{
  config,
  pkgs,
  lib,
  ...
}: {
  nix = {
    enable = false;
    settings = {
      substituters = [
        "https://cache.nixos.org/"
        "https://cache.iog.io"
        "https://haskell-language-server.cachix.org"
        "https://nix-community.cachix.org"
      ];
      trusted-users = ["@admin"];
      trusted-public-keys = [
        "cache.nixos.org-1:6NCHdD59X431o0gWypbMrAURkbJ16ZPMQFGspcDShjY="
        "hydra.iohk.io:f/Ea+s+dFdN+3Y/G+FDgSq+a5NEWhJGzdjvKNGv0/EQ="
        "haskell-language-server.cachix.org-1:juFfHrwkOxqIOZShtC4YC1uT1bBcq2RSvC7OMKx0Nz8="
        "nix-community.cachix.org-1:mB9FSh9qf2dCimDSUo8Zy7bkq5CX+/rkCWyvRCYg3Fs="
      ];

      experimental-features = ["ca-derivations" "nix-command" "flakes"];

      keep-outputs = true;
      keep-derivations = true;

      max-jobs = 32;
      cores = 0;
      http-connections = 64;
      download-buffer-size = 134217728; # 128 MB
    };
    # optimise.automatic = true;
    package = pkgs.nixVersions.latest;
  };

  nix.extraOptions =
    ''
      accept-flake-config = true
    ''
    + lib.optionalString (pkgs.system == "aarch64-darwin") ''
      extra-platforms = x86_64-darwin aarch64-darwin
    '';
}