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

Calculating dependencies ... done!
Dependency resolution took 1.02 s (backtrack: 0/20).

[ebuild   R    ] media-libs/harfbuzz-12.3.2:0/6.0.0::gentoo  USE="cairo glib graphite truetype -debug -doc -experimental -icu -introspection -test" 18832 KiB

Total: 1 package (1 reinstall), Size of downloads: 18832 KiB