In a sbt project, how to get full list of dependencies with scope? - sbt

Question

In a sbt project, how to get full list of dependencies(including transitive dependencies) with scope?
For Example:
xxx.jar(Compile)
yyy.jar(Provided)
zzz.jar(Test)
...

Answer 1

From the sbt shell you can execute one or all of the following commands:
Test / fullClasspath
Runtime / fullClasspath
Compile / fullClasspath
Which will output the jars associated with the scope (Test/Runtime/Compile).
If you want to get a bit more fancy, sbt provides a number of ways of interacting with the outputs generated through the dependency management system. The documentation is here.
For example, you could add this to your build.sbt file:
lazy val printReport = taskKey[Unit]("Report which jars are in each scope.")
printReport := {
val updateReport: UpdateReport = update.value
val jarFilter: ArtifactFilter = artifactFilter(`type` = "jar")
val testFilter = configurationFilter(name = "test")
val compileFilter = configurationFilter(name = "compile")
val testJars = updateReport.matching(jarFilter && testFilter)
val compileJars = updateReport.matching(jarFilter && compileFilter)
println("Test jars:\n===")
for (jar <- testJars.sorted) yield {println(jar.getName)}
println("\n\n******\n\n")
println("compile jars:\n===")
for (jar <- compileJars.sorted) yield {println(jar.getName)}
}
It creates a new task printReport which can be executed like a normal sbt command with sbt printReport. It takes the value of the UpdateReport which is generated by the update task, and then filters for jar files in the respective test/compile scopes before printing the results.