Make Element Call widget URL configurable

[bmarty]

Your use case

Please see and discuss the details in the meta issue.

Have you considered any alternatives?

No response

Additional context

No response

[ara4n]

Don't we already have this via config.json?

    "element_call": {
        "participants_limits": 8,
        "url": "https://example.com",
        "use_exclusively": false
    },

Or is the point that the URL should be switched to use .well-known/element/call.json instead?

[manuroe]

EW has already a mechanism to configure the widget URL within its own config file. No need for a change now.

[schelmo]

But ED (element-desktop) can only be configured via a local config.json.
It would be nice to make the Element Call url configurable via the .well-known/element/element.json url, so ED will use the right Element Call instance

[plui29989]

We also need this to work with Element Desktop...

[t3chguy]

You deploy Element Desktop configs in the exact same way as Element Web.

https://github.com/element-hq/element-desktop#user-specified-configjson or bake them in at build time: https://github.com/element-hq/element-desktop#config