Speaking of NetBSD and pkgsrc, version 9.2 was released on the 18th of May. It included this, according to the release notes:

pkg_add(1): moved the default package database location on new installations from /var/db/pkg to /usr/pkg/pkgdb, for consistency with the pkgsrc bootstrap and pkgsrc on other platforms. It can be overridden in pkg_install.conf(5).