Dynamic inventory scripts

In a previous version of AWX, I was using a python script pointing at another
service within Kubernetes to provide the inventory.

I set this all up with scripts using the tower-cli tool.

I’m migrating to the latest version of AWX and awx cli (awxkit)
and I’m finding that the inventory_source which allowed me
to provide the dynamic script as an input doesn’t exist.

Moving this over to inventory_sources looked like an option but
–source_path is only valid for --source scm.

I’m not finding a migration path that allows me to provide an inventory script.

Can someone point me in the right direction?