system/settings/darwin.nix


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{ config
, pkgs
, lib
, ...
}: {
  services.nix-daemon = {
    enable = true;
    enableSocketListener = true;
  };
  nix = {
    settings.cores = lib.mkDefault 0;
    daemonIOLowPriority = true;
    gc = {
      automatic = true;
      user = "alan";
      options = "--max-freed $((25 * 1024**3 - 1024 * $(df -P -k /nix/store | tail -n 1 | awk '{ print $4 }')))";
    };
    settings.extra-platforms = "aarch64-darwin x86_64-darwin";
    settings.experimental-features = "nix-command flakes";
    settings.warn-dirty = false;
    settings.keep-outputs = true;
    settings.keep-derivations = true;

    linux-builder.enable = true;
    settings.trusted-users = [ "@admin" ];
  };

  nixpkgs.config = {
    allowUnfree = true;
  };

  environment.systemPackages = with pkgs; [
    watch
    coreutils-prefixed
    nixos-rebuild # for rebuilds of remote systems
  ];
}