Comment by tadzik_

Indeed. Perhaps standarizing something along the lines of anyhow/thiserror and documenting it as an upgrade path for those who want it is all they need to do. Or maybe there's some cool ideas yet undiscovered. Great to see that it's being acknowledged as a problem (or at least a documentation problem) – there's a lot of people who've never heard of anyhow and their stance is just "ugh, error handling is a PITA".