BUG #17672: Wrong logic of Postgresql Resporitory Naming and mirroring incompatibility

The following bug has been logged on the website:

Bug reference:      17672
Logged by:          Michael Burgener
Email address:      mike.burgener@zg.ch
PostgreSQL version: Unsupported/Unknown
Operating system:   Ubuntu/Debian Distrbution Postgres Repository
Description:

Dear Postgresql Community, while trying to mirror your repository to a
Canonical Landscape Server, i discovered that you don't follow the
guidelines of the Repository Format.

In your case the structure is like:
https://apt.postgresql.org/pub/repos/apt/dists/focal-pgdg/
where as of best-practice and for best compatibility with mirroring tools
etc. the format should be
https://apt.postgresql.org/pub/repos/apt/dists/focal/

I could not get landscape to mirror, as it quite strictly checks if the
repository is in the correct format and it internaly reuses the
$distribution name set earlier and globally as a variable value.

Maybe a quick on your repository to fullfill the Repository format standard
could be to link/bindmount

https://apt.postgresql.org/pub/repos/apt/dists/focal/ to
https://apt.postgresql.org/pub/repos/apt/dists/focal-pgdg/ (stable)

Another special case i discovered on your repositories, you are using the
Postgres-Version name like
https://apt.postgresql.org/pub/repos/apt/dists/focal-pgdg/12/ 
actually that's not really needed, as your package-names for each major
version seem to be different, you could just use
https://apt.postgresql.org/pub/repos/apt/dists/focal/postgresql and have all
versions like postgresql-12 postgresql-13 etc. in the same release file, as
thats selectable by apt later for example with "apt install postgresql-12"
"apt install postgresql-13"

My suggestion to have a proper repository setup which follows the guidelines
would be 

https://apt.postgresql.org/pub/repos/apt/dists/focal/postgresql
https://apt.postgresql.org/pub/repos/apt/dists/focal/postgresql-testing
https://apt.postgresql.org/pub/repos/apt/dists/focal/postgresql-snapshot

https://apt.postgresql.org/pub/repos/apt/dists/jammy/postgresql
https://apt.postgresql.org/pub/repos/apt/dists/jammy/postgresql-testing
https://apt.postgresql.org/pub/repos/apt/dists/jammy/postgresql-snapshot

Adjusting the Repository mirrors to better match the guidelines would make
things a lot easier to maintain IMHO.

Btw i provide Ubuntu Official mirrors for about 15 years now and have quite
some experience with Ubuntu/Debian package repos :-)

kind regards

Michael