{ lib, ... }:
{
  nix = {
    gc = with lib; {
      automatic = mkDefault true;
      dates = mkDefault "19:00";
      persistent = mkDefault true;
      options = mkDefault "--delete-older-than 14d";
    };

    settings = with lib; {
      substituters = lib.mkForce [
        "https://nixos-cache-proxy.cofob.dev"
        "https://nix-community.cachix.org"
        "https://devenv.cachix.org"
      ];
      trusted-public-keys = [
        "nix-community.cachix.org-1:mB9FSh9qf2dCimDSUo8Zy7bkq5CX+/rkCWyvRCYg3Fs="
        "devenv.cachix.org-1:w1cLUi8dv3hnoSPGAuibQv+f9TZLr6cv/Hm9XgU50cw="
      ];

      accept-flake-config = true;
      auto-optimise-store = mkDefault true;
      experimental-features = [
        "nix-command"
        "flakes"
      ];
      download-buffer-size = 524288000;
      log-lines = 30;
      min-free = mkDefault "${toString (5 * 1024 * 1024 * 1024)}";
      max-free = mkDefault "${toString (10 * 1024 * 1024 * 1024)}";
      max-jobs = mkDefault 10;
      trusted-users = [
        "root"
        "@wheel"
      ];
      warn-dirty = true;
      sandbox-dev-shm-size = "70%";
    };
  };
}