{ ... }: {
  programs.zsh = {
    enable = true; 
    enableCompletion = true;
    # autosuggestions.enable = true; 
    syntaxHighlighting.enable = true;
    shellAliases = {
      ll = "ls -l";
      upd = "sudo nixos-rebuild switch --flake /home/biscuit/Nixos/#biscuit";
      hupd = "home-manager switch --flake /home/biscuit/Nixos/#biscuit --impure";
    };
    history.size = 10000;
    oh-my-zsh = {
      enable = true; 
      theme = "robbyrussell";
    };
  };
}