
  +        version = "2.0";
  +        src = fetchurl {
  +          url = "https://elpa.nongnu.org/nongnu/vcomplete-2.0.tar";
  +          sha256 = "0fh5rfvhjmpfdhp4k4b1y57zlsixiabhzca9329id48p8jm4rqyp";
           };
           packageRequires = [ emacs ];
           meta = {
  
positive.code:       elpaBuild {
          pname = "sweeprolog";
          ename = "sweeprolog";
          version = "0.8.3";
          src = fetchurl {
            url = "https://elpa.nongnu.org/nongnu/sweeprolog-0.8.3.tar";
            sha256 = "0gng74bxb0nw7lm147gq2qsgry7y1dwskhrqfzfvx6jjvw86lcg7";
          };
          packageRequires = [ emacs ];
          meta = {
  
negative.code:       elpaBuild {
          pname = "subed";
          ename = "subed";
          version = "1.0.19";
          src = fetchurl {
            url = "https://elpa.nongnu.org/nongnu/subed-1.0.19.tar";
            sha256 = "1wgicb0lvnghhr3a1xndkaxhs1c9gc1ac5xwvxcsc9zpgzrlmcda";
          };
          packageRequires = [ emacs ];
          meta = {
  