chromium: use python2

gyp still depends on python 2 although that might change soon
https://codereview.chromium.org/1454433002/

Changed files
+4 -2
pkgs
applications
networking
browsers
chromium
+4 -2
pkgs/applications/networking/browsers/chromium/common.nix
···
, xdg_utils, yasm, minizip, libwebp
, libusb1, pciutils, nss
-
, python, pythonPackages, perl, pkgconfig
+
, python2Packages, perl, pkgconfig
, nspr, systemd, kerberos
, utillinux, alsaLib
, bison, gperf
···
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;
···
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