anchor.diff:    src = fetchurl {
       url = "https://github.com/libass/libass/releases/download/${version}/"
         + "${name}.tar.xz";
  -    sha256 = "881f2382af48aead75b7a0e02e65d88c5ebd369fe46bc77d9270a94aa8fd38a2";
  +    sha256 = "7065e5f5fb76e46f2042a62e7c68d81e5482dbeeda24644db1bd066e44da7e9d";
     };
   
     nativeBuildInputs = [
  
positive.code:   ];
  
    configureFlags = [
      "--${boolEn largeTilesSupport}-large-tiles"
    ];
  
    meta = with stdenv.lib; {
      description = "Library for SSA/ASS subtitles rendering";
  
negative.code: , fribidi
  , harfbuzz_lib
  
  , rasterizerSupport ? true # Internal rasterizer
  , largeTilesSupport ? false # Use larger tiles in the rasterizer
  }:
  
  