anchor.diff:            license = lib.licenses.free;
           };
         }) {};
  -  }
  +  }
positive.code:       elpaBuild {
          pname = "org";
          ename = "org";
          version = "20191203";
          src = fetchurl {
            url = "https://orgmode.org/elpa/org-20191203.tar";
            sha256 = "1fcgiswjnqmfzx3xkmlqyyhc4a8ms07vdsv7nkizgxqdh9hwfm2q";
          };
          packageRequires = [];
          meta = {
  
negative.code:       elpaBuild {
          pname = "org-plus-contrib";
          ename = "org-plus-contrib";
          version = "20200504";
          src = fetchurl {
            url = "https://orgmode.org/elpa/org-plus-contrib-20200504.tar";
            sha256 = "1ykw3qspz18jgf3ngsvk2ys282489fcjrbk7pbv3ppxzjha4rmhb";
          };
          packageRequires = [];
          meta = {
  