{ pkgs, lib, config, ... }:
let
  inherit (config) networking;
  inherit (config.security) gnupg;
in
{
# This value determines the NixOS release with which your system is to be
# compatible, in order to avoid breaking some software such as database servers.
# You should change this only after NixOS release notes say you should.
system.stateVersion = "19.09"; # Did you read the comment?

nix.gc.dates = "weekly";
nix.gc.options = "--delete-older-than 7d";

/*
boot.binfmt.emulatedSystems = [ "aarch64-linux" ];
nix.binaryCaches = [
  "https://nixcache.reflex-frp.org"
  "https://arm.cachix.org"
];
nix.binaryCachePublicKeys = [
  "ryantrinkle.com-1:JJiAKaRv9mWgpVAz8dwewnZe0AzzEAzPkagE9SP5NWI="
  "arm.cachix.org-1:5BZ2kjoL1q6nWhlnrbAl+G7ThY7+HaBRD9PZzqZkbnM="
];
*/

# Avoid the use of systemd-run --user --scope tmux
# and let mosh work smoothly.
services.logind.killUserProcesses = false;

hardware.bluetooth.enable = true;
#services.blueman.enable = true;

documentation.nixos = {
  enable = false; # NOTE: useless on a server, and CPU intensive.
};

boot.kernelParams = [
  # Rotate the consoles anti-clockwise.
  #"fbcon=rotate:3"
];

environment.systemPackages = with pkgs; [
  bluez
  cryptsetup
  direnv
  f3
  file
  fio
  gdb
  git
  gptfdisk
  #hey
  home-manager
  lm_sensors
  rsync
  socat
  sanoid
  #iptables-nftables-compat
  pkgs.gnupg
  miniupnpc
  audit
  python
];
}