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

Calculating dependencies ... done!
Dependency resolution took 1.03 s (backtrack: 0/20).

[ebuild  N     ] media-libs/libva-compat-1.8.3-r3:1::gentoo  USE="X drm opengl -egl -wayland" 183 KiB

Total: 1 package (1 new), Size of downloads: 183 KiB