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

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

[ebuild  N     ] dev-libs/libusb-1.0.30:1::gentoo  USE="-debug -doc -examples -static-libs -test -udev -verify-sig" 641 KiB
[ebuild  N     ] virtual/libusb-1-r2:1::gentoo  USE="-udev" 0 KiB
[ebuild  N     ] dev-embedded/libftdi-1.5-r8:1::gentoo  USE="python -cxx -doc -examples -test -tools" PYTHON_SINGLE_TARGET="python3_14 -python3_12 -python3_13" 114 KiB

Total: 3 packages (3 new), Size of downloads: 755 KiB