{config, pkgs, inputs, ...}:
{
  i18n.defaultLocale = "en_US.UTF-8";
  time.timeZone = "Europe/Berlin";

  environment.systemPackages = with pkgs; [
    wget
    tmux
    ripgrep
    git
    dua
    erdtree
    exa
    fd
    fzf
    bat
  ];

  networking.firewall.enable = true;

  users.users.alex = {
      isNormalUser = true;
      extraGroups = [ "wheel" "input" ];
      shell = pkgs.zsh;
  };

  nix = {
      gc = {
        automatic = true;
        dates = "weekly";
        options = "--delete-older-than 30d";
      };

      registry = {
        nixpkgs.flake = inputs.nixpkgs;
        nixpkgs-unstable.flake = inputs.nixpkgs-unstable;
      };

      settings = {
        auto-optimise-store = true;
        experimental-features = [ "nix-command" "flakes" ];
        warn-dirty = false;

        # avoid unwanted garbage collection when using direnv
        keep-outputs = true;
        keep-derivations = true;
      };
  };
}