config/hosts/laptop/configuration.nix

{
  pkgs,
  userSettings,
  ...
}: {
  imports = [
    ../../modules/macos
  ];

  environment.systemPackages = with pkgs; [
    neovim
    pinentry_mac
    signal-desktop-bin
  ];

  # Create /etc/zshrc that loads the nix-darwin environment.
  programs = {
    gnupg.agent.enable = true;
    zsh.enable = true; # default shell on catalina
  };

  # When opening an interactive shell that isnt fish move into fish
  programs.zsh = {
    interactiveShellInit = ''
      if [[ $(${pkgs.procps}/bin/ps -p $PPID -o comm) != "fish" && -z ''${ZSH_EXUCTION_STRING} ]]
      then
        [[ -o login ]] && LOGIN_OPTION='--login' || LOGIN_OPTION=""
        exec ${pkgs.fish}/bin/fish $LOGIN_OPTION
      fi
    '';
  };
}