Clojure/leiningen dependencies not downloading jars if nested

Question

I'm getting the following error:

#error {
 :cause org.apache.commons.codec.binary.Base32
 :via
 [{:type clojure.lang.Compiler$CompilerException
   :message java.lang.ClassNotFoundException: org.apache.commons.codec.binary.Base32, compiling:(crypto/random.clj:1:1)
   :at [clojure.lang.Compiler load Compiler.java 7239]}
  {:type java.lang.ClassNotFoundException
   :message org.apache.commons.codec.binary.Base32
   :at [java.net.URLClassLoader$1 run URLClassLoader.java 372]}]
 :trace
 [[java.net.URLClassLoader$1 run URLClassLoader.java 372]
  ...

And:

(use 'midje.repl)
CompilerException java.lang.IllegalArgumentException: No matching method: sha1Hex, compiling:(such/random.clj:17:3)

With these simple dependencies:

[[org.clojure/clojure "1.7.0"]
                 [org.clojure/data.json "0.2.6"]
                 [ring/ring-core "1.4.0"]
                 [ring/ring-jetty-adapter "1.4.0"]
                 [ring/ring-defaults "0.2.0"]
                 [necessary-evil "2.0.0"]
                 [compojure "1.5.0"]
                 [midje "1.8.1" :exclusions [org.clojure/clojure]]]

I can fix it by adding to the deps:

[commons-codec "1.6"]
[commons-codec "1.10"]

From what I can see, 1.6 and 1.10 is needed and the pom is only downloaded if I don't specify it. If I specify it, it then downloads the jar and all is well.

without it directly (only pom):

/c/working/tooling-alerts> lein deps
Picked up JAVA_TOOL_OPTIONS: -Duser.home=C:\Users\harrisky
(:repositories detected in user-level profiles! [:user]
See https://github.com/technomancy/leiningen/wiki/Repeatability)
Retrieving commons-codec/commons-codec/1.10/commons-codec-1.10.pom from

with it directly (after adding [commons-codec "1.10"]):

/c/working/tooling-alerts> lein deps
Picked up JAVA_TOOL_OPTIONS: -Duser.home=C:\Users\harrisky
(:repositories detected in user-level profiles! [:user]
See https://github.com/technomancy/leiningen/wiki/Repeatability)
Retrieving commons-codec/commons-codec/1.10/commons-codec-1.10.jar from

So, the problem looks to be with midje in this case- but I'm guessing it's more a problem with nested dependencies and lein. Ie if it's a nested dependency, only the pom is downloaded and not the jar. When specified directly, the jar is downloaded too.

Anyone else seen this problem and know what's up?

Have you looked at `lein deps :tree`? necessary-evil uses commons-codec 1.4 so I guess that might be the problem? — Asthor, Aug 07 '16 at 14:10

score 0 · Answer 1 · answered Aug 07 '16 at 14:25

You have a number of confusing or conflicting dependencies. Usually smart to have a look at lein deps :tree

I rearranged your dependencies and added an exclusions to necessary-evil for commons-codec which seems to fix the problem.

  :dependencies [[org.clojure/clojure "1.7.0"]
                 [midje "1.8.1" :exclusions [org.clojure/clojure]]
                 [org.clojure/data.json "0.2.6"]
                 [ring/ring-core "1.4.0"]
                 [ring/ring-jetty-adapter "1.4.0"]
                 [ring/ring-defaults "0.2.0"]
                 [necessary-evil "2.0.0" :exclusions [commons-codec]]
                 [compojure "1.5.0"]

Clojure/leiningen dependencies not downloading jars if nested

1 Answers1