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

Calculating dependencies ... done!
Dependency resolution took 0.98 s (backtrack: 0/20).

[ebuild  N     ] dev-build/muon-0.4.0::gentoo  USE="archive curl libpkgconf -test" 3364 KiB

Total: 1 package (1 new), Size of downloads: 3364 KiB