anchor.diff:        glib gtk2 dbus_glib
         libXScrnSaver libXcursor libXtst mesa
         pciutils protobuf speechd libXdamage
  -      pythonPackages.gyp pythonPackages.ply pythonPackages.jinja2
  +      gyp ply jinja2
       ] ++ optional gnomeKeyringSupport libgnome_keyring3
         ++ optionals gnomeSupport [ gnome.GConf libgcrypt ]
         ++ optional enableSELinux libselinux
  
positive.code: , xdg_utils, yasm, minizip, libwebp
  , libusb1, pciutils, nss
  
  , python, pythonPackages, perl, pkgconfig
  , nspr, systemd, kerberos
  , utillinux, alsaLib
  , bison, gperf
  
negative.code: with stdenv.lib;
  
  let
    inherit (python2Packages) python gyp ply jinja2;
  
    # The additional attributes for creating derivations based on the chromium
    # source tree.
    extraAttrs = buildFun base;
  