anchor.diff: -{ stdenv, fetchurl, python, pandoc }:
  +{ stdenv, fetchurl, python, pandoc, zip }:
   
   let
     version = "2012.12.11";
  
positive.code:   meta = {
      homepage = "http://rg3.github.com/youtube-dl/";
      description = "Command-line tool to download videos from YouTube.com and other sites";
      maintainers = [ stdenv.lib.maintainers.bluescreen303 stdenv.lib.maintainers.simons ];
    };
  }
  
negative.code:     sha256 = "03zv3z8p0fi122nqj7ff8hkgqscir4s7psm03rq7dfpg1z35klmn";
    };
  
    buildInputs = [ python ];
    buildNativeInputs = [ pandoc zip ];
  
    patchPhase = ''
      rm youtube-dl
      substituteInPlace Makefile --replace "#!/usr/bin/env python" "#!${python}/bin/python"
    '';
  
    configurePhase = ''
      makeFlagsArray=( PREFIX=$out SYSCONFDIR=$out/etc )
  