My position is that a Juju *controller* should default to Focal for 2.9, but as 2.9 does support Jammy as a target, it is fine for a charm that says it wants to be deployed on Jammy to do so, even with 2.9.
My position is that a Juju *controller* should default to Focal for 2.9, but as 2.9 does support Jammy as a target, it is fine for a charm that says it wants to be deployed on Jammy to do so, even with 2.9.