anchor.diff:            license = lib.licenses.free;
           };
         }) {};
  +    cobol-mode = callPackage ({ elpaBuild, fetchurl, lib }: elpaBuild {
  +        pname = "cobol-mode";
  +        version = "1.0.0";
  +        src = fetchurl {
  +          url = "https://elpa.gnu.org/packages/cobol-mode-1.0.0.el";
  +          sha256 = "1zmcfpl7v787yacc7gxm8mkp53fmrznp5mnad628phf3vj4kwnxi";
  +        };
  +        packageRequires = [];
  +        meta = {
  +          homepage = "https://elpa.gnu.org/packages/cobol-mode.html";
  +          license = lib.licenses.free;
  +        };
  +      }) {};
       coffee-mode = callPackage ({ elpaBuild, fetchurl, lib }: elpaBuild {
           pname = "coffee-mode";
           version = "0.4.1.1";
  
positive.code:     js2-mode = callPackage ({ cl-lib ? null, elpaBuild, emacs, fetchurl, lib }:
      elpaBuild {
          pname = "js2-mode";
          version = "20160623";
          src = fetchurl {
            url = "https://elpa.gnu.org/packages/js2-mode-20160623.tar";
            sha256 = "057djy6amda8kyprkb3v733d21nlmq5fgfazi65fywlfwyq1adxs";
          };
          packageRequires = [ cl-lib emacs ];
          meta = {
  
negative.code:     gnugo = callPackage ({ ascii-art-to-unicode, cl-lib ? null, elpaBuild, fetchurl, lib, xpm }:
      elpaBuild {
          pname = "gnugo";
          version = "3.0.1";
          src = fetchurl {
            url = "https://elpa.gnu.org/packages/gnugo-3.0.1.tar";
            sha256 = "08z2hg9mvsxdznq027cmwhkb5i7n7s9r2kvd4jha9xskrcnzj3pp";
          };
          packageRequires = [ ascii-art-to-unicode cl-lib xpm ];
          meta = {
  