deps.edn cljs node repl switches back to `cljs.user` namespace

[harold]

Expected behavior

Evaluating (* 6 7) in the repl wouldn't switch to a different namespace

Actual behavior

;; Connected to nREPL server - nrepl://localhost:44565
;; CIDER 1.17.1 (Cologne), nREPL 1.3.1
;; Clojure 1.12.0, Java 11.0.26
;;     Docs: (doc function-name)
;;           (find-doc part-of-name)
;;   Source: (source function-name)
;;  Javadoc: (javadoc java-object-or-class)
;;     Exit: <C-c C-q>
;;  Results: Stored in vars *1, *2, *3, an exception in *e;
;;  Startup: /usr/local/bin/clojure -Sdeps \{\:deps\ \{nrepl/nrepl\ \{\:mvn/version\ \"1.3.1\"\}\ cider/cider-nrepl\ \{\:mvn/version\ \"0.52.1\"\}\ cider/piggieback\ \{\:mvn/version\ \"0.5.3\"\}\}\ \:aliases\ \{\:cider/nrepl\ \{\:main-opts\ \[\"-m\"\ \"nrepl.cmdline\"\ \"--middleware\"\ \"\[cider.nrepl/cider-middleware\,cider.piggieback/wrap-cljs-repl\]\"\]\}\}\} -M:cider/nrepl
;;
;; ClojureScript REPL type: node
;; ClojureScript REPL init form: (do (require 'cljs.repl.node) (cider.piggieback/cljs-repl (cljs.repl.node/repl-env)))
;;
To quit, type: :cljs/quit
niluser> 
cljs.user> (+ 1 2 3)
6
cljs.user> (require '["fs" :as fs])
nil
cljs.user> (str (fs/readFileSync "./deps.edn"))
"{:deps {org.clojure/clojurescript {:mvn/version \"1.11.132\"}}}\n"
cljs.user> (in-ns 'foo.bar)
nil
foo.bar> (* 6 7)
42
cljs.user>

Steps to reproduce the problem

0. Ensure node is installed and on exec-path

(shell-command-to-string "node --version")
;; v20.16.0

1. Project setup:

harold@straylight:~/src$ cd cider-cljs-node-repl/
harold@straylight:~/src/cider-cljs-node-repl$ echo '{:deps {org.clojure/clojurescript {:mvn/version "1.11.132"}}}' > deps.edn
harold@straylight:~/src/cider-cljs-node-repl$ cat deps.edn 
{:deps {org.clojure/clojurescript {:mvn/version "1.11.132"}}}

2. find-file that deps.edn in emacs
3. cider-jack-in-cljs
4. "Select ClojureScript REPL type: " -> pick node
5. Wait a few seconds for everything to start up, and piggieback to do its thing
6. When at the cljs.user> prompt...

cljs.user> ;; prove we're in node
cljs.user> (require '["fs" :as fs])
nil
cljs.user> (str (fs/readFileSync "./deps.edn"))
"{:deps {org.clojure/clojurescript {:mvn/version \"1.11.132\"}}}\n"
cljs.user> (* 6 7)
42
cljs.user> (in-ns 'foo.bar)
nil
foo.bar> (* 6 7)
42
cljs.user> ;; expected to stay in foo.bar

Environment & Version information

CIDER version information

;; Connected to nREPL server - nrepl://localhost:40059
;; CIDER 1.17.1 (Cologne), nREPL 1.3.1
;; Clojure 1.12.0, Java 11.0.26

Lein / Clojure CLI version

$ clj --version
Clojure CLI version 1.12.0.1501

Emacs version

GNU Emacs 29.4 (build 1, x86_64-pc-linux-gnu, GTK+ Version 3.24.41, cairo version 1.18.0) of 2024-07-01, modified by Debian

Operating system

$ lsb_release -a
No LSB modules are available.
Distributor ID:	Ubuntu
Description:	Ubuntu 24.10
Release:	24.10
Codename:	oracular

JDK distribution

$ java -version
openjdk version "11.0.26" 2025-01-21
OpenJDK Runtime Environment (build 11.0.26+4-post-Ubuntu-1ubuntu124.10)
OpenJDK 64-Bit Server VM (build 11.0.26+4-post-Ubuntu-1ubuntu124.10, mixed mode, sharing)

[harold]

Related (same symptom): #909

[harold]

Note: The problem may not actually be in CIDER - I haven't experienced this problem in other repls (clj, shadow-cljs, etc...) in CIDER.

Also, it looks like the last time these symptoms were addressed, there were changes in both nrepl and piggieback, so the issue could certainly be somewhere in the interaction between these four (cider, nrepl, piggieback, cljs node repl)