anchor.diff:          packageRequires = [ emacs ];
           meta = {
             homepage = "https://elpa.gnu.org/packages/request.html";
  +          license = lib.licenses.free;
  +        };
  +      }) {};
  +    rfc-mode = callPackage ({ elpaBuild, emacs, fetchurl, lib }:
  +      elpaBuild {
  +        pname = "rfc-mode";
  +        ename = "rfc-mode";
  +        version = "1.3.0";
  +        src = fetchurl {
  +          url = "https://elpa.nongnu.org/nongnu/rfc-mode-1.3.0.tar";
  +          sha256 = "1wdqp03rrx7ar21nvbnrb7518c3vgf41z00bav00pw8cdx5c4m10";
  +        };
  +        packageRequires = [ emacs ];
  +        meta = {
  +          homepage = "https://elpa.gnu.org/packages/rfc-mode.html";
             license = lib.licenses.free;
           };
         }) {};
  
positive.code:       elpaBuild {
          pname = "web-mode";
          ename = "web-mode";
          version = "17.3.1";
          src = fetchurl {
            url = "https://elpa.nongnu.org/nongnu/web-mode-17.3.1.tar";
            sha256 = "0xlpxk9qscxip93lqyl1l5bzv6nxgq5yb8r05s4jslcipbbfil1d";
          };
          packageRequires = [ emacs ];
          meta = {
  
negative.code:       elpaBuild {
          pname = "annotate";
          ename = "annotate";
          version = "1.8.1";
          src = fetchurl {
            url = "https://elpa.nongnu.org/nongnu/annotate-1.8.1.tar";
            sha256 = "00rpaki0vf6aiwa4by1v3hba79jmx1g7c283q1gibp4ka7grxzc2";
          };
          packageRequires = [];
          meta = {
  