Hi folks! What is the binding/command I need for dumping the nRepl activity again (all the commands sent and received) ?

nrepl-toggle-message-logging ?

I have auto complete in my repl but I don’t in clj files (clojure-mode), how do I find out why?

@nooga C-h m should give you the list of all the active modes for a buffer

Hi all! Has anyone encountered the problem that cider just doesn’t open a cider-repl buffer and also does not connect to the nrepl-server even though that one is running? (All after a call to cider-jack-in)

is there anything in the *Messages* buffer?

@dpsutton It ends with >Starting nREPL server via /Users/Elias/.local/bin/lein update-in :dependencies conj \[org.clojure/tools.nrepl\ \"0.2.12\"\ \:exclusions\ \[org.clojure/clojure\]\] -- update-in :plugins conj \[refactor-nrepl\ \"2.4.0-SNAPSHOT\"\] -- update-in :plugins conj \[cider/cider-nrepl\ \"0.15.1-SNAPSHOT\"\] -- repl :headless :host ::...

After this is nothing

And nothing more seems to come

is there a buffer created *nrepl-server [project-name]*?

yes that one is working

It evaluated my file

and nothing in there giving any info?

Only a warning about something in my code

>WARNING: or already refers to: #‘clojure.core/or in namespace: clojure-org.visualization.svg, being replaced by: #‘clojure-org.visualization.svg/or

From some testing around - i redefined or as macro

yeah that's not blocking this. hmm

do you have a lein profiles file or anything?

is this recent or have you been using cider for a while?

Yes i do but its only {:user {:plugins [[lein-exec "0.3.6"]]}}

I have been using cider for a while - it stopped working today after i tried out some code, mainly trying to get data from google/bing through slurp - working through clojure for the brave and true atm.

after you tried out some code?

Seems weird but yes

what code?

elisp or clojure?

(defn google-search-url
  [term]
  (str "" term))

(defn bing-search-url
  [term]
  (str "" term))

(defn search
  [term]
  (doseq [url [google-search-url bing-search-url]]
    (let [result (promise)]
      (future (if-let [answer (slurp (url term))]
                (deliver result answer)))
      @result)))

(search "golf")

I ran this clojure code in the repl and after that cider broke

And i couldn’t get it to work anymore with reinstalling everything, restart… etc.

I somehow don’t think that the code could have broken cider - its just when it happened somehow

yeah it looks innocent enough

do you have any java processes running?

Not that i recall, no

can you kill any you see and then try jacking in again

The only things running are chrome, terminal, slack and emacs

are you able to crank up a lein repl outside of cider?

maybe things are borked lower than we are looking?

I just killed all processes which are not crucial and tried again - to no avail.

Do you think it could be something OSX specific?

Yes lein repl runs nicely in terminal

have you nuked CIDER and reinstalled/

Inside, emacs, yes, i did

I once even threw out the whole emacs configuration with all packages and reinstalled everything

This bugs me a little that that didn’t even work ^^

I would like to see at least an error message somewhere - but i’m not familiar enough with emacs yet to find any 😄

(shell-command "lein repl") can you try that? is it possible that emacs can't see lein on your path?

Hmm where can i try that command? (Sry, really not so familiar with emacs)

Should i just put it in the config?

no, you can eval arbitrary emacs lisp by M-:

it'll ask you for the input in the minibuffer

or just (cider--lein-resolve-command)

to see if its on your path

I’ll try it 🙂 just my emacs is stuck atm

sorry to hear that. i know that's frustrating

Well it stuck after the shell command 😄 i guess lein repl was running in the background and held the process

Yea its on the path

(cider--lein-resolve-command) found it

ok

have you ever debugged emacs lisp code?

Not really 😄 i have not written any either except some small configurations

that's fine. it'll be straight forward

and i have a suspect in the code

(when-let ((repl-buff (cider-find-reusable-repl-buffer nil project-dir)))
                    (let ((nrepl-create-client-buffer-function  #'cider-repl-create)
                          (nrepl-use-this-as-repl-buffer repl-buff))
                      (nrepl-start-server-process
                       project-dir cmd
                       (when cljs-too #'cider-create-sibling-cljs-repl))))

that's a part of the cider-jack-in function. and if that when-let isn't satisfied, it would just error out

so my guess is that emacs isn't finding a repl buffer and there's no code for that case

Hmm but that used to work before and it started a repl buffer

So i wonder why it should suddenly be broken

Anyways, how can i debug this?

no idea

it's easy to instrument emacs lisp

to evaluate elisp you run C-M-x. To debug it you instrument it with C-u C-M-x (the prefix in emacs lingo)

and when you run cider jack in, it'll bring you to the emacs code with a little mark where evaluation is and you can hit n for next, c for continue, etc

Hmm i cannot really use any C-M commands, because on my mac, the meta key is somehow broken 😄 i use spacemacs with SPC-something-something

Do you know the names of these commands?

eval-defun with a prefix argument

When i run cider jack in it doesn’t sadly bring me to any code 😕

navigate to it

there may be a mark showing that youre in the debugger

find-function and then cider-jack-in will navigate right to it

I don’t get to the code o.O >condition-case: Symbol’s value as variable is void: helm-bookmark-map

can you navigate to the cider.el buffer in the cider package?

i don't know what's going on with your emacs

Me neither

But i’ve seen Symbol's value as variable is void quite some times now >.<

Okay i found cider-jack-in

run eval-buffer on this file

done

have you installed any packages recently?

Well, all packages i use, yes 😄

Because i reinstalled them all

any new ones recently?

around the time this stopped working?

No, they are stable since some time

But it stopped working today

but either way after evaling the file, try cider jack in now

No wait, it was yesterday… but i didn’t add any packages

I did, to no avail 😞

ok. now that you know where cider-jack-in is defined, want to try debugging it again?

Okay

or if you want you can print debug it but putting (message "some message here") and it will print them for you

I put it in when-let and it shows in the message buffer after cider-jack-in

Seems to be working so far

I wonder what

(let ((nrepl-create-client-buffer-function  #'cider-repl-create)
      (nrepl-use-this-as-repl-buffer repl-buff))

dynamic vars. used lower down the call stack

not great

Ouch that sounds dangerous

@magnars @dpsutton @jumar I filed an issue because this has also affected me, please pipe in to add details if needed 🙂 https://github.com/clojure-emacs/cider/issues/2084

thanks!

@dpsutton i dropped it for now - going to take another try on time. I hope i don’t have to switch the editor because of this

For sure. Sorry we couldn't get it right now