Well, the fun continues.
Before I did a clean install of 6.0 beta, I backed up my ansible playbooks from 5.4 VE which worked.
So did a 'apt-get install ansible' and 'apt-get python-pip. Then did a 'pip install proxmoxer'
When I run the playbook to create a VM, I get the following error:
'authorization on proxmox cluster failed with exception: invalid literal for float(): 6-0.1'
Did API access change from 5.4 to 6.0 beta?
I've created an issue for the record, will try to see if i can find some time to dig around in code.