These are the packages that would be merged, in order:

Calculating dependencies ... done!
Dependency resolution took 1.50 s (backtrack: 0/20).

[ebuild     U  ] virtual/tmpfiles-0-r6::gentoo [0-r5::gentoo] USE="(-systemd)" 0 KiB

Total: 1 package (1 upgrade), Size of downloads: 0 KiB