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

Calculating dependencies ... done!
Dependency resolution took 0.99 s (backtrack: 0/20).

[ebuild  N     ] media-libs/libsidplay-2.1.1-r7:2::gentoo  USE="-static-libs" 1856 KiB

Total: 1 package (1 new), Size of downloads: 1856 KiB