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

Calculating dependencies ... done!
Dependency resolution took 0.96 s (backtrack: 0/20).

[ebuild  N     ] sys-firmware/ipxe-1.21.1_p20230601::gentoo  USE="binary ipv6 qemu -iso -lkrn -savedconfig -secureboot -uefi32 -uefi64 -undi -usb -vmware" 2196 KiB

Total: 1 package (1 new), Size of downloads: 2196 KiB