This quite a short question. I was wondering how to express in Russian the sentence "I wish!" without any direct object. As a silly example, in English you could say
— Have you finished your project? — I wish!
Would in Russian make sense to just say Я хотел бы or Я хотелось бы?, without any direct object or would it sound weird? Or is there any idiomatic expression or word that means exactly this, like for example "ojalá" in Spanish?