@jcbrand I wonder whether it is possible for users to run converse.js from a file:// url?! This would make converse.js into a platform independent XMP client.
Is this possible? Are the respective packages available? (I did not find any.)
No it's not possible and won't be.
It's trivial to run your own webserver, you can do `make serve` inside a checkout of the repo and then open localhost:8080/dev.html (or edit index.html to use local resources).
Or with Python you can run `python -m http.server` to create a local webserver.