{ pkgs, lib, config, ... }:
let
  domain = "sourcephile.fr";
  inherit (config.users) users groups;
in
{
networking.nftables.ruleset = ''
  # for lego to check DNS propagation on ns6.gandi.net
  add rule inet filter fw2net ip daddr 217.70.177.40 tcp dport 53 skuid ${users.root.name} counter accept comment "DNS gandi"
  add rule inet filter fw2net ip daddr 217.70.177.40 udp dport 53 skuid ${users.root.name} counter accept comment "DNS gandi"
'';
systemd.services."acme-${domain}".after = [
  "unbound.service"
];
security.acme.certs."${domain}" = {
  email = "root@${domain}";
  extraDomains = {
    "*.${domain}" = null;
  };
  group = groups."acme".name;
  allowKeysForGroup = true;
  keyType = "rsa4096";
  dnsProvider = "rfc2136";
  credentialsFile = pkgs.writeText "credentials" ''
    RFC2136_NAMESERVER=127.0.0.1:5353
    RFC2136_PROPAGATION_TIMEOUT=1000
    RFC2136_POLLING_INTERVAL=30
    RFC2136_SEQUENCE_INTERVAL=30
    RFC2136_DNS_TIMEOUT=1000
    RFC2136_TTL=1
  '';
};
}