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

Calculating dependencies ... done!
Dependency resolution took 1.01 s (backtrack: 0/20).

[ebuild  N     ] dev-libs/libgudev-238-r2::gentoo  USE="-introspection -test" 30 KiB
[ebuild  N     ] dev-libs/libgpiod-2.3.1-r1:0/3::gentoo  USE="dbus python tools -cxx -glib -introspection -static-libs -test" 231 KiB

Total: 2 packages (2 new), Size of downloads: 260 KiB