anchor.diff:        elpaBuild {
           pname = "org";
           ename = "org";
  -        version = "20191203";
  +        version = "20200504";
           src = fetchurl {
  -          url = "https://orgmode.org/elpa/org-20191203.tar";
  -          sha256 = "1fcgiswjnqmfzx3xkmlqyyhc4a8ms07vdsv7nkizgxqdh9hwfm2q";
  +          url = "https://orgmode.org/elpa/org-20200504.tar";
  +          sha256 = "1nalr2jafhzfkaf4bn8kscxd7nm1wz7dbw2629j2msxknw76dwk1";
           };
           packageRequires = [];
           meta = {
  
positive.code:       elpaBuild {
          pname = "org-plus-contrib";
          ename = "org-plus-contrib";
          version = "20191203";
          src = fetchurl {
            url = "https://orgmode.org/elpa/org-plus-contrib-20191203.tar";
            sha256 = "1kvw95492acb7gqn8gxbp1vg4fyw80w43yvflxnfxdf6jnnw2wah";
          };
          packageRequires = [];
          meta = {
  
negative.code:           license = lib.licenses.free;
          };
        }) {};
    }