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

Calculating dependencies ... done!
Dependency resolution took 1.62 s (backtrack: 0/20).

[ebuild  N     ] dev-db/lmdb-0.9.36:0/0.9.36::gentoo  USE="-static-libs" 147 KiB
[ebuild  N     ] acct-group/ldap-0-r2::gentoo  0 KiB
[ebuild  N     ] acct-user/ldap-0-r2::gentoo  0 KiB
[ebuild  NS    ] dev-lang/lua-5.1.5-r200:5.1::gentoo [5.4.8:5.4::gentoo] USE="deprecated readline" 389 KiB
[ebuild  N     ] net-nds/openldap-2.6.14:0/2.6::gentoo  USE="cleartext crypt ssl syslog -argon2 -autoca -cxx -debug -experimental -gnutls -iodbc -kerberos -kinit -minimal -odbc -overlays -pbkdf2 -perl -samba -sasl (-selinux) -sha2 -smbkrb5passwd -static-libs (-systemd) -tcpd -test -verify-sig" 6372 KiB
[ebuild  N     ] dev-lua/lualdap-1.4.0::gentoo  USE="-test" LUA_TARGETS="lua5-1 -lua5-3 -lua5-4 -luajit" 82 KiB

Total: 6 packages (5 new, 1 in new slot), Size of downloads: 6988 KiB