config/systems/mmacbookpro/finder.nix

{ config, ... }:

{
  system.defaults = {
    finder = {
      AppleShowAllExtensions = true;
      ShowPathbar = true;
      ShowStatusBar = true;
      FXDefaultSearchScope = "SCcf";
      FXPreferredViewStyle = "Nlsv";
      FXEnableExtensionChangeWarning = false;
    };
    NSGlobalDomain.AppleShowAllExtensions = true;
  };
}