It's fine for now, unless you want to type your er...

# arrow

[Jorge Castillo]

It's fine for now, unless you want to type your errors as throwables and use IO<A>. In 0.11.0 IO<E, A> is coming, and you'll be able to drop the nested Either.

[raulraja]

If you type your errors to Throwable and you are not throwing them you may want to override fillInStackTrace in your custom exception to avoid expensive times constructing throwables