how to deal with duplicate users in the userlists?

[martbhell]

Consider this:

     adminusers:
       - {name: admin6, state: 'present', uid: 5006, group: "{{admingroup}}", shell: "{{adminshell}}" }
     moreusers:
       - {name: admin6, state: 'present', uid: 6011, group: "{{admingroup}}", generate_ssh_key: "yes", groups: ["bgroup"]  }

Quite easy to miss if you like me:

• separate the two user lists into several yaml files.
• exploded the yaml instead of having them on a single line like above

ansible-playbook --check does not complain with the above.

Without --check it sets admin6's uid to 6011 and the play changes them back and forth every run.

Thinking about different ways to prevent foot-shooting like this

Some random ideas:

• Have a built-in task that fails the play if some of the keys are not unique.
  • name & uid comes to mind that really should be unique? Maybe also home.
• Change / Also allow defining users in a single Dict instead of a list of Dicts?
  • There's some ansible.cfg that handles merges maybe worth thinking about if doing this
• Maybe there's something one can do in the loop: thing to map / combine, possibly hard to read?
• ??