The last pgpool2 security update broke pgpool2 on big-endian s390x:
https://github.com/pgpool/pgpool2/issues/106
If this is left unfixed, the package will miss the Debian trixie
release (and likely apt.postgresql.org in the future).
I currently lack the spoons to work on this. Please step in if you are
interested in keeping pgpool2 updated.
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=772047
Christoph