anchor.diff:  
     installPhase = ''
       runHook preInstall
  -    install -D --mode 444 --target-directory $out/share/${pname} build/x16/rom.bin
  -    install -D --mode 444 --target-directory $out/share/doc/${pname} README.md
  +
  +    install -Dm 444 -t $out/share/${pname} build/x16/rom.bin
  +    install -Dm 444 -t $out/share/doc/${pname} README.md
  +
       runHook postInstall
     '';
   
  
positive.code:     description = "ROM file for CommanderX16 8-bit computer";
      license = licenses.bsd2;
      maintainers = with maintainers; [ AndersonTorres ];
      platforms = cc65.meta.platforms;
    };
  
    passthru = {
  
negative.code: , lib
  , fetchFromGitHub
  , cc65
  , python3
  }:
  
  stdenv.mkDerivation rec {
    pname = "x16-rom";
    version = "40";
  
    src = fetchFromGitHub {
      owner = "commanderx16";
      repo = pname;
      rev = "r${version}";
      hash = "sha256-5oqttuTJiJOUENncOJipAar22OsI1uG3G69m+eYoSh0=";
    };
  
    nativeBuildInputs = [
      cc65
      python3
    ];
  
    postPatch = ''
      patchShebangs scripts/
  