anchor.diff:      "-DWITH_MOZJS=ON"
       "-DWITH_PYTHON2=OFF"
       "-DPYTHON3_SITEPKG_DIR=${placeholder "py3"}/${python3.sitePackages}"
  -  ];
  -
  -  patches = [
  -    # Make build with spidermonkey_60
  -    (fetchpatch {
  -      url = "https://github.com/libproxy/libproxy/pull/86.patch";
  -      sha256 = "17c06ilinrnzr7xnnmw9pc6zrncyaxcdd6r6k1ah5p156skbykfs";
  -    })
  -    (fetchpatch {
  -      url = "https://github.com/libproxy/libproxy/pull/87.patch";
  -      sha256 = "0sagzfwm16f33inbkwsp88w9wmrd034rjmw0y8d122f7k1qfx6zc";
  -    })
  -    (fetchpatch {
  -      url = "https://github.com/libproxy/libproxy/pull/95.patch";
  -      sha256 = "18vyr6wlis9zfwml86606jpgb9mss01l9aj31iiciml8p857aixi";
  -    })
  -    (fetchpatch {
  -      name = "CVE-2020-25219.patch";
  -      url = "https://github.com/libproxy/libproxy/commit/a83dae404feac517695c23ff43ce1e116e2bfbe0.patch";
  -      sha256 = "0wdh9qjq99aw0jnf2840237i3hagqzy42s09hz9chfgrw8pyr72k";
  -    })
  -    (fetchpatch {
  -      name = "CVE-2020-26154.patch";
  -      url = "https://github.com/libproxy/libproxy/commit/4411b523545b22022b4be7d0cac25aa170ae1d3e.patch";
  -      sha256 = "0pdy9sw49lxpaiwq073cisk0npir5bkch70nimdmpszxwp3fv1d8";
  -    })
  -
  -  ] ++ lib.optionals stdenv.isDarwin [
  -    (fetchpatch {
  -      url = "https://github.com/libproxy/libproxy/commit/44158f03f8522116758d335688ed840dfcb50ac8.patch";
  -      sha256 = "0axfvb6j7gcys6fkwi9dkn006imhvm3kqr83gpwban8419n0q5v1";
  -    })
     ];
   
     postFixup = lib.optionalString stdenv.isLinux ''
  
positive.code: 
  stdenv.mkDerivation rec {
    pname = "libproxy";
    version = "0.4.15";
  
    src = fetchFromGitHub {
      owner = "libproxy";
      repo = "libproxy";
      rev = version;
      sha256 = "10swd3x576pinx33iwsbd4h15fbh2snmfxzcmab4c56nb08qlbrs";
    };
  
    outputs = [ "out" "dev" "py3" ];
  
negative.code:     JavaScriptCore
    ] else [
      glib
      spidermonkey_68
      dbus
      networkmanager
    ]);
  