Some time in the next week, the #spectrum:libera.chat Matrix room is going to stop working, as a result of a dispute between Libera.Chat and matrix.org.
So, unfortunately, if you want to keep using Matrix to participate in the Spectrum chat, you need to take some action:
1. Leave #spectrum:libera.chat 2. Join #spectrum:fairydust.space
It's very important to do it in that order, because otherwise the bridge gets confused and bad things happen.
If something goes wrong, rejoin either channel, ask for help, and we'll figure it out.
On the positive side, the new Matrix room is controlled by me, rather than by the administrators of the Matrix-Libera bridge. This means we can have nice things like room history, and if something like this happens again (needing to use a different bridge, moving IRC network, etc.), I should be able to use my room admin powers to change the setup transparently, without any action being required from individual Matrix users. So this is hopefully the last time I'm going to have to ask Matrix users to join a new room.