anchor.diff:      "graphics_engine"
       # Internal library of STK, nothing to do about it
       "graphics_utils"
  +    # Internal library.
  +    "simd_wrapper"
       # This irrlicht is bundled with cmake
       # whereas upstream irrlicht still uses
       # archaic Makefiles, too complicated to switch to.
  
positive.code: stdenv.mkDerivation rec {
  
    pname = "supertuxkart";
    version = "1.3";
  
    src = fetchFromGitHub {
      owner = "supertuxkart";
      repo = "stk-code";
      rev = version;
      sha256 = "1llyxkdc4m9gnjxqaxlpwvv3ayvpw2bfjzfkkrljaxhznq811g0l";
    };
  
    postPatch = ''
  
negative.code: , Cocoa
  , IOKit
  , libsamplerate
  , shaderc
  }:
  let
    assets = fetchsvn {
  