Feature Request: type safe function composition

There are many third party libraries, which aim to provide functional programming tools. Examples of this are fn.py and and funcy. They both provide a compose function that allows you to chain together an arbitrary number of functions. However none of the implementations are compatible with MyPy. Has there been any thought on the MyPy team about supporting such a feature, possibly in the typing submodule? I was able to get such a feature working with composing two functions, similar to this blog post https://www.fabianism.us/blog/2015/11/18/function-composition-with-types.html. But this doesn't scale to an arbitrary number of functions.

まず typing サブモジュールと、リンクされたブログ記事の2関数アプローチを確認します。関数合成が任意の数の関数をサポートしつつ MyPy との互換性を維持する方法を定義し、その後、代表的な型チェックのケースで動作を検証します。