vlc.config.userdatadir replacement for service discovery?

[roland1]

Does anybody have a list of directories vlc might use as userdatadir (on different systems)?

[Jean-Baptiste Kempf]

What for?

[roland1]

It is for the mediathek sd script.
There, persistence is needed (queries are persistent, database is also cached).
In sd scripts (environment) vlc.config is nil, so, in absence of vlc.config.userdatadir
I am about to build some search path (atm it is only ~/.local/share/vlc),
s.t. other systems can also run mediathek.

[Jean-Baptiste Kempf]

Why is persistence needed for mediathek?

[roland1]

For comfort!
After one-click activation of mediathek it populates all my past queries and I can browse through it. The screenshot at https://addons.videolan.org/p/1241457/ shows a playlist set up prior to activation through the search field (not hardcoded).
There are also minor reasons for caching as the database in use is availalable as .xz for download, decompressed size > 100 MB, size of Lua table'd be > 300 MB.
But, of course caching could be done elsewhere (e.g. os.getenv"TMPDIR" or os.getenv"TEMP" or os.getenv"TMP" or "/tmp".)
Disclaimer: This is not a request for having vlc.config available for sd scripts.
Thanks for reading.

[Jean-Baptiste Kempf]

Disclaimer: This is not a request for having vlc.config available for sd scripts.

Is it not?