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

Calculating dependencies ... done!
Dependency resolution took 1.03 s (backtrack: 0/20).

[ebuild  N     ] app-emulation/libspectrum-1.6.1:0/18::gentoo  USE="bzip2 zlib -audiofile -gcrypt" 627 KiB

Total: 1 package (1 new), Size of downloads: 627 KiB