postgresql-9.6-prefix: No summary available for postgresql-9.6-prefix in ubuntu zesty.
postgresql-9.6-prefix-dbgsym: No summary available for postgresql-9.6-prefix-dbgsym in ubuntu zesty.
There is no current release of this source package
in The Artful Aardvark.
You can still report bugs, make translations, and so on,
but they might not be used until the package is published.