Juju doesn't allow empty custom resources list

[Kenneth Koski]

I would like to have a pod spec that includes a customResources section that looks similar to this:

    'customResources: {
        'foo.bar.io': [
            {...}
            for relation in endpoint.get_config()
        ]
    }

In other words, the charm in question may be related to 0+ other charms, and it should create a particular customResource for each relation. The issue is that I can't have an empty list there:

    ERROR empty custom resources "foo.bar.io" not valid

[Ian Booth (wallyworld)]

https://github.com/juju/juju/pull/12294