Greetings.

After updating profiles, I decided to try switching to merged-user, too,
following the wiki page at https://wiki.gentoo.org/wiki/Merge-usr

One server reported during the dry run:
ERROR: Conflict for file '/usr/sbin/spfd': [Errno 17] File exists: 
'/usr/bin/spfd'

# equery belongs /usr/bin/spfd
  * Searching for /usr/bin/spfd ...
mail-filter/libspf2-1.2.11 (/usr/bin/spfd)
# equery belongs /usr/sbin/spfd
  * Searching for /usr/sbin/spfd ...
dev-perl/Mail-SPF-2.9.0-r3 (/usr/sbin/spfd)

That does put me in a bit of a pickle, as both are active dependencies
pulled in by essential software:

# emerge -cav Mail-SPF

Calculating dependencies  ... done!
   dev-perl/Mail-SPF-2.9.0-r3 pulled in by:
     mail-filter/spamassassin-4.0.0-r4 requires dev-perl/Mail-SPF

 >>> No packages selected for removal by depclean
# emerge -cav libspf2

Calculating dependencies... done!
   mail-filter/libspf2-1.2.11 pulled in by:
     mail-filter/opendmarc-1.4.1.1-r5 requires mail-filter/libspf2
     mail-mta/exim-4.97.1-r5 requires >=mail-filter/libspf2-1.2.5-r1


What is the recommended way to proceed in this scenario?

Regards,
Stefan