You might want to look at anyhow and thiserror, the former for applications and for libraries the latter. thiserror "just" makes it easier to do what I suggested of writing a manual `impl From` so that `?` can transform from the error you're getting to the error you want. When the API you consume is very granular, that's actually great because it means that you have a lot of control over the transformation (it's hard to add detail that isn't already there), but it can be annoying when you don't care about that granularity (like when you just want to emit an error during shutdown or log during recovery).

https://momori.dev/posts/rust-error-handling-thiserror-anyho...

burntsushi has a good writeup about their difference in usecase here:

https://www.reddit.com/r/rust/comments/1cnhy7d/whats_the_wis...