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/jasper-4.2.2:0/7::gentoo  USE="jpeg opengl -doc -heif -test" 1935 KiB

Total: 1 package (1 new), Size of downloads: 1935 KiB