Is it in nixpkgs
? thanks.
External dependencies
The default HTML templates for the web-based modules1 depend on the Bootstrap 4 CSS and JavaScript libraries, and the jQuery library. They expect these to be available at https://example.com/share.
An easy way to provide theam instead if you are on Debian 10 (buster) is to enable mod_http_libjs and install the following packages:
apt install libjs-bootstrap4 libjs-jquery
On other systems you will need to manually fetch and put these libraries somewhere on the filesystem that Prosody can read, and serve them using mod_http_libjs with a custom libjs_path setting.