anchor.diff:            license = lib.licenses.free;
           };
         }) {};
  +    visual-fill = callPackage ({ elpaBuild, fetchurl, lib }:
  +      elpaBuild {
  +        pname = "visual-fill";
  +        ename = "visual-fill";
  +        version = "0.1";
  +        src = fetchurl {
  +          url = "https://elpa.gnu.org/packages/visual-fill-0.1.el";
  +          sha256 = "1y4xqcr1am74y9jy7kdkjigvx7h3208si5lm4p6a0kzxa3xizhvx";
  +        };
  +        packageRequires = [];
  +        meta = {
  +          homepage = "https://elpa.gnu.org/packages/visual-fill.html";
  +          license = lib.licenses.free;
  +        };
  +      }) {};
       vlf = callPackage ({ elpaBuild, fetchurl, lib }:
         elpaBuild {
           pname = "vlf";
  
positive.code:       elpaBuild {
          pname = "crisp";
          ename = "crisp";
          version = "1.3.4";
          src = fetchurl {
            url = "https://elpa.gnu.org/packages/crisp-1.3.4.el";
            sha256 = "1xbnf7xlw499zsnr5ky2bghb2fzg3g7cf2ldmbb7c3b84raryn0i";
          };
          packageRequires = [];
          meta = {
  
negative.code:           license = lib.licenses.free;
          };
        }) {};
      fountain-mode = callPackage ({ elpaBuild, emacs, fetchurl, lib }:
        elpaBuild {
          pname = "fountain-mode";
          ename = "fountain-mode";
          version = "2.6.1";
          src = fetchurl {
            url = "https://elpa.gnu.org/packages/fountain-mode-2.6.1.el";
            sha256 = "0p0h28cmryhsgrp2ghk28i1xkfz4gvdwaa38galn4jksn9dh0dyb";
          };
          packageRequires = [ emacs ];
          meta = {
            homepage = "https://elpa.gnu.org/packages/fountain-mode.html";
            license = lib.licenses.free;
          };
        }) {};
      frame-tabs = callPackage ({ elpaBuild, fetchurl, lib }:
        elpaBuild {
          pname = "frame-tabs";
  