Detect Modular via config.json

[jryans]

For the authentication redesign, we want to know if Riot's default HS is Modular or not. One way to do so would be to state that it is in config.json for Modular installs.

[jryans]

For a Modular-hosted Riot, we will

• Hide the 3 column server type selector on auth pages
• Add a note linking to riot.im in case the user was expecting to connect to some other server
• Skip the Modular server name prompt

[ara4n]

I suggest this isn’t done in a modular specific manner, but more: “forceHS”: true or something?

[jryans]

I suggest this isn’t done in a modular specific manner, but more: “forceHS”: true or something?

I went back and forth about this... I agree it's clearer and more future-proof to use settings specific to the desired behavior like you are suggesting.

Originally, I was worried we'd need to pre-select the Modular server type button on Modular-hosted Riots, but since we've decided to entirely hide the server type selector, then yes, I think something like that will work. "forceDefaultHS": true seems to capture the intent.

[jryans]

Filed https://github.com/matrix-org/matrix-hosted/issues/538 to add the extra config setting to Modular-hosted Riots.

[jryans]

Ah, we already have disable_custom_urls, so I think we could continue using this.

[jryans]

Modular now sets disable_custom_urls (which also hides the 3 column selector), so that seems sufficient here.