Version bumped in arch community to 1.12.
The gtk-program in our libre version errors with:
$ redshift-gtk
Traceback (most recent call last):
File "/usr/bin/redshift-gtk", line 26, in <module>
from redshift_gtk.statusicon import run
File "/usr/lib/python3.6/site-packages/redshift_gtk/statusicon.py", line 32, in <module>
import gi
File "/usr/lib/python3.6/site-packages/gi/__init__.py", line 42, in <module>
from . import gi
ImportError: cannot import name '_gi' from 'gi' (/usr/lib/python3.6/site-packages/gi/_init__.py)

The non-gtk version works fine.