De-duplication is not working

[thiagotalma]

The problem, apparently, is with the bar at the end of the url.

Here's how the final file is:

# Original APT package sources gathered by Ansible
deb http://archive.ubuntu.com/ubuntu/ xenial main universe
deb http://archive.ubuntu.com/ubuntu/ xenial-updates main universe
deb http://archive.ubuntu.com/ubuntu/ xenial-backports main universe

# Official Ubuntu repositories
deb http://archive.ubuntu.com/ubuntu xenial main universe
deb http://archive.ubuntu.com/ubuntu xenial-updates main universe
deb http://archive.ubuntu.com/ubuntu xenial-backports main universe

# Ubuntu Security repository
deb http://security.ubuntu.com/ubuntu xenial-security main universe

[drybjed]

Yes, the role currently compares the URLs directly, without stripping a slash at the end. This could be implemented and probably will be fixed in the DebOps monorepo at some point.