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

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

[ebuild   R    ] dev-lang/tcl-8.6.17:0/8.6::gentoo  USE="threads -debug" 6867 KiB

Total: 1 package (1 reinstall), Size of downloads: 6867 KiB