I think it should work out of the box, but we will see I guess. The README in that repo has the basic steps and you can read the roles to see everything that it will do to your machines before your run them. I think ansible also has a 'dry run' feature where you can see what it will do before it makes any changes.
Hope this helps
GLASS mailing list wrote
I wanted to check if there was progress on having the ansible playbook that would install GLASS 64bits in a fresh ubuntu 16.04.
Also I’d like to contribute in maintaining such useful little project