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

Calculating dependencies ... done!
Dependency resolution took 0.99 s (backtrack: 0/20).

[ebuild  N     ] sys-process/wait_on_pid-0.0.2-r2::gentoo  7 KiB
[ebuild  N     ] acct-group/vdr-0-r3::gentoo  0 KiB
[ebuild  N     ] acct-user/vdr-0-r3::gentoo  USE="-graphlcd -legacy-homedir -remote -serial (-systemd)" 0 KiB
[ebuild  N     ] media-tv/gentoo-vdr-scripts-3.0_rc2-r1::gentoo  58 KiB

Total: 4 packages (4 new), Size of downloads: 65 KiB