in leiningen eclipse Could not locate clojure/contrib/duck_streams__init.class or clojure/contrib/duck_streams.clj

Question

I have created one lein project, than updating its project.clj with dev-dependency of eclips

I ran "lein deps"

it downloaded all dependencies

but into my.m2/repository directory there is no clojure directory. and this causes me

leiningen.eclipse Problem loading: java.io.FileNotFoundException: Could not locate clojure/contrib/duck_streams__init.class or clojure/contrib/duck_streams.clj on classpath: (eclipse.clj:1)

error when i ran "lein help" which abandons me to develop with eclipse because i cant run my "lein eclipse" command.

Any solution for this??? Thanks in advance.

my project.clj is given below

(

  defproject for_test "1.0.0-SNAPSHOT"

  :description "FIXME: write description"

  :dependencies [[org.clojure/clojure "1.2.1"]]

  :dev-dependencies [[lein-eclipse "1.0.0"]]

)

Thnks 'n Regards, chirag ghiyad

NielsK NielsK · Accepted Answer · 2012-04-25T13:30:03

clojure.contrib is a separate library, and so it's dependency needs to be stated explicitly

:dependencies [[org.clojure/clojure "1.2.1"]
               [org.clojure/contrib "1.2.0"]]

From 1.3 upwards, the monolithic clojure.contrib is no more, and libraries have been split off as separate libraries.

These libraries should be found in /m2/org/clojure/clojure and /m2/org/clojure/clojure/contrib. Be aware these aren't put into your classpath automatically, only by running lein eclipse after running lein deps, which edits your eclipse .classpath and .projects file.

By the way, I would suggest using lein plugin install lein-ccw "1.2.0", which is Clojure 1.3 compatible compared to lein-eclipse. Instead of running lein eclipse after lein deps, you should use lein ccw.

I've always installed either lein-eclipse or lein-ccw plugins into leiningen through a commandline, so I don't know how dev-dependencies should work. In Leiningen 2.0, they separated plugin and dev-dependency functionality.

(Note: both of these plugins are only usable in stable Leiningen 1.7.1)

in leiningen eclipse Could not locate clojure/contrib/duck_streams__init.class or clojure/contrib/duck_streams.clj

2 Answers