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Hi! It's my first week of learning clojure. I just switched from cursive to vscode+calva. I'm trying to have my setup for a lein+figwheel project but somehow the Calva REPL doesn't have state (like functions I defined) from namespaces (also the app isn't on localhost port). In my terminal (outside Vscode) I can run lein figwheel and see my app in localhost. I can also (ns somenamespace) and it has the variables from there. Doesn't work with canva repl tho. Any suggestions?


Eval current form and load current namespace vscode commands also don't work


It looks like the problem is that the app isn't started as it should. You should have a cljs repl, but that is a clj one... How do you start the project?


I do "Calva: Start a Project REPL and Connect aka (jack-in)"


and then I chose leiningen + figwheel main (bc in iTerm I can just type lein figwheel -- which works for it)


This is the boilerplate I use: I copied the deps.edn from some forum


@ found your post here: will try but don't know if still relevant


ok didn't work...


Hi @, I cloned that repo you linked above and ran calva's jack-in command with the lein + figwheel option and the :dev profile, and I get this error upon startup.


You may need to add a figwheel build file. And like @ said, in your screenshot you have a clj repl window open. I believe the lein + fighweel jack-in may start both a clj and cljs repl and may automatically connect to the clj repl first.


You would need to run "Calva: Connec to a Running REPL Server in Project" and choose localhost:<port-of-cljs-repl>, which probably would be somewhere in terminal output if figwheel started one.


Calva can only be connected to a single repl at a time per vs code window. So you can only connect to either the clj repl or the cljs repl in a given vs code window


I'm not super familiar with fighweel or that startup profile (lein + fighweel) to give more detailed instructions, but maybe the info above can help you.


ok so I added a deps.cljs.edn file in root with {:main <projectname>.core} in it (as mentioned here: Then I try jack-in: CLJ repl yes, CLJS fail


The other approach - connecting to existing session: when I press enter for localhost:3449 nothing happens. But localhost:7002 is a new thing where it says:

Creating cljs repl session...
Connecting cljs repl: Leiningen + Figwheel Main...
Could not locate figwheel/main/api__init.class, figwheel/main/api.clj or figwheel/main/api.cljc on classpath.
Failed starting cljs repl


They say that's bc I don't have deps.edn but I do ... trying to figure it out


Ok couldn't find anything relevant or recent that worked. I'm not sure if deps.edn is redundant if I have figwheel dependencies in my project.clj . Apparently it's a classpath issue (I did this and updated deps.edn:

{:deps {org.clojure/clojure {:mvn/version "1.9.0"}
        org.clojure/clojurescript {:mvn/version "1.10.773"}
        com.bhauman/figwheel-main {:mvn/version "0.2.9"}
        com.bhauman/rebel-readline-cljs {:mvn/version "0.1.4"}
 ;; add "target" path here
 :paths ["src" "src-cljs" "resources" "target"]}
 {:fig {:main-opts ["-m" "figwheel.main"]
  :nrepl-server {:extra-deps {org.clojure/tools.nrepl {:mvn/version "0.2.13"}
                              cider/cider-nrepl {:mvn/version "0.19.0-SNAPSHOT"}
                              refactor-nrepl {:mvn/version "2.3.1"}}
                 :main-opts ["-m" "nrepl.cmdline" "--middleware" "[cider.nrepl/cider-middleware]"]}
  :nrepl-client {:extra-deps {org.clojure/tools.nrepl {:mvn/version "0.2.13"}
                              cider/cider-nrepl {:mvn/version "0.19.0-SNAPSHOT"}
                              refactor-nrepl {:mvn/version "2.3.1"}}
                 :main-opts ["-m" "nrepl.cmdline" "--connect" "--host" "localhost" "--port"]}


I got no idea what all this means. It reminds me of my webpack days which I've sworn to never revisit. I've put the new repo here: . Maybe @ can take another look and the classpath issue is easy to fix


seems project.clj and deps.edn are redundant but it gets recommended to have deps.edn everywhere idk


I'll have a look. I think you are brave in not giving up easily. This is probably mostly about figuring a few things out about how things are wired together. brb


OK. So I got it working. This is a lein-figwheel project. In Calva Jack-in, it is called Legacy Figwheel, because the maintained version of figwheel is Figwheel Main. Anyway, if you choose Legacy Figwheel as project type at Jack-in, and then the dev profile Calva will start the project correctly.


I recommend using Calva settings to not open the REPL Windows, and instead use the REPL from inline evaluation. Like what is suggested here:


Anyway, the project is using Leiningen as both the build tool and for dependencies, so no need for a deps.edn file. And, when reading Figwheel docs, make sure it is lein-figwheel that is described. Figwheel Main is a different thing (even if it does very similar things). It is no big deal switching to Figwheel Main later, so you don't need to worry about that right now I think. Legacy Figwheel will serve you well as you get acquainted with ClojureScript development. The #beginners channel is full of awesome and friendly people, btw. I have got tons of help there.


Wow. It was just Legacy not Main ... yes those names are confusing. Thanks @!