# \[SOLVED\] Can't run REPL with Leinengen
**URL:** https://clojureverse.org/t/solved-cant-run-repl-with-leinengen/9225
**Category:** Beginners
**Tags:** clojure, leiningen, repl
**Created:** [August 10, 2022, 1:45pm UTC](https://clojureverse.org/t/solved-cant-run-repl-with-leinengen/9225 "2022-08-10T13:45:58Z")
**Posts on this page:** 6
**Page:** 1
### Author:  [@steakoverflow-me](https://clojureverse.org/u/steakoverflow-me)
#### Post date: [August 10, 2022, 1:45pm UTC](https://clojureverse.org/t/solved-cant-run-repl-with-leinengen/9225/1 "2022-08-10T13:45:58Z")
Hi all! I have a problem. Leiningen runs my application instead of REPL.
project.clj:
```auto
(defproject patients "0.1.0-SNAPSHOT"
:description "Test app"
:url ""
:license {:name "Eclipse Public License"
:url "http://www.eclipse.org/legal/epl-v10.html"}
:dependencies [[org.clojure/clojure "1.9.0"]
[ring/ring-core "1.9.5"]
[ring/ring-jetty-adapter "1.9.5"]
[compojure "1.7.0"]]
:main patients.app
:profiles {:dev {:plugins []
:dependencies []
:source-paths ["dev"]}})
```
src/patients/app.clj:
```auto
(ns patients.app)
(require '[ring.adapter.jetty :refer [run-jetty]])
(require '[compojure.core :refer [GET ANY defroutes]])
(defn page-index [request]
{:status 200
:headers {"content-type" "text/plain"}
:body "Application index!"})
(defn page-404 []
{:status 404
:headers {"content-type" "text/plain"}
:body "Page not found."})
(defroutes app
(GET "/" request (page-index request))
(ANY "/ping" _ {:status 200 :headers {"content-type" "text/plain"} :body "pong"})
page-404)
(run-jetty app {:port 8080 :join? true})
```
Terminal output:
```auto
lania-kea@lania-kea-macbook-pro patients % (main)
▸ lein --version
Leiningen 2.9.9 on Java 11.0.13 OpenJDK 64-Bit Server VM
lania-kea@lania-kea-macbook-pro patients % (main)
▸ lein repl
2022-08-10 19:13:23.958:INFO::main: Logging initialized @5437ms to org.eclipse.jetty.util.log.StdErrLog
2022-08-10 19:13:25.549:INFO:oejs.Server:main: jetty-9.4.44.v20210927; built: 2021-09-27T23:02:44.612Z; git: 8da83308eeca865e495e53ef315a249d63ba9332; jvm 11.0.13+8
2022-08-10 19:13:25.598:INFO:oejs.AbstractConnector:main: Started ServerConnector@71f437d7{HTTP/1.1, (http/1.1)}{0.0.0.0:8080}
2022-08-10 19:13:25.602:INFO:oejs.Server:main: Started @7081ms
REPL server launch timed out.
```
Server works well, all routes and 404 page are correctly available in browser. But I need REPL.
Please help, because I can’t go on my education process =(
---
### Author:  [@ronin78](https://clojureverse.org/u/ronin78)
#### Post date: [August 10, 2022, 2:22pm UTC](https://clojureverse.org/t/solved-cant-run-repl-with-leinengen/9225/2 "2022-08-10T14:22:18Z")
I’m not entirely sure about this, but I think your “(run-jetty…)” process is locking up the REPL connection. When I run programs like this I usually start the REPL independently, from the command line, run my “run whatever” or (-main), and “jack in” from my editor to work with the REPL.
---
### Author:  [@marcofiset](https://clojureverse.org/u/marcofiset)
#### Post date: [August 10, 2022, 2:58pm UTC](https://clojureverse.org/t/solved-cant-run-repl-with-leinengen/9225/3 "2022-08-10T14:58:44Z")
Yeah, this is pretty much what is happening.
You should move the `run-jetty` call to a function, and invoke that function manually once the REPL gets going.
---
### Author:  [@steakoverflow-me](https://clojureverse.org/u/steakoverflow-me)
#### Post date: [August 10, 2022, 3:53pm UTC](https://clojureverse.org/t/solved-cant-run-repl-with-leinengen/9225/4 "2022-08-10T15:53:12Z")
Thank you all for answers!
Helped to move server invocation to `-main` function.
---
### Author:  [@jr0cket](https://clojureverse.org/u/jr0cket)
#### Post date: [January 24, 2023, 12:42pm UTC](https://clojureverse.org/t/solved-cant-run-repl-with-leinengen/9225/5 "2023-01-24T12:42:01Z")
Use `:join false` when starting jetty app server to return to the REPL terminal prompt after the server starts
```auto
(run-jetty app {:port 8080 :join? false}
```
Otherwise with true the jetty sever keeps hold of the execution thread and blocks the REPL prompt from showing
---
### Author:  [@system](https://clojureverse.org/u/system)
#### Post date: [July 26, 2023, 12:42am UTC](https://clojureverse.org/t/solved-cant-run-repl-with-leinengen/9225/6 "2023-07-26T00:42:10Z")
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