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{
  network = {
    description = "Immae's network";
    enableRollback = true;
  };

  eldiron = { config, pkgs, ... }: {
    networking = {
      firewall = {
        enable = true;
        allowedTCPPorts = [ 22 80 443 5432 ];
      };
    };

    deployment = {
      targetEnv = "hetzner";
      hetzner = {
        #robotUser = "defined in HETZNER_ROBOT_USER";
        #robotPass = "defined in HETZNER_ROBOT_PASS";
        mainIPv4 = "176.9.151.89";
        partitions = ''
          clearpart --all --initlabel --drives=sda,sdb

          part swap1 --recommended --label=swap1 --fstype=swap --ondisk=sda
          part swap2 --recommended --label=swap2 --fstype=swap --ondisk=sdb

          part raid.1 --grow --ondisk=sda
          part raid.2 --grow --ondisk=sdb

          raid / --level=1 --device=md0 --fstype=ext4 --label=root raid.1 raid.2
        '';
      };
    };

    # FIXME: how to run it? currently set as timer
    security.acme.certs = {
      "eldiron" = {
        webroot = "/var/lib/acme/acme-challenge";
        email = "ismael@bouya.org";
        domain = "eldiron.immae.eu";
        extraDomains = {
          "db-1.immae.eu" = null;
        };
      };
    };

    services.nginx = rec {
      enable = true;
      virtualHosts = {
        "_" = {
          serverName = "_";
          useACMEHost = "eldiron";
        };
        "eldiron.immae.eu" = {
          forceSSL = true;
          useACMEHost = "eldiron";
          locations."/" = {
            # FIXME: directory needs to exist
            root = "/var/www";
          };
        };
      };
    };

    # FIXME: initial sync
    services.postgresql = rec {
      enable = true;
      package = pkgs.postgresql100.overrideAttrs(old: rec {
        passthru = old.passthru // { psqlSchema = "11.0"; };
        name = "postgresql-11.1";
        src = pkgs.fetchurl {
          url = "mirror://postgresql/source/v11.1/${name}.tar.bz2";
          sha256 = "026v0sicsh7avzi45waf8shcbhivyxmi7qgn9fd1x0vl520mx0ch";
        };
      });
      enableTCPIP = true;
      extraConfig = ''
        max_connections = 100
        wal_level = logical
        shared_buffers = 128MB
        max_wal_size = 1GB
        min_wal_size = 80MB
        log_timezone = 'Europe/Paris'
        datestyle = 'iso, mdy'
        timezone = 'Europe/Paris'
        lc_messages = 'en_US.UTF-8'
        lc_monetary = 'en_US.UTF-8'
        lc_numeric = 'en_US.UTF-8'
        lc_time = 'en_US.UTF-8'
        default_text_search_config = 'pg_catalog.english'
        # ssl = on
        # ssl_cert_file = '/var/lib/acme/eldiron/fullchain.pem'
        # ssl_key_file = '/var/lib/acme/eldiron/key.pem'
        '';
      authentication = ''
        local	all	postgres				ident
        local	all	all					md5
        host	all	all		178.33.252.96/32	md5
        host	all	all		188.165.209.148/32	md5
        #host	all	all		all			pam
      '';
    };
  };
}