Bug report : from clojurescript 1.9.456 onward, the destructure of map malfunctioned just in cider REPL, like this: (let [{a :a} {:a 3}] a in REPL, it returns nil in 1.9.229 it works as expected

Hi! I keep seeing

error in process filter: [nREPL] Direct connection failed

Q: I have both repls in project (CLJ and CLJS). Where is the setting which will force using CLJS repl for .cljc files? Or it is not configurable now?

Ok hacking cider internals helped.

+++ (setq cider-use-clj-repl-for-cljs nil)

   (defun cider-connection-type-for-buffer ()
     "Return the matching connection type (clj or cljs) for the current buffer.”
     (cond
+++   ((derived-mode-p 'clojurec-mode) (if cider-use-clj-repl-for-cljs "clj" “cljs”))
      ((derived-mode-p 'clojurescript-mode) “cljs”)
      ((derived-mode-p 'clojure-mode) “clj”)
      (cider-repl-type)
      (t "clj")))

@hans, much better to open the repl in a separate terminal window, then cider-connect

then you see all the problems pop up in the terminal window

plus it's always a good idea to check the *cider nrep... buffer

@pesterhazy I like to see problems pop up in the *cider-nrepl* buffer, and I like to work from within emacs rather than having a separate terminal window open.

@pesterhazy Like, I would like to help fixing this bug rather than changing how I work to work around it.

and that's a good idea. To debug, I would run the repl in a separate terminal window and see if that works 🙂

that works.

and you can connect from cider?

yes.

ok so in all probability there's a difference between the way cider starts lein/boot and the way you start it manually

or maybe it just takes too long and cider gives up?

There are no error messages in the nrepl buffer. And if I repeat the attempt often enough, it succeeds. It has been a problem for years, really.

if you suspect something is wrong with your cider, you could try deleting all cider related packages from ~/.emacs.d/elpa and restart

It has been a problem on all kinds of different systems.

it could also be about the cider middleware used

perhaps related to your lein profile

Right. What I would really like is advice how I can find out what actually happens.