Proguard: Could not determine the dependencies of task ':library:transformClassesAndResourcesWithProguardForRelease'

[Nicolas Schneider]

When I want to use the experimental plugin together with proguard, I get an error from gradle: Could not determine the dependencies of task ':library:transformClassesAndResourcesWithProguardForRelease'.

Using the '--info' switch works around this issue and from briefly looking, proguard did obfuscate my library.

Relevant gradle information:

distributionUrl=https\://services.gradle.org/distributions/gradle-2.8-all.zip
com.android.tools.build:gradle-experimental:0.4.0
buildToolsVersion = "23.0.2"
compileSdkVersion = 23
    android.buildTypes {
        release {
            minifyEnabled = true
            proguardFiles.add(file('proguard.cfg'))
        }
    }

Error output:

./gradlew --stacktrace assembleRelease
FAILURE: Build failed with an exception.
* What went wrong:
Could not determine the dependencies of task ':library:transformClassesAndResourcesWithProguardForRelease'.
> java.lang.NullPointerException (no error message)
* Try:
Run with --info or --debug option to get more log output.
* Exception is:
org.gradle.api.GradleException: Could not determine the dependencies of task ':library:transformClassesAndResourcesWithProguardForRelease'.
at org.gradle.api.internal.tasks.CachingTaskDependencyResolveContext.resolve(CachingTaskDependencyResolveContext.java:67)
at org.gradle.api.internal.tasks.CachingTaskDependencyResolveContext.getDependencies(CachingTaskDependencyResolveContext.java:55)
at org.gradle.execution.taskgraph.DefaultTaskExecutionPlan.realizedDependencies(DefaultTaskExecutionPlan.java:181)
at org.gradle.execution.taskgraph.DefaultTaskExecutionPlan.addToTaskGraph(DefaultTaskExecutionPlan.java:138)
at org.gradle.execution.taskgraph.DefaultTaskGraphExecuter.addTasks(DefaultTaskGraphExecuter.java:98)
at org.gradle.execution.TaskNameResolvingBuildConfigurationAction.configure(TaskNameResolvingBuildConfigurationAction.java:47)
at org.gradle.execution.DefaultBuildConfigurationActionExecuter.configure(DefaultBuildConfigurationActionExecuter.java:48)
at org.gradle.execution.DefaultBuildConfigurationActionExecuter.access$000(DefaultBuildConfigurationActionExecuter.java:25)
at org.gradle.execution.DefaultBuildConfigurationActionExecuter$1.proceed(DefaultBuildConfigurationActionExecuter.java:54)
at org.gradle.execution.DefaultTasksBuildExecutionAction.configure(DefaultTasksBuildExecutionAction.java:44)
at org.gradle.execution.DefaultBuildConfigurationActionExecuter.configure(DefaultBuildConfigurationActionExecuter.java:48)
at org.gradle.execution.DefaultBuildConfigurationActionExecuter.access$000(DefaultBuildConfigurationActionExecuter.java:25)
at org.gradle.execution.DefaultBuildConfigurationActionExecuter$1.proceed(DefaultBuildConfigurationActionExecuter.java:54)
at org.gradle.execution.ExcludedTaskFilteringBuildConfigurationAction.configure(ExcludedTaskFilteringBuildConfigurationAction.java:47)
at org.gradle.execution.DefaultBuildConfigurationActionExecuter.configure(DefaultBuildConfigurationActionExecuter.java:48)
at org.gradle.execution.DefaultBuildConfigurationActionExecuter.select(DefaultBuildConfigurationActionExecuter.java:36)
at org.gradle.initialization.DefaultGradleLauncher$3.run(DefaultGradleLauncher.java:143)
at org.gradle.internal.Factories$1.create(Factories.java:22)
at org.gradle.internal.progress.DefaultBuildOperationExecutor.run(DefaultBuildOperationExecutor.java:90)
at org.gradle.internal.progress.DefaultBuildOperationExecutor.run(DefaultBuildOperationExecutor.java:52)
at org.gradle.initialization.DefaultGradleLauncher.doBuildStages(DefaultGradleLauncher.java:140)
at org.gradle.initialization.DefaultGradleLauncher.access$200(DefaultGradleLauncher.java:32)
at org.gradle.initialization.DefaultGradleLauncher$1.create(DefaultGradleLauncher.java:99)
at org.gradle.initialization.DefaultGradleLauncher$1.create(DefaultGradleLauncher.java:93)
at org.gradle.internal.progress.DefaultBuildOperationExecutor.run(DefaultBuildOperationExecutor.java:90)
at org.gradle.internal.progress.DefaultBuildOperationExecutor.run(DefaultBuildOperationExecutor.java:62)
at org.gradle.initialization.DefaultGradleLauncher.doBuild(DefaultGradleLauncher.java:93)
at org.gradle.initialization.DefaultGradleLauncher.run(DefaultGradleLauncher.java:82)
at org.gradle.launcher.exec.InProcessBuildActionExecuter$DefaultBuildController.run(InProcessBuildActionExecuter.java:94)
at org.gradle.tooling.internal.provider.ExecuteBuildActionRunner.run(ExecuteBuildActionRunner.java:28)
at org.gradle.launcher.exec.ChainingBuildActionRunner.run(ChainingBuildActionRunner.java:35)
at org.gradle.launcher.exec.InProcessBuildActionExecuter.execute(InProcessBuildActionExecuter.java:43)
at org.gradle.launcher.exec.InProcessBuildActionExecuter.execute(InProcessBuildActionExecuter.java:28)
at org.gradle.launcher.exec.ContinuousBuildActionExecuter.execute(ContinuousBuildActionExecuter.java:77)
at org.gradle.launcher.exec.ContinuousBuildActionExecuter.execute(ContinuousBuildActionExecuter.java:47)
at org.gradle.launcher.exec.DaemonUsageSuggestingBuildActionExecuter.execute(DaemonUsageSuggestingBuildActionExecuter.java:51)
at org.gradle.launcher.exec.DaemonUsageSuggestingBuildActionExecuter.execute(DaemonUsageSuggestingBuildActionExecuter.java:28)
at org.gradle.launcher.cli.RunBuildAction.run(RunBuildAction.java:43)
at org.gradle.internal.Actions$RunnableActionAdapter.execute(Actions.java:170)
at org.gradle.launcher.cli.CommandLineActionFactory$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)
at org.gradle.wrapper.BootstrapMainStarter.start(BootstrapMainStarter.java:33)
at org.gradle.wrapper.WrapperExecutor.execute(WrapperExecutor.java:130)
at org.gradle.wrapper.GradleWrapperMain.main(GradleWrapperMain.java:48)
Caused by: java.lang.NullPointerException
at com.android.build.gradle.internal.TaskManager$56.get(TaskManager.java:2499)
at com.android.build.gradle.internal.TaskManager$56.get(TaskManager.java:2487)
at com.android.build.gradle.internal.transforms.ProguardConfigurable.getAllConfigurationFiles(ProguardConfigurable.java:41)
at com.android.build.gradle.internal.transforms.ProGuardTransform.getSecondaryFileInputs(ProGuardTransform.java:175)
at com.android.build.gradle.internal.pipeline.TransformTask.getOtherFileInputs(TransformTask.java:68)
at com.android.build.gradle.internal.pipeline.TransformTask_Decorated.getOtherFileInputs(Unknown Source)
at org.gradle.internal.reflect.JavaMethod.invoke(JavaMethod.java:75)
at org.gradle.api.internal.project.taskfactory.AnnotationProcessingTaskFactory$PropertyInfo$4.create(AnnotationProcessingTaskFactory.java:458)
at org.gradle.util.SingleMessageLogger.whileDisabled(SingleMessageLogger.java:166)
at org.gradle.api.internal.project.taskfactory.AnnotationProcessingTaskFactory$PropertyInfo.getValue(AnnotationProcessingTaskFactory.java:456)
at org.gradle.api.internal.project.taskfactory.AnnotationProcessingTaskFactory$Validator$1.call(AnnotationProcessingTaskFactory.java:263)
at org.gradle.api.internal.file.collections.BuildDependenciesOnlyFileCollectionResolveContext.add(BuildDependenciesOnlyFileCollectionResolveContext.java:73)
at org.gradle.api.internal.file.collections.BuildDependenciesOnlyFileCollectionResolveContext.add(BuildDependenciesOnlyFileCollectionResolveContext.java:83)
at org.gradle.api.internal.file.collections.DefaultConfigurableFileCollection.visitContents(DefaultConfigurableFileCollection.java:91)
at org.gradle.api.internal.file.CompositeFileCollection.visitDependencies(CompositeFileCollection.java:148)
at org.gradle.api.internal.file.collections.DefaultConfigurableFileCollection.visitDependencies(DefaultConfigurableFileCollection.java:97)
at org.gradle.api.internal.tasks.CachingTaskDependencyResolveContext$TaskGraphImpl.getNodeValues(CachingTaskDependencyResolveContext.java:88)
at org.gradle.internal.graph.CachingDirectedGraphWalker$GraphWithEmpyEdges.getNodeValues(CachingDirectedGraphWalker.java:202)
at org.gradle.internal.graph.CachingDirectedGraphWalker.doSearch(CachingDirectedGraphWalker.java:112)
at org.gradle.internal.graph.CachingDirectedGraphWalker.findValues(CachingDirectedGraphWalker.java:64)
at org.gradle.api.internal.tasks.CachingTaskDependencyResolveContext.doResolve(CachingTaskDependencyResolveContext.java:76)
at org.gradle.api.internal.tasks.CachingTaskDependencyResolveContext.resolve(CachingTaskDependencyResolveContext.java:65)
... 54 more

BUILD FAILED
Total time: 6.147 secs

[Michal Bendowski]

I filed http://b.android.com/199565, but was unable to reproduce the issue. Can paste the whole build.gradle in the bug? And also try running on gradle 2.10 and plugin 0.6.0-alpha7.

Thanks,

Michal

[Michal Bendowski]

Sorry, http://b.android.com/199628