Create jrubyJar configuration if it does not exist

Author: ysb33r

jar-plugin/src/main/groovy/com/github/jrubygradle/jar/JRubyJar.groovy

@@ -19,7 +19,7 @@ import com.github.jengelman.gradle.plugins.shadow.internal.ZipCompressor
 import com.github.jengelman.gradle.plugins.shadow.internal.DefaultZipCompressor
 
 /**
- * JRubyJar creates a Java ARchive with Ruby code packed inside of it.
+ * JRubyJar creates a Java Archive with Ruby code packed inside of it.
  *
  * The most common use-case is when packing a self-contained executable jar
  * which would contain your application code, the JRuby runtime and a launcher
@@ -67,7 +67,7 @@ class JRubyJar extends Jar {
     void jrubyVersion(String version) {
         logger.info("setting jrubyVersion to ${version} from ${embeddedJRubyVersion}")
         embeddedJRubyVersion = version
-        addEmbeddedDependencies(project.configurations.maybeCreate(configuration))
+        addEmbeddedDependencies(project.configurations.maybeCreate(configuration)) // TODO <-- Should not be creating a configuration at this stage
     }
 
     /**

jar-plugin/src/main/groovy/com/github/jrubygradle/jar/JRubyJarPlugin.groovy

@@ -6,6 +6,8 @@ import org.gradle.api.Project
 import org.gradle.api.Task
 import org.gradle.api.tasks.testing.Test
 
+import static com.github.jrubygradle.jar.JRubyJar.DEFAULT_JRUBYJAR_CONFIG
+
 /**
  * @author Schalk W. Cronjé
  * @author Christian Meier
@@ -16,6 +18,7 @@ class JRubyJarPlugin implements Plugin<Project> {
     void apply(Project project) {
         project.apply plugin: 'com.github.jruby-gradle.base'
         project.apply plugin: 'java-base'
+        project.configurations.maybeCreate(DEFAULT_JRUBYJAR_CONFIG)
         project.tasks.create('jrubyJar', JRubyJar)
 
         updateTestTask(project)
@@ -35,7 +38,7 @@ class JRubyJarPlugin implements Plugin<Project> {
             if ((task instanceof JRubyJar) && (task.scriptName != JRubyJar.Type.LIBRARY)) {
                 if (isJRubyVersionDeprecated(task.jrubyVersion)) {
                     project.logger.warn('The task `{}` is using JRuby {} which may cause unexpected behavior, see <http://jruby-gradle.org/errors/jar-deprecated-jrubyversion> for more',
-                        task.name, task.jrubyVersion)
+                            task.name, task.jrubyVersion)
                 }
             }
         }
@@ -60,8 +63,8 @@ class JRubyJarPlugin implements Plugin<Project> {
         // will be writing tests that includes jruby and that they might need some
         // GEMs as part of the tests.
         Closure testConfiguration = { Task t ->
-            environment GEM_HOME : project.jruby.gemInstallDir
-            environment JARS_HOME : project.jruby.jarInstallDir
+            environment GEM_HOME: project.jruby.gemInstallDir
+            environment JARS_HOME: project.jruby.jarInstallDir
             dependsOn 'jrubyPrepare'
         }