Comment 4 for bug 1940595

In the general case, I don't think we want charms to be behaving differently because they happened to be colocated with a particular other application. So for most cases we would rather they did not look at their environment.
However, there is an interesting case for things like landscape-client where it is really more about being a *machine* subordinate, where it wants to be monitoring everything going on in that machine (vs just the application that it happens to be related to, because we don't have a way to express charms that need to be present on a 'set of machines')
I think this would be more interesting for the DaemonSet/machine subordinate case than for the application subordinate case.

That said, looking at /var/lib/juju/agents doesn't feel that dirty, and the landscape-client charm doesn't run on non-linux, does it?