I am trying to install the carddav plugin for Roundcube, but this fails because the plugin requires separate dependencies.

I got it working by manually installing these dependencies in the plugin directory. This at first also failed, because composer requires a lot of RAM for its dependency resolutions mechanism.

So the full steps to do this in full were:

• Increase memory in app settings (I tried with 2GB)
• Open the terminal and run: cd /app/data/plugins/carddav && composer install --no-dev --optimize
• Update the /app/data/customconfig.php file (as listed in de docs)
• Decrease memory

Afterwards, this worked fine.

So I suggest adding a little bit of documentation to the Roundcube documentation page listing this.

I had the benefit of having year of professional experience in PHP development to figure this out, but not every user might.

Thank you for your great work. I've been a happy user of Cloudron for years now!