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

Calculating dependencies ... done!
Dependency resolution took 1.11 s (backtrack: 0/20).

[ebuild  N     ] x11-misc/xkeyboard-config-2.48::gentoo  USE="-test" 931 KiB
[ebuild  N     ] dev-util/wayland-scanner-1.26.0::gentoo  599 KiB
[ebuild  N     ] media-libs/libepoxy-1.5.10-r3::gentoo  USE="X -test" 325 KiB
[ebuild  N     ] x11-libs/libxkbcommon-1.13.2::gentoo  USE="X -doc -static-libs -test -tools -wayland" 1215 KiB
[ebuild  N     ] dev-libs/wayland-1.26.0::gentoo  USE="-doc (-selinux) -test" 0 KiB
[ebuild  N     ] gui-libs/libwpe-1.16.3:1.0::gentoo  63 KiB
[ebuild  N     ] gui-libs/wpebackend-fdo-1.16.1:1.0::gentoo  47 KiB

Total: 7 packages (7 new), Size of downloads: 3178 KiB