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

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

[ebuild  N     ] net-libs/libssh-0.12.2:0/4::gentoo  USE="sftp zlib -debug -examples -fido2 -gssapi -mbedtls -pcap -server -static-libs -test -verify-sig" 742 KiB
[ebuild  N     ] net-libs/rtrlib-0.8.0-r1::gentoo  USE="ssh -doc -test" 257 KiB

Total: 2 packages (2 new), Size of downloads: 999 KiB