Kivy: CEF init

cefinit.py

# Newer Kivy versions include a Gtk+3 clipboard, and CEF will try to use Gtk+2, which
# causes an error. Importing Gtk from gi first fixes the issue.
try:
    from gi.repository import Gtk
except ImportError:
    pass

# cefpython import overwrites LD_LIBRARY_PATH. Bad module, BAD!
env_ld_library_path = os.environ.get('LD_LIBRARY_PATH', None)
from cefpython3 import cefpython # must be imported FIRST due to a tc_malloc hook
if env_ld_library_path:
    os.environ['LD_LIBRARY_PATH'] += ':' + env_ld_library_path