anchor.diff:          packageRequires = [];
           meta = {
             homepage = "https://elpa.gnu.org/packages/rainbow-mode.html";
  +          license = lib.licenses.free;
  +        };
  +      }) {};
  +    rbit = callPackage ({ elpaBuild, fetchurl, lib }: elpaBuild {
  +        pname = "rbit";
  +        version = "0.1";
  +        src = fetchurl {
  +          url = "https://elpa.gnu.org/packages/rbit-0.1.el";
  +          sha256 = "0h0f9jx4xmkbyxk39wibrvnj65b1ylkz4sk4np7qcavfjs6dz3lm";
  +        };
  +        packageRequires = [];
  +        meta = {
  +          homepage = "https://elpa.gnu.org/packages/rbit.html";
             license = lib.licenses.free;
           };
         }) {};
  
positive.code:     ahungry-theme = callPackage ({ elpaBuild, emacs, fetchurl, lib }:
      elpaBuild {
          pname = "ahungry-theme";
          version = "1.8.0";
          src = fetchurl {
            url = "https://elpa.gnu.org/packages/ahungry-theme-1.8.0.tar";
            sha256 = "14dhnrlbjzrxk5ligf0z2im5bgnxpjqqzqcrmqg5355xrgpbpb7v";
          };
          packageRequires = [ emacs ];
          meta = {
  
negative.code:     mines = callPackage ({ cl-lib ? null, elpaBuild, emacs, fetchurl, lib }:
      elpaBuild {
          pname = "mines";
          version = "1.6";
          src = fetchurl {
            url = "https://elpa.gnu.org/packages/mines-1.6.tar";
            sha256 = "1199s1v4my0qpvc5aaxzbqayjn59vilxbqnywvyhvm7hz088aps2";
          };
          packageRequires = [ cl-lib emacs ];
          meta = {
  