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Update the projectλ︎

Specify how Leiningen builds the project in more detail and tell Heroku how to run the application.

Configure the Leiningen Buildλ︎

Update the Clojure project file with a minimum version number for Leiningen and a name for the jar file that Leiningen will build

Edit the project.clj file and add the following lines, usually after the dependencies declarations

:min-lein-version "2.0.0"
:uberjar-name "todo-list.jar"

The update project file should look as follows

(defproject todo-list "0.1.0-SNAPSHOT"
  :description "A simple webapp using Ring"
  :url ""
  :license {:name "Eclipse Public License"
            :url ""}
  :dependencies [[org.clojure/clojure "1.6.0"]
                 [ring "1.4.0-beta2"]
                 [compojure "1.3.4"]]
  :main todo-list.core
  :min-lein-version "2.0.0"
  :uberjar-name "todo-list.jar"
  :profiles {:dev
              {:main todo-list.core/-dev-main}})