Fwiw I have been writing production Haskell for years, am comfortable with Category Theory etc, and most of my code is still in "records and pure functions (tha

Fwiw I have been writing production Haskell for years, am comfortable with Category Theory etc, and most of my code is still in "records and pure functions (that act on records)" style. You don't have to use the most esoteric constructs the language offers, or get into the weeds of how lenses work (just a random example of a seemingly 'esoteric' library) or language extensions to write code that does something useful. That said, a project centred Haskell book would be nice to have.