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

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

[ebuild  N     ] net-libs/libyang-3.12.2:0/3::gentoo  USE="-doc -test" 1319 KiB
[ebuild  N     ] net-libs/libssh-0.12.2:0/4::gentoo  USE="server sftp zlib -debug -examples -fido2 -gssapi -mbedtls -pcap -static-libs -test -verify-sig" 742 KiB
[ebuild  N     ] net-libs/libnetconf2-3.7.1::gentoo  USE="-doc -test" 448 KiB

Total: 3 packages (3 new), Size of downloads: 2508 KiB

The following USE changes are necessary to proceed:
 (see "package.use" in the portage(5) man page for more details)
# required by net-libs/libnetconf2-3.7.1::gentoo
# required by =net-libs/libnetconf2-3.7.1 (argument)
>=net-libs/libssh-0.12.2 server