anchor.diff:      "--enable-voodoo"
       "--enable-x86-64"
       "--enable-x86-debugger"
  +  ] ++ lib.optionals enableSDL2 [
  +    "--with-sdl2"
  +  ] ++ lib.optionals enableTerm [
  +    "--with-term"
  +  ] ++ lib.optionals enableWx [
  +    "--with-wx"
  +  ] ++ lib.optionals enableX11 [
  +    "--with-x"
  +    "--with-x11"
     ] ++ lib.optionals (!stdenv.isDarwin) [
       "--enable-e1000"
       "--enable-es1370"
  
positive.code:   version = "2.7";
  
    src = fetchurl {
      url = "mirror://sourceforge/project/${finalAttrs.pname}/${finalAttrs.pname}/${finalAttrs.version}/${finalAttrs.pname}-${finalAttrs.version}.tar.gz";
      hash = "sha256-oBCrG/3HKsWgjS4kEs1HHA/r1mrx2TSbwNeWh53lsXo=";
    };
  
  
negative.code:     curl
      readline
      wget
    ] ++ lib.optionals enableSDL2 [
      SDL2
    ] ++ lib.optionals enableTerm [
      ncurses
    ] ++ lib.optionals enableWx [
      gtk3
      wxGTK
    ] ++ lib.optionals enableX11 [
      libGL
      libGLU
      libX11
      libXpm
    ] ++ lib.optionals stdenv.isDarwin [
      libobjc
    ];
  
    configureFlags = [
  