anchor.diff:            license = lib.licenses.free;
           };
         }) {};
  +    color-theme-tangotango = callPackage ({ color-theme
  +                                          , elpaBuild
  +                                          , fetchurl
  +                                          , lib }:
  +      elpaBuild {
  +        pname = "color-theme-tangotango";
  +        ename = "color-theme-tangotango";
  +        version = "0.0.6";
  +        src = fetchurl {
  +          url = "https://elpa.nongnu.org/nongnu/color-theme-tangotango-0.0.6.tar";
  +          sha256 = "0lfr3xg9xvfjb12kcw80d35a1ayn4f5w1dkd2b0kx0wxkq0bykim";
  +        };
  +        packageRequires = [ color-theme ];
  +        meta = {
  +          homepage = "https://elpa.gnu.org/packages/color-theme-tangotango.html";
  +          license = lib.licenses.free;
  +        };
  +      }) {};
       crux = callPackage ({ elpaBuild, fetchurl, lib, seq }:
         elpaBuild {
           pname = "crux";
  
positive.code:           license = lib.licenses.free;
          };
        }) {};
      vc-fossil = callPackage ({ elpaBuild, fetchurl, lib }:
        elpaBuild {
          pname = "vc-fossil";
  
negative.code:         packageRequires = [ emacs ];
          meta = {
            homepage = "https://elpa.gnu.org/packages/dart-mode.html";
            license = lib.licenses.free;
          };
        }) {};
      dracula-theme = callPackage ({ elpaBuild, emacs, fetchurl, lib }:
        elpaBuild {
          pname = "dracula-theme";
          ename = "dracula-theme";
          version = "1.7.0";
          src = fetchurl {
            url = "https://elpa.nongnu.org/nongnu/dracula-theme-1.7.0.tar";
            sha256 = "0vbi9560phdp38x5mfl1f9rp8cw7p7s2mvbww84ka0gfz0zrczpm";
          };
          packageRequires = [ emacs ];
          meta = {
            homepage = "https://elpa.gnu.org/packages/dracula-theme.html";
            license = lib.licenses.free;
          };
        }) {};
  