"portinstall shotwell" failed during autoconfig, reporting YELP_HELP_INIT not found. The problem was fixed by installing textproc/yelp-tools.
This is very surprising. I just rebuilt my system, and shotwell built just fine in poudriere (and it sure does on the official package builders, or I would've gotten angry mails from that direction). Further, the whole shotwell build log has no reference to yelp (in neither capitalization, as per grep -i). Are you sure this is in the shotwell? Can you provide a build log?
Closing due to no feedback for > 1 year after comment #1.