PortGroup directory hierarchy/priority

[René J.V. Bertin]

Hi,

Can someone please summarise the exact priority rules used in resolving the file to be included when using a PortGroup statement in a port?

I know that the _resource directory in a custom port tree only applies to the ports in that tree. Is there a specific reason why the ports from a custom tree can override the ones from the default tree (by defining the custom tree as a higher priority source, earlier in sources.conf) but not the PortGroup files?

R