anchor.diff:      libXScrnSaver libXcursor
     ] ++ stdenv.lib.optional gnomeKeyringSupport libgnome_keyring;
   
  -  opensslPatches = openssl.patches;
  +  opensslPatches = stdenv.lib.optional useOpenSSL openssl.patches;
   
     prePatch = "patchShebangs .";
   
  
positive.code:     proprietary_codecs = false;
      use_gnome_keyring = gnomeKeyringSupport;
      disable_nacl = !naclSupport;
      use_openssl = true;
      selinux = useSELinux;
      use_cups = false;
    } // stdenv.lib.optionalAttrs (stdenv.system == "x86_64-linux") {
  
negative.code: , v8, xdg_utils, yasm, zlib
  
  , python, perl, pkgconfig
  , nspr, nss, udev
  , utillinux, alsaLib
  , gcc, bison, gperf
  , krb5
  