CODEWITHSUNDEEP
scalasbt
moznion
moznion

Reputation: 57

sbt: How to get dependent jar files list by Scala code

I'm new to sbt. I'd like to know how to get dependent jar files by Scala code, not executing sbt plugin.

In Gradle, it supports to get dependent jar files by Java code like the following (project is an instance of Project class):

Configuration config = project.getRootProject().getBuildscript().getConfigurations().detachedConfiguration();
Set<File> jars = config.resolve();

I'd like to know a way to do like that in sbt and Scala. Does anyone know this? I tried to use sbt.Project#dependencies, but it seems that one doesn't meet for this purpose.

Upvotes: 1

Views: 754

Answers (1)

cbley
cbley

Reputation: 4608

You are looking for dependencyClasspathAsJars:

sbt > inspect dependencyClasspathAsJars

[info] Task: scala.collection.Seq[sbt.internal.util.Attributed[java.io.File]]
[info] Description:
[info]  The classpath consisting of internal and external, managed and unmanaged dependencies, all as JARs.
[info] Provided by:
[info]  ProjectRef(uri("file:/home/claudio/foo"), "foo") / Compile / dependencyClasspathAsJars
[info] Defined at:
[info]  (sbt.Classpaths.classpaths) Defaults.scala:1800
[info] Dependencies:
...

As you can see, this is a Task that returns a scala.collection.Seq[sbt.internal.util.Attributed[java.io.File]] where Attributed is just a simple wrapper around arbitrary data: https://www.scala-sbt.org/1.x/api/sbt/internal/util/Attributed.html

sbt > show dependencyClasspathAsJars

[info] List(Attributed(/home/claudio/.ivy2/cache/org.scala-lang/scala-library/jars/scala-library-2.13.1.jar),                                  
  Attributed(/home/claudio/.ivy2/cache/com.typesafe.play/twirl-api_2.13/jars/twirl-api_2.13-1.5.0.jar),                                          
  Attributed(/home/claudio/.ivy2/cache/org.scala-lang.modules/scala-xml_2.13/bundles/scala-xml_2.13-1.2.0.jar),                                  
  Attributed(/home/claudio/.ivy2/cache/com.typesafe.play/play-server_2.13/jars/play-server_2.13-2.8.1.jar),                                      
  Attributed(/home/claudio/.ivy2/cache/com.typesafe.play/play_2.13/jars/play_2.13-2.8.1.jar),                                                    
  Attributed(/home/claudio/.ivy2/cache/com.typesafe.play/build-link/jars/build-link-2.8.1.jar),                                                  
  Attributed(/home/claudio/.ivy2/cache/com.typesafe.play/play-exceptions/jars/play-exceptions-2.8.1.jar),                                        
  Attributed(/home/claudio/.ivy2/cache/com.typesafe.play/play-streams_2.13/jars/play-streams_2.13-2.8.1.jar),                                    
  Attributed(/home/claudio/.ivy2/cache/org.reactivestreams/reactive-streams/jars/reactive-streams-1.0.3.jar),                                    
  Attributed(/home/claudio/.ivy2/cache/com.typesafe.akka/akka-stream_2.13/jars/akka-stream_2.13-2.6.3.jar),                                      
  Attributed(/home/claudio/.ivy2/cache/com.typesafe.akka/akka-actor_2.13/jars/akka-actor_2.13-2.6.3.jar),                                        
  Attributed(/home/claudio/.ivy2/cache/com.typesafe/config/bundles/config-1.4.0.jar)
  ...)

If you want to process the value in any way, you probably want to write a custom task: https://www.scala-sbt.org/1.x/docs/Tasks.html

Upvotes: 4

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