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

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

[ebuild  N     ] media-libs/glycin-loaders-2.2.1:2::gentoo  USE="-debug -heif -jpegxl -svg -test" 21637 KiB

Total: 1 package (1 new), Size of downloads: 21637 KiB