
I use Armbian (which is Debian + some adaptation board specific) on OrangePi PC+.
Current is Buster.
And there is a logical inconsistency in Debian repositories / software that can be installed (Armbian people told me to write on this forum):
You ship:
- PostgreSQL 11, BUT
- PgAdmin3, which, according to PgAdmin site is compatible only with versions of PostgreSQL up to 9.6.
"We" need PgAdmin4 "packaged & served"

As it is more complicated than version 3 this may take time.
When one could expect PgAdmin4 included in Debian Buster repositories?
Laurent.