{ config, pkgs, ... }:

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

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

  networking.hostName = "ymir";
  networking.hostId = "1c5c994e";

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

  networking = {
    firewall = {
      enable = true;
      allowPing = true;
      allowedTCPPorts = [ 22
                        ];
      allowedUDPPortRanges = [ { from = 60000; to = 61000; } # mosh
                             ];
    };
    enableIPv6 = true;
    defaultGateway6 = "fe80::1";
    interfaces = {
      enp0s3 = {
        name = "enp0s3";
        ip6 = {
          address = "2a03:4000:6:d004::";
          prefixLength = "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;
  };

}