anchor.diff: -{ stdenv, lib, fetchgit, fetchurl, nodejs, phantomjs2, pkgs }:
  +{ stdenv, lib, fetchFromGitHub, nodejs, phantomjs2, pkgs }:
   
   with lib;
   
   let
   
     # highlight.js is a git submodule of remark
  -  highlightjs = fetchgit {
  -    url = "https://github.com/isagalaev/highlight.js";
  +  highlightjs = fetchFromGitHub {
  +    owner = "isagalaev";
  +    repo = "highlight.js";
       rev = "10b9500b67983f0a9c42d8ce8bf8e8c469f7078c";
       sha256 = "1yy8by15kfklw8lwh17z1swpj067q0skjjih12yawbryraig41m0";
     };
  
positive.code:     inherit (stdenv.hostPlatform) system;
    };
  
  in stdenv.mkDerivation rec {
    pname = "remarkjs";
  
    version = "0.7.0";
  
    src = fetchurl {
      url = "https://github.com/gnab/remark/archive/v${version}.tar.gz";
      sha256 = "1a2il6aa0g9cnig56ykmq8lr626pbxlsllk6js41h6gcn214rw60";
    };
  
    buildInputs = [ nodejs phantomjs2 ] ++ (with nodePackages; [
  
negative.code:   meta = {
      homepage = "https://remarkjs.com";
      description = "A simple, in-browser, markdown-driven slideshow tool";
      maintainers = [ ];
      platforms = lib.platforms.linux;
      license = lib.licenses.mit;
      broken = true;
  