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

Calculating dependencies ... done!
Dependency resolution took 1.04 s (backtrack: 0/20).

[ebuild  N     ] sys-block/nbdkit-1.44.3::gentoo  USE="python zlib -curl -ext2 -gnutls -libguestfs -libssh -libvirt -lzma -nbd (-selinux) -torrent -valgrind -zlib-ng -zstd" PYTHON_SINGLE_TARGET="python3_14 -python3_12 -python3_13" 2594 KiB

Total: 1 package (1 new), Size of downloads: 2594 KiB