{ ... }:

{
  nix.settings = {
    allowed-users = [ "@wheel" ];
    substituters = [
      "https://mirrors.ustc.edu.cn/nix-channels/store"
      "https://mirrors.tuna.tsinghua.edu.cn/nix-channels/store"
      "https://mirror.sjtu.edu.cn/nix-channels/store"

      "https://hyprland.cachix.org"
    ];
    trusted-public-keys = [
      "hyprland.cachix.org-1:a7pgxzMz7+chwVL3/pzj6jIBMioiJM7ypFP8PwtkuGc=" # https://hyprland.cachix.org
    ];
    use-xdg-base-directories = true;
  };

  documentation = {
    doc.enable = false;
    info.enable = false;
    nixos.enable = false;
  };

  #nix.useSandbox = false;

  system = {
    # Copy the NixOS configuration file and link it from the resulting system
    # (/run/current-system/configuration.nix). This is useful in case you
    # accidentally delete configuration.nix.

    # Does not work with flake based configurations
    #copySystemConfiguration = true; 


    # This value determines the NixOS release from which the default
    # settings for stateful data, like file locations and database versions
    # on your system were taken. It's perfectly fine and recommended to leave
    # this value at the release version of the first install of this system.
    # Before changing this value read the documentation for this option
    # (e.g. man configuration.nix or on https://nixos.org/nixos/options.html).

    # TLDR: leave it alone
    stateVersion = "23.05";
  };
}