PowAssent will upsert the user identity, but not the user.

If you want to modify the user as well, you should be able to use custom context to do it, something like:

defmodule MyApp.UserIdentities do
  use PowAssent.Ecto.UserIdentities.Context,
    repo: MyApp.Repo,
    user: MyApp.Users.User

  def upsert(user, user_identity_params) do
    with {:ok, user_identity} <- pow_assent_upsert(user, user_identity_params),
         {:ok, _user} <- update_user(user, user_identity_params) do
      {:ok, user_identity}
    end
  end

  defp update_user(user, user_identity_params) do
    user
    # The user identities params will have all the user params on the `userinfo` key
    |> MyApp.Users.User.changeset(user_identity_params["userinfo"])
    |> MyApp.Repo.update()
  end
end