It used to be we exec()d stuff all the time, which led to
ldconfig -R being rerun regularly throughout pkg_add's run.

Now, a lot of those execs are only run as @tags, so they get delayed until
the final clean-up of all packages, which means that your binaries may
appear temporarily broken if you start running something because it has
finished updating, but pkg_add is not yet finished.


The following patch is a compromise, it will run ldconfig after
finishing each updateset, if the updateset changed the list 
of shared libraries.  

I think it's a reasonable trade-off. People do expect to be able to run
a package as soon as it's finished updating, even if pkg_add -u is still
running.


Index: PkgAdd.pm
===================================================================
RCS file: /build/data/openbsd/cvs/src/usr.sbin/pkg_add/OpenBSD/PkgAdd.pm,v
diff -u -p -r1.150 PkgAdd.pm
--- PkgAdd.pm	2 Jan 2024 10:25:48 -0000	1.150
+++ PkgAdd.pm	2 Dec 2024 21:24:00 -0000
@@ -847,6 +847,7 @@ sub really_add($set, $state)
 			$handle->location->{repository}->setup_cache($state->{setlist});
 		}
 	}
+	$state->ldconfig->ensure;
 	delete $state->{partial};
 	$set->{solver}->register_dependencies($state);
 	if ($replacing) {