In FreeBSD version 15, the names of the package sources were renamed in preparation for the switch to pkgbase. Anyone who has adapted the package sources according to these instructions should update them, as otherwise there will be a conflict of quarterly and latest packages. Whilst this often works fine, it leads to conflicts in the long run.

Background

The file /etc/pkg/FreeBSD.conf contains the package sources specified by the system. Any deviations from these are not written directly to this file, but to a separate file /usr/local/etc/pkg/repos/FreeBSD.conf. This prevents this system file from being overwritten during an update.

Before

FreeBSD: {
  url: "pkg+https://pkg.FreeBSD.org/${ABI}/latest",              
...

After

FreeBSD-ports: {
  url: "pkg+https://pkg.FreeBSD.org/${ABI}/latest",              
...
}

Fix it

sed -i '' 's/^FreeBSD: {$/FreeBSD-ports: {/g' /usr/local/etc/pkg/repos/FreeBSD.conf