The crown jewels of Lisp hacking tend to be sexp-based EDSLs that get macro-expanded into efficient code; in Haskell the crown jewels are denotational EDSLs built around opaque combinators stated in terms of the semantics, and equational rewrite rules for turning them into efficient codein Lisp you metaprogram with expressions, in Haskell you metaprogram with meanings
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