checking if a port is installed (even if not active) from a PortGroup?

[Ryan Carsten Schmidt]

On Sep 16, 2024, at 11:49, René J.V. Bertin wrote:
> 
> We can check for active ports, but what about any installed ports? Does any of the registry functions exported in the macports packages allow this or if not, is it possible to `require` one ore more packages to obtain access to the `registry::installed` procedure?

I don't know, but there's no reason why a portgroup would need to know this.