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

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

[ebuild  N     ] app-backup/fsarchiver-0.8.9::gentoo  USE="zstd -debug -lz4 -lzma -lzo -static" 272 KiB

Total: 1 package (1 new), Size of downloads: 272 KiB