anchor.diff: -{ stdenv, lib, fetchurl, buildPythonPackage, python, libX11
  +{ lib, fetchPypi, buildPythonPackage, python, pkg-config, libX11
   , SDL, SDL_image, SDL_mixer, SDL_ttf, libpng, libjpeg, portmidi, freetype
   }:
   
  
positive.code:     LOCALBASE=/ ${python.interpreter} config.py
    '';
  
    meta = with stdenv.lib; {
      description = "Python library for games";
      homepage = http://www.pygame.org/;
      license = licenses.lgpl21Plus;
  
negative.code:   pname = "pygame";
    version = "1.9.4";
  
    src = fetchPypi {
      inherit pname version;
      sha256 = "700d1781c999af25d11bfd1f3e158ebb660f72ebccb2040ecafe5069d0b2c0b6";
    };
  
    nativeBuildInputs = [
      pkg-config SDL
    ];
  
    buildInputs = [
      SDL SDL_image SDL_mixer SDL_ttf libpng libjpeg
  