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

Calculating dependencies ... done!
Dependency resolution took 1.03 s (backtrack: 0/20).

[ebuild  N     ] app-text/pandoc-bin-3.12.1::gentoo  USE="pandoc-symlink" 34535 KiB
[ebuild  N     ] acct-group/postgres-0-r3::gentoo  0 KiB
[ebuild  N     ] virtual/pandoc-0-r1::gentoo  0 KiB
[ebuild  N     ] acct-user/pgbouncer-0-r2::gentoo  0 KiB
[ebuild  N     ] dev-db/pgbouncer-1.26.0::gentoo  USE="c-ares pam ssl -debug -doc (-systemd)" 877 KiB

Total: 5 packages (5 new), Size of downloads: 35412 KiB