{ 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.acme.name} counter accept comment "DNS gandi"
  add rule inet filter fw2net ip daddr 217.70.177.40 udp dport 53 skuid ${users.acme.name} counter accept comment "DNS gandi"
  add rule inet filter fw2net ip6 daddr 2001:4b98:d:1::40 tcp dport 53 skuid ${users.acme.name} counter accept comment "DNS gandi"
  add rule inet filter fw2net ip6 daddr 2001:4b98:d:1::40 udp dport 53 skuid ${users.acme.name} counter accept comment "DNS gandi"
'';
systemd.services."acme-${domain}".after = [
  "unbound.service"
];
security.acme.certs."${domain}" = {
  email = "root@${domain}";
  extraDomainNames = [
    "*.${domain}"
    "*.hut.${domain}"
  ];
  group = groups."acme".name;
  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
  '';
};
}