Merge pull request #2172 from dwijnand/add-MavenRepository.localIfFile

Add localIfFile to MavenRepository, & use it.

ivy/src/main/scala/sbt/ConvertResolver.scala

@@ -120,7 +120,7 @@ private[sbt] object ConvertResolver {
               }
             }
             val resolver = new PluginCapableResolver
-            resolver.setRepository(new LocalIfFileRepo)
+            if (repo.localIfFile) resolver.setRepository(new LocalIfFileRepo)
             initializeMavenStyle(resolver, repo.name, repo.root)
             resolver.setPatterns() // has to be done after initializeMavenStyle, which calls methods that overwrite the patterns
             resolver

ivy/src/main/scala/sbt/Resolver.scala

@@ -33,8 +33,10 @@ sealed case class ChainedResolver(name: String, resolvers: Seq[Resolver]) extend
 
 /** An instance of a remote maven repository.  Note:  This will use Aether/Maven to resolve artifacts. */
 sealed case class MavenRepository(name: String, root: String) extends Resolver {
-  override def toString = name + ": " + root
+  override def toString = s"$name: $root"
   def isCache: Boolean = false
+  def localIfFile: Boolean = true
+  def withLocalIfFile(value: Boolean) = new MavenRepository(name, root) { override def localIfFile = value }
 }
 
 /**
@@ -42,7 +44,7 @@ sealed case class MavenRepository(name: String, root: String) extends Resolver {
  * the metadata is different (see Aether ML discussion).
  */
 final class MavenCache(name: String, val rootFile: File) extends MavenRepository(name, rootFile.toURI.toURL.toString) {
-  override val toString = "cache:" + name + ": " + rootFile.getAbsolutePath
+  override val toString = s"cache:$name: ${rootFile.getAbsolutePath}"
   override def isCache: Boolean = true
 }
 object MavenCache {

notes/0.13.10/add-MavenRepository.localIfFile.markdown

@@ -0,0 +1,13 @@
+
+  [@dwijnand]: http://github.com/dwijnand
+  [2172]: https://github.com/sbt/sbt/pull/2172
+
+### Fixes with compatibility implications
+
+### Improvements
+
+- Adds localIfFile to MavenRepository, to force artifacts to be copied to the cache.
+  [#2172][2172] by [@dwijnand][@dwijnand]
+
+### Bug fixes
+