lein uberjar - No configuration setting found for key 'akka.version'

[humorless]

When I used lein uberjar to build intowow.jar and run it with java -jar intowow.jar, it crashed as

Caused by: com.typesafe.config.ConfigException$Missing: No configuration setting found for key 'akka.version'

After searching the stackoverflow, the crash reason is: There are two akka jar files that both have a reference.conf in them. These files are not correctly merged because (unsurprisingly) lein uberjar doesn't understand the nesting of the property key/values within them.

[humorless]

My temporary solution is also manually merge the two reference.conf from org.spark-project.akka/akka-actor-2.10 and org.spark-project.akka/akka-remote_2.10

I took the following steps:

1. Find out which jar dependency related to akka:
   lein deps-tree | grep akka
2. Go to the ~/.m2/repository to find the corresponding jars and Get the reference.conf out from jar.
   jar xf akka-actor_2.10-2.2.3-shaded-protobuf.jar reference.conf
3. Manually merge the reference.conf
4. Update the intowow.jar
jar uf intowow.jar reference.conf

Wait for a more elegant way to solve this kind of issue.