`Existing middleware descriptors whose :requires set contains #'pr-values should instead use #'wrap-print` according to https://github.com/nrepl/nrepl/releases/tag/0.6.0 And cider-nrepl is not using wrap-print yet: https://github.com/clojure-emacs/cider-nrepl/blob/d9be18eb23ec0f807681ce051a5823a40f43af28/src/cider/nrepl.clj#L9 So bumping nRepl to 0.6.0 breaks my cider-nrepl.