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

Calculating dependencies ... done!
Dependency resolution took 0.94 s (backtrack: 0/20).

[ebuild  N     ] dev-libs/libgpiod-1.6.4:0/2::gentoo  USE="python tools -cxx -test" 327 KiB

Total: 1 package (1 new), Size of downloads: 327 KiB