anchor.diff:    installPhase = ''
       runHook preInstall
   
  -    install -Dm 444 -t $out/share/${pname} build/x16/rom.bin
  -    install -Dm 444 -t $out/share/doc/${pname} README.md
  +    install -Dm 444 -t $out/share/x16-rom/ build/x16/rom.bin
  +    install -Dm 444 -t $out/share/doc/x16-rom/ README.md
   
       runHook postInstall
     '';
  
positive.code:   };
  
    passthru = {
      # upstream project recommends emulator and rom synchronized;
      # passing through the version is useful to ensure this
      inherit version;
    };
  }
  
negative.code: , python3
  }:
  
  stdenv.mkDerivation (finalAttrs: {
    pname = "x16-rom";
    version = "41";
  
    src = fetchFromGitHub {
      owner = "commanderx16";
      repo = "x16-rom";
      rev = "r${finalAttrs.version}";
      hash = "sha256-kowdyUVi3hliqkL8VQo5dS3Dpxd4LQi5+5brkdnv0lE=";
    };
  
    nativeBuildInputs = [
  