{ lib, ... }:
{
  nixpkgs = {
    hostPlatform = lib.mkDefault "x86_64-linux";
    config.allowUnfree = true;
  };

  nix = {
    channel.enable = false;
    extraOptions = ''
      warn-dirty = false
    '';
    settings = {
      download-buffer-size = 262144000; # 250 MB
      auto-optimise-store = true;
      experimental-features = [
        "nix-command"
        "flakes"
      ];
      substituters = [
        "https://cache.nixos.org?priority=10"
        "https://hyprland.cachix.org"
        "https://nix-community.cachix.org"
        "https://numtide.cachix.org"
        "https://walker-git.cachix.org"
      ];
      trusted-users = [
        "root"
        "@wheel"
      ];
      trusted-public-keys = [
        "hyprland.cachix.org-1:a7pgxzMz7+chwVL3/pzj6jIBMioiJM7ypFP8PwtkuGc="
        "nix-community.cachix.org-1:mB9FSh9qf2dCimDSUo8Zy7bkq5CX+/rkCWyvRCYg3Fs="
        "numtide.cachix.org-1:2ps1kLBUWjxIneOy1Ik6cQjb41X0iXVXeHigGmycPPE="
        "walker-git.cachix.org-1:vmC0ocfPWh0S/vRAQGtChuiZBTAe4wiKDeyyXM0/7pM="
      ];
    };
  };
}