Drop RepackageTask.getDependencies()

Drop `RepackageTask.getDependencies` from the gradle plugin in favor of
exposing `getLibraries()` and using the callback.
Drop getDependencies

spring-boot-tools/spring-boot-gradle-plugin/src/main/groovy/org/springframework/boot/gradle/repackage/RepackagePluginFeatures.java

@@ -17,6 +17,7 @@
 package org.springframework.boot.gradle.repackage;
 
 import java.io.File;
+import java.io.IOException;
 
 import org.gradle.api.Action;
 import org.gradle.api.Project;
@@ -27,6 +28,8 @@ import org.gradle.api.plugins.BasePlugin;
 import org.gradle.api.tasks.bundling.Jar;
 import org.springframework.boot.gradle.PluginFeatures;
 import org.springframework.boot.gradle.SpringBootPluginExtension;
+import org.springframework.boot.loader.tools.LibraryCallback;
+import org.springframework.boot.loader.tools.LibraryScope;
 import org.springframework.util.StringUtils;
 
 /**
@@ -124,11 +127,25 @@ public class RepackagePluginFeatures implements PluginFeatures {
 					+ classifier + "." + StringUtils.getFilenameExtension(outputName);
 			File outputFile = new File(inputFile.getParentFile(), outputName);
 			this.task.getInputs().file(jarTask);
-			this.task.getInputs().file(this.task.getDependencies());
+			addLibraryDependencies(this.task);
 			this.task.getOutputs().file(outputFile);
 			this.task.setOutputFile(outputFile);
 		}
 
+		private void addLibraryDependencies(final RepackageTask task) {
+			try {
+				task.getLibraries().doWithLibraries(new LibraryCallback() {
+					@Override
+					public void library(File file, LibraryScope scope) throws IOException {
+						task.getInputs().file(file);
+					}
+				});
+			}
+			catch (IOException ex) {
+				throw new IllegalStateException(ex);
+			}
+		}
+
 	}
 
 }

spring-boot-tools/spring-boot-gradle-plugin/src/main/groovy/org/springframework/boot/gradle/repackage/RepackageTask.java

@@ -18,8 +18,6 @@ package org.springframework.boot.gradle.repackage;
 
 import java.io.File;
 import java.io.IOException;
-import java.util.ArrayList;
-import java.util.List;
 import java.util.concurrent.TimeUnit;
 
 import org.gradle.api.Action;
@@ -29,8 +27,6 @@ import org.gradle.api.tasks.TaskAction;
 import org.gradle.api.tasks.TaskContainer;
 import org.gradle.api.tasks.bundling.Jar;
 import org.springframework.boot.gradle.SpringBootPluginExtension;
-import org.springframework.boot.loader.tools.LibraryCallback;
-import org.springframework.boot.loader.tools.LibraryScope;
 import org.springframework.boot.loader.tools.Repackager;
 import org.springframework.util.FileCopyUtils;
 
@@ -101,23 +97,7 @@ public class RepackageTask extends DefaultTask {
 		project.getTasks().withType(Jar.class, new RepackageAction(extension, libraries));
 	}
 
-	public File[] getDependencies() {
-		ProjectLibraries libraries = getLibraries();
-		final List<File> files = new ArrayList<File>();
-		try {
-			libraries.doWithLibraries(new LibraryCallback() {
-				@Override
-				public void library(File file, LibraryScope scope) throws IOException {
-					files.add(file);
-				}
-			});
-		} catch (IOException ex) {
-			throw new IllegalStateException("Cannot retrieve dependencies", ex);
-		}
-		return files.toArray(new File[files.size()]);
-	}
-
-	private ProjectLibraries getLibraries() {
+	public ProjectLibraries getLibraries() {
 		Project project = getProject();
 		SpringBootPluginExtension extension = project.getExtensions().getByType(
 				SpringBootPluginExtension.class);