Following the README yields "there is no initScript configured" from gradle task execution

[blaines]

https://github.com/jruby-gradle/jruby-gradle-jar-plugin#executable-jar-controlling-the-ruby-entry-point-script

Stacktrace:

runUserAcceptanceTests task with environment: development
Snapshot Version: 1.0.0-SNAPSHOT
:compileJava UP-TO-DATE
:processResources UP-TO-DATE
:classes UP-TO-DATE
:jrubyPrepareGems UP-TO-DATE
:jrubyPrepareJars UP-TO-DATE
:jrubyPrepare UP-TO-DATE
:shadowJar

FAILURE: Build failed with an exception.

* What went wrong:
there is no initScript configured

* Try:
Run with --info or --debug option to get more log output.

* Exception is:
org.gradle.api.tasks.StopExecutionException: there is no initScript configured
    at com.github.jrubygradle.jar.JRubyJarConfigurator.applyConfig(JRubyJarConfigurator.groovy:164)
    at com.github.jrubygradle.jar.JRubyJarConfigurator.this$dist$invoke$1(JRubyJarConfigurator.groovy)
    at com.github.jrubygradle.jar.JRubyJarConfigurator$1.methodMissing(JRubyJarConfigurator.groovy)
    at com.github.jrubygradle.jar.JRubyJarConfigurator$1.beforeExecute(JRubyJarConfigurator.groovy:215)
    at org.gradle.messaging.dispatch.ReflectionDispatch.dispatch(ReflectionDispatch.java:35)
    at org.gradle.messaging.dispatch.ReflectionDispatch.dispatch(ReflectionDispatch.java:24)
    at org.gradle.listener.BroadcastDispatch.dispatch(BroadcastDispatch.java:83)
    at org.gradle.listener.BroadcastDispatch.dispatch(BroadcastDispatch.java:31)
    at org.gradle.messaging.dispatch.ProxyDispatchAdapter$DispatchingInvocationHandler.invoke(ProxyDispatchAdapter.java:93)
    at com.sun.proxy.$Proxy10.beforeExecute(Unknown Source)
    at org.gradle.execution.taskgraph.AbstractTaskPlanExecutor$TaskExecutorWorker.executeTask(AbstractTaskPlanExecutor.java:76)
    at org.gradle.execution.taskgraph.AbstractTaskPlanExecutor$TaskExecutorWorker.processTask(AbstractTaskPlanExecutor.java:63)
    at org.gradle.execution.taskgraph.AbstractTaskPlanExecutor$TaskExecutorWorker.run(AbstractTaskPlanExecutor.java:51)
    at org.gradle.execution.taskgraph.DefaultTaskPlanExecutor.process(DefaultTaskPlanExecutor.java:23)
    at org.gradle.execution.taskgraph.DefaultTaskGraphExecuter.execute(DefaultTaskGraphExecuter.java:88)
    at org.gradle.execution.SelectedTaskExecutionAction.execute(SelectedTaskExecutionAction.java:29)
    at org.gradle.execution.DefaultBuildExecuter.execute(DefaultBuildExecuter.java:62)
    at org.gradle.execution.DefaultBuildExecuter.access$200(DefaultBuildExecuter.java:23)
    at org.gradle.execution.DefaultBuildExecuter$2.proceed(DefaultBuildExecuter.java:68)
    at org.gradle.execution.DryRunBuildExecutionAction.execute(DryRunBuildExecutionAction.java:32)
    at org.gradle.execution.DefaultBuildExecuter.execute(DefaultBuildExecuter.java:62)
    at org.gradle.execution.DefaultBuildExecuter.execute(DefaultBuildExecuter.java:55)
    at org.gradle.initialization.DefaultGradleLauncher.doBuildStages(DefaultGradleLauncher.java:149)
    at org.gradle.initialization.DefaultGradleLauncher.doBuild(DefaultGradleLauncher.java:106)
    at org.gradle.initialization.DefaultGradleLauncher.run(DefaultGradleLauncher.java:86)
    at org.gradle.launcher.exec.InProcessBuildActionExecuter$DefaultBuildController.run(InProcessBuildActionExecuter.java:80)
    at org.gradle.launcher.cli.ExecuteBuildAction.run(ExecuteBuildAction.java:33)
    at org.gradle.launcher.cli.ExecuteBuildAction.run(ExecuteBuildAction.java:24)
    at org.gradle.launcher.exec.InProcessBuildActionExecuter.execute(InProcessBuildActionExecuter.java:36)
    at org.gradle.launcher.exec.InProcessBuildActionExecuter.execute(InProcessBuildActionExecuter.java:26)
    at org.gradle.launcher.cli.RunBuildAction.run(RunBuildAction.java:51)
    at org.gradle.internal.Actions$RunnableActionAdapter.execute(Actions.java:171)
    at org.gradle.launcher.cli.CommandLineActionFactory$ParseAndBuildAction.execute(CommandLineActionFactory.java:237)
    at org.gradle.launcher.cli.CommandLineActionFactory$ParseAndBuildAction.execute(CommandLineActionFactory.java:210)
    at org.gradle.launcher.cli.JavaRuntimeValidationAction.execute(JavaRuntimeValidationAction.java:35)
    at org.gradle.launcher.cli.JavaRuntimeValidationAction.execute(JavaRuntimeValidationAction.java:24)
    at org.gradle.launcher.cli.CommandLineActionFactory$WithLogging.execute(CommandLineActionFactory.java:206)
    at org.gradle.launcher.cli.CommandLineActionFactory$WithLogging.execute(CommandLineActionFactory.java:169)
    at org.gradle.launcher.cli.ExceptionReportingAction.execute(ExceptionReportingAction.java:33)
    at org.gradle.launcher.cli.ExceptionReportingAction.execute(ExceptionReportingAction.java:22)
    at org.gradle.launcher.Main.doAction(Main.java:33)
    at org.gradle.launcher.bootstrap.EntryPoint.run(EntryPoint.java:45)
    at org.gradle.launcher.bootstrap.ProcessBootstrap.runNoExit(ProcessBootstrap.java:54)
    at org.gradle.launcher.bootstrap.ProcessBootstrap.run(ProcessBootstrap.java:35)
    at org.gradle.launcher.GradleMain.main(GradleMain.java:23)

build.gradle

buildscript {
  repositories {
    jcenter()
  }
  dependencies {
    classpath "com.github.jruby-gradle:jruby-gradle-plugin:0.1.17"
    classpath "com.github.jengelman.gradle.plugins:shadow:1.2.1"
    classpath "com.github.jruby-gradle:jruby-gradle-jar-plugin:0.2.1"
    classpath "org.ajoberstar:gradle-git:0.13.0"
  }
}

jrubyJar {
    jruby {
        initScript "bin/my-executable"
    }
}

Environment Details:

> gradle --version

------------------------------------------------------------
Gradle 2.2.1
------------------------------------------------------------

Build time:   2014-11-24 09:45:35 UTC
Build number: none
Revision:     6fcb59c06f43a4e6b1bcb401f7686a8601a1fb4a

Groovy:       2.3.6
Ant:          Apache Ant(TM) version 1.9.3 compiled on December 23 2013
JVM:          1.8.0_05 (Oracle Corporation 25.5-b02)
OS:           Mac OS X 10.9.5 x86_64

> java -version
java version "1.8.0_05"
Java(TM) SE Runtime Environment (build 1.8.0_05-b13)
Java HotSpot(TM) 64-Bit Server VM (build 25.5-b02, mixed mode)

[rtyler]

@blaines in your case is bin/my-executable a Ruby binstub provided by a gem, or is it something actually in ${projectDir}/bin/my-executable?

[mkristian]

@blaines you are building a shadowJar not the jrubyJar. the jrubyJar has initScript but I do not see any configuration for a shadowJar