[capableweb]

As far as I know, the only official chat channels is #nixos (and #nixos-* friends) on Freenode (https://nixos.wiki/wiki/Get_In_Touch). There is an unofficial Discord, but I'd advice you to join the IRC channels instead, fast help and the people contributing to Nix actually hangs around as well.

[emptysongglass]

I've actually had terrible success getting help through the official channels: it's why I asked.