Well, I guess this is still in the running, PostgreSQL support...

We really want to quit MySQL. PHPbb2 runs fine with PostgreSQL, as many other projects. Currenyl we want to write some modules for Xoops.

a) Can You define which steps we need to do to enable postgreSQL to the installation process.
b) Currently we write a dating module. Are there some extended profile modules available ? What do You suggest ?

Can some people provide me some info and links to topics related to the general structure of modules. Is there a little doc available ?

I miss somehow diagrams and a little doc to write modules too.
Ref2read:https://xoops.org/modules/newbb/viewtopic.php?topic_id=26911&start=0#forumpost118302

Right now we are forced to study the classes in the API and to look to other modules. Two weeks of work...

If You want additional modules, I would suggest:

a) XOOPS team delivers those diagrams and a small doc, so we can concentrate to port/convert/write modules.

b) A wrapper/interface class for phpnuke & postnuke modules.

Note - Taken those links already in consideration:
<ul>
<li>http://docs.xoops.org</li>
<li>https://xoops.org/misc/api</li>
</ul>