I'm sure mysql works perfectly fine for text pattern - but if I already need to maintain a postgresql db with backups and point-in-time recovery (or rent a managed instance) - not needing to setup mysql would be nice.
And as for sqlite - it would allow for even simpler setups (and quite[1] easy backups).
>I thought WordPress had squashed tp long ago.
Wordpress is much more widely-used. Textpattern is still around!
Edit: I almost forgot about this:
https://wordpress.org/news/2006/04/wordpattern/
>supports modern php - but apparently still require mysql/MariaDB - no sqlite, no postgresql support?
Correct. MySQL and store brand remixes mostly work just fine, no plans for SQLite or PostgreSQL as far as I know. Pull requests are welcome!
https://github.com/textpattern/textpattern