title: How to add unmanaged jars to build.sbt generated by a g8 template?
body: <p>I am working on libgdx/android project in Scala. I have build.sbt generated by libgdx-sbt-project.g8 template. I am trying to add a jar file. Could somebody help me out?
  Here is the code:</p>
  
  <pre><code>lazy val android = common ++ Tasks.natives ++ Seq(
  versionCode := 0,
  keyalias := "change-me",
  platformName := "android-19",
  mainAssetsPath in Compile := file("common/assets"),
  unmanagedJars in Compile &lt;+= (libraryJarPath) (p =&gt; Attributed.blank(p)) map( x=&gt; x),
  libraryDependencies ++= Seq(
    "com.badlogicgames.gdx" % "gdx-backend-android" % "0.9.9",
    "com.badlogicgames.gdx" % "gdx-platform" % "0.9.9" % "natives" classifier "natives-armeabi",
    "com.badlogicgames.gdx" % "gdx-platform" % "0.9.9" % "natives" classifier "natives-armeabi-v7a"
  ),
  nativeExtractions &lt;&lt;= (baseDirectory) { base =&gt; Seq(
    ("natives-armeabi.jar", new ExactFilter("libgdx.so"), base / "lib" / "armeabi"),
    ("natives-armeabi-v7a.jar", new ExactFilter("libgdx.so"), base / "lib" / "armeabi-v7a")
  )})
  </code></pre>
  
  <p>I am new with Scala and SBT. I don't quite understand this syntax:</p>
  
  <pre><code>unmanagedJars in Compile &lt;+= (libraryJarPath) (p =&gt; Attributed.blank(p)) map( x=&gt; x)
  </code></pre>