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

Calculating dependencies ... done!
Dependency resolution took 1.05 s (backtrack: 0/20).

[ebuild   R    ] app-misc/screen-4.9.1-r2::gentoo  USE="pam -debug -multiuser -nethack (-selinux)" 1017 KiB

Total: 1 package (1 reinstall), Size of downloads: 1017 KiB