home/nixos/networking.nix

{
  pkgs,
  eth-interface ? "eth0",
  static-ip ? false, # false, or IPv4 address as string
  default-gateway ? "192.168.1.1",
}:
  let static-ip-conf = if static-ip != false then {
    networking.defaultGateway = { address = default-gateway; interface = eth-interface; };
    networking.useDHCP = false;
    networking.interfaces.${eth-interface}.ipv4.addresses = [ {
      address = static-ip;
      prefixLength = 24;
    } ];
    networking.networkmanager.unmanaged = [eth-interface];
  } else {};
in pkgs.lib.attrsets.recursiveUpdate static-ip-conf
{
  networking.networkmanager.enable = true;
  networking.nameservers = [ "8.8.8.8" ];
  networking.resolvconf.enable = true;
  networking.resolvconf.dnsExtensionMechanism = false; # edns seems to be fucky with this enabled
}