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

Calculating dependencies ... done!
Dependency resolution took 1.00 s (backtrack: 0/20).

[ebuild  N     ] mail-client/neomutt-20260504::gentoo  USE="gdbm nls ssl zlib -autocrypt -berkdb -doc -gnutls -gpgme -idn -kerberos -kyotocabinet -lmdb -lz4 -notmuch -pgp-classic -qdbm -sasl (-selinux) -smime-classic -test -tokyocabinet -zstd" 4102 KiB

Total: 1 package (1 new), Size of downloads: 4102 KiB