anchor.diff:            license = lib.licenses.free;
           };
         }) {};
  +    path-iterator = callPackage ({ elpaBuild, emacs, fetchurl, lib }:
  +      elpaBuild {
  +        pname = "path-iterator";
  +        ename = "path-iterator";
  +        version = "1.0";
  +        src = fetchurl {
  +          url = "https://elpa.gnu.org/packages/path-iterator-1.0.tar";
  +          sha256 = "0kgl7rhv9x23jyr6ahfy6ql447zpz9fnmfwldkpn69g7jdx6a3cc";
  +        };
  +        packageRequires = [ emacs ];
  +        meta = {
  +          homepage = "https://elpa.gnu.org/packages/path-iterator.html";
  +          license = lib.licenses.free;
  +        };
  +      }) {};
  +    peg = callPackage ({ elpaBuild, emacs, fetchurl, lib }:
  +      elpaBuild {
  +        pname = "peg";
  +        ename = "peg";
  +        version = "1.0";
  +        src = fetchurl {
  +          url = "https://elpa.gnu.org/packages/peg-1.0.tar";
  +          sha256 = "0skr5dz9k34r409hisnj37n1b7n62l3md0glnfx578xkbmxlpcxl";
  +        };
  +        packageRequires = [ emacs ];
  +        meta = {
  +          homepage = "https://elpa.gnu.org/packages/peg.html";
  +          license = lib.licenses.free;
  +        };
  +      }) {};
       persist = callPackage ({ elpaBuild, fetchurl, lib }:
         elpaBuild {
           pname = "persist";
  
positive.code:         packageRequires = [ emacs ];
          meta = {
            homepage = "https://elpa.gnu.org/packages/gcmh.html";
            license = lib.licenses.free;
          };
        }) {};
  
negative.code:           license = lib.licenses.free;
          };
        }) {};
      greenbar = callPackage ({ elpaBuild, fetchurl, lib }:
        elpaBuild {
          pname = "greenbar";
          ename = "greenbar";
          version = "1.1";
          src = fetchurl {
            url = "https://elpa.gnu.org/packages/greenbar-1.1.el";
            sha256 = "01ixv3489zdx2b67zqad6h7g8cpnzpzrvvkqyx7csqyrfx0qy27n";
          };
          packageRequires = [];
          meta = {
            homepage = "https://elpa.gnu.org/packages/greenbar.html";
            license = lib.licenses.free;
          };
        }) {};
      guess-language = callPackage ({ cl-lib ? null
                                    , elpaBuild
                                    , emacs
  