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

Calculating dependencies ... done!
Dependency resolution took 1.01 s (backtrack: 0/20).

[ebuild  N     ] sys-apps/sg3_utils-1.48:0/1.48::gentoo  USE="-static-libs" 1183 KiB
[ebuild  N     ] sys-power/acpid-2.0.34-r1::gentoo  USE="(-selinux)" 157 KiB
[ebuild  N     ] sys-apps/sdparm-1.12-r1::gentoo  476 KiB
[ebuild  N     ] app-laptop/laptop-mode-tools-1.74-r1::gentoo  USE="acpi -apm" 122 KiB

Total: 4 packages (4 new), Size of downloads: 1936 KiB