hi everyone, I was hoping someone could explain how nixConfig works in a flake. I've seen it in ghostty terminal's flake, and so I thought I would add the nix-community to my flake, which uses fenix. My understanding is that I would add the server for the binary cache, is this correct? But when I run nix develop and I'm thrown into a shell, I get the warning:

ignoring the client-specified setting 'trusted-public-keys', because it is a restricted setting and you are not a trusted user