Clojure Q&A - Recent questions tagged calva

How can I make Calva use a relative path when loading a file in cljs?

Mon, 23 Sep 2024 18:35:32 +0000

Is there a way to make Calva: Load/Evaluate Current File and its Requires/Dependencies use a relative path for ClojureScript instead of an absolute path?

I'm connecting to a docker container repl for development and the app is running at /app inside the container. Loading the current file in Clojure works as expected and evaluating things that have already been loaded in ClojureScript works as expected. Loading the current file in ClojureScript fails because it uses the host machine's full path. I get the following error:

; ------ REPL Error while processing ---------------------------------------------
; (cljs.core/load-file "/home/bmaddy/.../model/user.cljc")
; FileNotFoundException: /home/bmaddy/.../model/user.cljc (No such file or directory)

The following all work in the cljs repl as expected:

;; absolute path inside the container
(cljs.core/load-file "/app/src/.../model/user.cljc")
[]
;; relative path from project folder
(cljs.core/load-file "./src/.../model/user.cljc")
[]
(cljs.core/load-file "src/.../model/user.cljc")
[]

I see there are JACK_IN_PROJECT_ROOT_PATH and calva.replConnectSequences.projectRootPath settings, but they don't seem to affect this.

Some version info:
Calva version used: v2.0.474
clojure-lsp version used: 2024.08.05-18.16.00
VSCode Version: 1.93.1
OS: Linux

Refresh/Reload deps.edn changes in Calva + VS Code in WSL Ubuntu

Mon, 19 Aug 2024 15:16:49 +0000

Hi, I am new to Clojure and am following this tutorial to make a Clojure API. This uses Cursive plugin in IntelliJ, but I am using Calva in VS Code.

This is my project structure:

 .
├── deps.edn
├── resources
│   └── config.edn
└── src
    └── clojure_api
        ├── config.clj
        └── core.clj

My config.clj file contents:

(ns clojure-api.config
    (:require [aero.core :as aero]
            [clojure.java.io :as io]))

(defn read-config []
  (-> "config.edn"
      (io/resource)
      (aero/read-config)))

I changed my deps.edn file to add the paths src & resources like this:

{:deps {aero/aero {:mvn/version "1.1.6"}} :path ["resources" "src"]}

while keeping the config.edn file an empty map: {}. However, I could not read the config file from read-config function in config.clj. It gave this error in Calva repl:

; Execution error (IllegalArgumentException) at aero.core/read-config-into-tagged-literal (core.cljc:194).
; Cannot open <nil> as a Reader.

The tutorial solved this error in Cursive by refreshing the project structure. I cannot seem to find any such commands in Calva. How can I update/refresh my project structure in Calva so that the deps.edn changes are reflected in the repl?

I have tried to restart the repl, reopening the folder in VS code, shuffling the resources directory around to no avail.

I could not find related answers to this problem after googling, so any help will be appreciated.

Feature Request for Clojure CLI: Treat empty deps.edn the same way as a non-existing one

Thu, 19 Jan 2023 21:48:27 +0000

When clojure is called from a directory with an empty deps.edn it exits with a non-zero value. I wonder if it could be considered to treat that situation the same as when there is no deps.edn file at all?

This would be improve the Calva Ux a great deal. Calva defaults to start clojure-lsp at activation. One activation trigger is that a Clojure file is opened. Creating a deps.edn file in VS Code will create it as an empty file which the user then can edit. When clojure-lsp starts because of the file creation, clojure is called by clojure-lsp to figure out the classpath. If the file is still empty by then, the command fails, and no clojure-lsp for the user in that session.

It gets extra important for beginners with Clojure, who we want to instruct how to create a minimal deps.edn project and use a Clojure editor to connect to the REPL. As it is now the instructions get complicated.

Is there a way to place the elements of a collection vertically with Calva?

Thu, 25 Aug 2022 02:22:23 +0000

I would like to know if i can pass from this:

[[1 2 3] [4 5 6] [7 8 9]]

..to this:

[[1 2 3]
[4 5 6]
[7 8 9]]

with Calva or another vscode shortcut instead of having to press enter in each item?

Thanks in advance! :)

Calva project type: shadow-cljs vs deps.edn + shadow-cljs?

Sat, 21 May 2022 19:46:14 +0000

Hi everyone, I’ve gone through the shadow-cljs quickstart guide in the GitHub repo README and got the desired message in the browser console. Next, I wanted to introduce deps.edn to the project. I had some (self-inflicted) difficulty in jacking in after adding deps.edn.

System details:
OS: WSL2
Java version: OpenJDK 11.0.15
Clojure CLI version: 1.11.1.1113

With only shadow-cljs.edn in the project, said file contents are:

;; shadow-cljs.edn
{:source-paths ["src/dev"
                "src/main"
                "src/test"]
 :dependencies []
 
 :dev-http {8080 "public"}
 :builds {:frontend {:target :browser
                     :modules {:main {:init-fn acme.frontend.app/init}}}}}

At this point, jacking in with Calva using the “shadow-cljs” project type, which both starts and connects to the “:frontend” build, works like a charm.

As mentioned in the first paragraph, I had difficulty with introducing deps.edn to the project.

Add deps.edn to the main project directory with the following contents:

;; deps.edn
{:paths ["src/main"
"src/dev"
"src/test"]

 :aliases
 {:cljs {:extra-deps {thheller/shadow-cljs {:mvn/version "2.19.0"}}}}}

Change shadow-cljs.edn to:

 ;; shadow-cljs.edn
    
 {:deps {:aliases [:cljs]}
        
:dev-http {8080 "public"}
        
:builds {:frontend {:target :browser
:modules {:main {:init-fn acme.frontend.app/init}}}}}

Jacking in with Calva using the “deps.edn + shadow-cljs” project type at this point leads to an error containing “Failed starting cljs repl for build: :frontend. Is the build running and connected?”

The Calva Connection Log also provides information, including: “shadow-cljs has not been started yet!” and “If you have a shadow-cljs server or watch running then you are not connected to that process.”

The build doesn’t seem to have been started. What if we run npx shadow-cljs watch frontend and then tried connecting to the REPL? Same error messages as before.

It turns out I should’ve instead kept using the “shadow-cljs” project type (in which case the addition of deps.edn goes down without a hitch).

This leads me to wonder:

When to use which project type?
Which is preferred for a fullstack
project?

Thanks to Peter and contributors for Calva!

Calva: Is there an option to add additional parameters when using "jack-in" in Calva

Wed, 18 May 2022 12:04:21 +0000

I was playing around with fulcro https://github.com/fulcrologic/fulcro-template#the-api-server

In the readme of the fulcro-template, it said clj -A:dev -J-Dtrace -J-Dguardrails.enabled=true to start a backend server. And use any editor that has REPL integration, like Cursive.

I can start repl using calva jack-in, but how can I add additional parameters like -J-Dtrace -J-Dguardrails.enabled=true

Calva: Is there a way to evaluate a whole file?

Tue, 17 May 2022 14:33:43 +0000

Beside selecting the whole file and then evaluating the selection, can I evaluate the whole file in a more convenient way?

Adapted from questions asked in the #calva channel at Clojurians Slack.

How to get Clojurescript REPL in Calva (Lein + Figwheel main)

Tue, 12 Apr 2022 04:27:18 +0000

Hi, I trying to setup editor for Clojure, currently struggling with Calva. I have fullstack project (cljs via Figwheel main) and whe I run repl (jack-in) then both repls get started (Lein + Figwheel Main config), but I cant switch to cljs repl, geting error "Cannot read properties of null (reading 'switchNS')"