Multiple inventories

[TGH-TH]

My ansible playbooks tend to use either no inventories (these playbooks seem ok with an empty inventory) or a folder full of inventories of various types but mostly dynamic - These don't appear to work and I'm at a loss on how to even get going with this - the non Semaphore environment just had a -i inv/ switch added (the folder inv contains all the other inventories/group_vars etc etc) to the ansible-playbook command - to further complicate matters this is all stored locally and configured on 'local' repositories - whilst I could you would think separate all my inventories out I actually can't as they interact (amalgamated 'in play' to another larger inventory) - There appears to be no way to select more than one inventory so thats a dead end - adding the good old CLI -i inv/ into the job doesn't work either and neither does just creating a new inventory with the folder name - documentation is rather thin on the ground with regards to inventories (non-existent more like!) - does anyone know how this works under the hood or has been down this path? - is there a way through or am I going to have to go elsewhere for my playbook scheduling.

[TGH-TH]

2 command line args were required - a -i AND inv/ - At least this gets me back to the old way and my playbooks working..