anchor.diff:  , stdenv
   , lib
   , fetchFromGitHub
  -, unstableGitUpdater
  +, fetchpatch
  +, nix-update-script
   , qtbase
   , qtsvg
   , qttools
  
positive.code:     "--with-ffmpeg"
    ];
  
    passthru.updateScript = unstableGitUpdater {
      url = "https://github.com/punesemu/puNES.git";
    };
  
    meta = with lib; {
  
negative.code: 
  mkDerivation rec {
    pname = "punes";
    version = "0.108";
  
    src = fetchFromGitHub {
      owner = "punesemu";
      repo = "puNES";
      rev = "v${version}";
      sha256 = "0inkwmvbr2w4addmgk9r4f13yismang9ylfgflhh9352lf0lirv8";
    };
  
    patches = [
      # Drop when version > 0.108
      # https://github.com/punesemu/puNES/issues/185
      (fetchpatch {
        name = "0001-punes-Fixed-make-install.patch";
        url = "https://github.com/punesemu/puNES/commit/902434f50398ebcda0786ade4b28a0496084810e.patch";
        sha256 = "1a3052n3n1qipi4bd7f7gq4zl5jjjzzzpbijdisis2vxvhnfvcim";
      })
    ];
  
    postPatch = ''
      substituteInPlace configure.ac \
  