playframework - Adding Play JSON Library to sbt

Question

How can I add the Play JSON library (play.api.libs.json) to my sbt project?

When I added the following to my plugins.sbt file:

addSbtPlugin("play" % "sbt-plugin" % "2.1.0")

I faced this error:

[warn]  ::::::::::::::::::::::::::::::::::::::::::::::
[warn]  ::          UNRESOLVED DEPENDENCIES         ::
[warn]  ::::::::::::::::::::::::::::::::::::::::::::::
[warn]  :: play#sbt-plugin;2.1.0: not found
[warn]  ::::::::::::::::::::::::::::::::::::::::::::::

I did not find a resolver for this library, otherwise I would've added it and ran sbt update. Note that my resolvers includes http://repo.typesafe.com/typesafe/releases/.

Answer 1

Play 2.2 is out and can be added separately from rest of Play Framework. in build.sbt:

resolvers += "Typesafe Repo" at "http://repo.typesafe.com/typesafe/releases/"

libraryDependencies += "com.typesafe.play" %% "play-json" % "2.2.1"