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

Calculating dependencies ... done!
Dependency resolution took 1.02 s (backtrack: 0/20).

[ebuild  N     ] media-libs/glycin-loaders-1.2.4-r1:1::gentoo  USE="-debug -heif -jpegxl -svg -test" 36311 KiB

Total: 1 package (1 new), Size of downloads: 36311 KiB