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-util/mingw64-toolchain-14.0.0_p1::gentoo  USE="bin-symlinks strip -custom-cflags" 143945 KiB

Total: 1 package (1 new), Size of downloads: 143945 KiB