{
  user ? throw "user argument is required",
  home ? throw "home argument is required",
}:
{ ... }:
{
  home-manager.users.${user}.programs.zsh.initExtra = ''
    nix-develop() {
      if [ -z "$1" ]; then
        echo "Usage: nix-develop <shell>"
        return 1
      fi
      nix develop self#"$1" -c "$SHELL"
    }
  '';
}