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

Calculating dependencies ... done!
Dependency resolution took 1.09 s (backtrack: 0/20).

[ebuild  N     ] dev-util/vulkan-headers-1.4.363.0::gentoo  USE="-test" 3337 KiB
[ebuild  N     ] media-libs/libv4l-1.32.0-r1::gentoo  USE="jpeg utils -bpf -doc -dvb -qt6 -tracer" 1352 KiB
[ebuild  N     ] media-libs/vulkan-loader-1.4.363.0::gentoo  USE="X -wayland" 1823 KiB
[ebuild  N     ] sys-power/wluma-4.4.0-r2::gentoo  USE="-debug" 34691 KiB

Total: 4 packages (4 new), Size of downloads: 41201 KiB