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{ config, pkgs, ... }:

{
  imports =
    [
      ./ymir-hw.nix
      ./custom/zsh.nix
      ./users.nix
    ];

  boot.loader.grub = {
    enable = true;
    version = 2;
    device = "/dev/vda";
  };

  environment.systemPackages = with pkgs; [
    git
    mosh
    rsync
    tmux
    zsh
  ];

  networking = {
    hostName = "ymir";
    hostId = "1c5c994e";
    firewall = {
      enable = true;
      allowPing = true;
      allowedTCPPorts = [ 22
                          5222
                          5269
                        ];
      allowedUDPPortRanges = [ { from = 60000; to = 61000; } # mosh
                             ];
    };
    enableIPv6 = true;
    defaultGateway6 = "fe80::1";
    interfaces."enp0s3" = {
      ipv6Address = "2a03:4000:6:d004::";
      ipv6PrefixLength = 64;
    };
  };

  users.extraUsers.root = let
    template = (import users/gkleen.nix);
    in {
        inherit (template) shell;
        openssh.authorizedKeys.keyFiles = template.openssh.authorizedKeys.keyFiles;
      };

  services.ntp = {
    enable = false;
  };

  # List services that you want to enable:

  services.openssh = {
    enable = true;
  };

  services.fcron = {
    enable = true;
    systab = ''
      %weekly * * nix-collect-garbage --delete-older-than '7d'
    '';
  };

  services.chrony = {
    enable = true;
  };

  services.prosody = {
    enable = true;
    admins = [
               "gkleen@xmpp.li"
             ];
    allowRegistration = false;
    extraConfig = ''
      authentication = "pam"
    '';
    extraModules = [ "auth_pam"
                   ];

    virtualHosts.default = {
      enabled = true;
      domain = "xmpp.li";
      ssl = {
        key = "certs/xmpp.li.key";
        cert = "certs/xmpp.li.crt";
      };
    };
  };
  environment.etc."pam.d/xmpp" = {
    text = ''
      auth    [success=1 default=ignore]  pam_unix.so obscure sha512 nodelay
      auth    required                    pam_succeed_if.so user ingroup xmpp
      auth    requisite                   pam_deny.so
      auth    required                    pam_permit.so
    '';
  };
}