How can I set a custom DNS server within Nixos?

Question

I've not found much information in the manual.

I've tried to manually modify the file /etc/resolv.conf however this seems to be overwritten by something?

How can I achieve this?

Answer 1

networking.nameservers = [ "1.1.1.1" "9.9.9.9" ]

Answer 2

  environment.etc = {
    "resolv.conf".text = "nameserver 192.168.0.32\n";
  };

Adding the above to my /etc/nixos/configuration.nix seems to work.