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

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

[ebuild  N     ] media-gfx/chafa-1.18.3::gentoo  USE="tools -avif -heif -jpegxl -svg -webp" 1046 KiB

Total: 1 package (1 new), Size of downloads: 1046 KiB