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

Calculating dependencies ... done!
Dependency resolution took 1.00 s (backtrack: 0/20).

[ebuild  N     ] dev-build/muon-0.2.0-r2::gentoo  USE="archive curl libpkgconf" 499 KiB

Total: 1 package (1 new), Size of downloads: 499 KiB