{ config, pkgs, ... }:

{
  imports = [
    ./private/default.nix

    ./settings/programs/accounting.nix
    ./settings/programs/shell.nix
  ];

  nixpkgs.config = {
    allowUnfree = true;
  };

  networking = {
    hostName = "trillian";
    knownNetworkServices = [ "Wi-Fi" "USB 10/100/1000 LAN" ];
    dns = [
      "::1"
      "127.0.0.1"
    ];
  };

  # Use a custom configuration.nix location.
  # $ darwin-rebuild switch -I darwin-config=$HOME/.config/nixpkgs/darwin/configuration.nix
  # environment.darwinConfig = "$HOME/.config/nixpkgs/darwin/configuration.nix";

  # Auto upgrade nix package and the daemon service.
  services.nix-daemon.enable = true;
  services.nix-daemon.enableSocketListener = true;
  # nix.package = pkgs.nix;

  services.activate-system.enable = true;

  # programs.nix-index.enable = true;

  programs.zsh.enable = true;
  programs.zsh.enableBashCompletion = true;

  environment.variables.LANG = "en_GB.UTF-8";

  programs.gnupg = {
    agent = {
      enable = true;
      enableSSHSupport = false;
    };
  };

  nix.gc = {
    automatic = true;
    user = "alan";
    options = "--max-freed $((25 * 1024**3 - 1024 * $(df -P -k /nix/store | tail -n 1 | awk '{ print $4 }')))";
  };
  nix.daemonNiceLevel = 10;
  nix.daemonIONice = true;

  # Used for backwards compatibility, please read the changelog before changing.
  # $ darwin-rebuild changelog
  system.stateVersion = 4;

  # You should generally set this to the total number of logical cores in your system.
  # $ sysctl -n hw.ncpu
  nix.maxJobs = 4;
  nix.buildCores = 2;
}
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