Regression in Gradle plugin v8.3.0: Cannot set the value of task ':integTest:spotlessJava' property 'taskService'
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Assessment
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Newbie friendliness
- 48/100
- Issue type
- Bug
- Clarity
- Mostly clear
- Activity status
- Quiet
- Tech stack
- java
- Domain
- build-system
Research direction
Start with the linked GitHub Actions run and the multi-project setup described in the issue, focusing on the missing root build.gradle.kts and the integTest project. Compare the failure with the apply-false workaround, then determine whether the plugin behavior or documentation should change. Done means the setup no longer fails without the workaround, or the new requirement is clearly documented.
Written by the indexing model from the issue text.
Description
See https://github.com/tbroyer/gradle-incap-helper/actions/runs/23116714774/job/67143450577?pr=53.
Caused by: java.lang.IllegalArgumentException: Cannot set the value of task ':integTest:spotlessJava' property 'taskService' of type com.diffplug.gradle.spotless.SpotlessTaskService loaded with InstrumentingVisitableURLClassLoader(ClassLoaderScopeIdentifier.Id{coreAndPlugins:settings[:]:buildSrc[:]:root-project[:]:project-integTest(export)}) using a provider of type com.diffplug.gradle.spotless.SpotlessTaskService loaded with InstrumentingVisitableURLClassLoader(ClassLoaderScopeIdentifier.Id{coreAndPlugins:settings[:]:buildSrc[:]:root-project[:]:project-incap(export)}).
This can be caused by a plugin being applied to two sibling projects and then using a shared build service. To fix this, use `@ServiceReference` or add the problematic plugin with `apply false` to the root build script.
This happens in a multi-project build where the root project doesn't have a build.gradle.kts, so the spotless plugin isn't applied on the root project; and indeed adding it with apply false works around the error.
Either this should be documented as a new requirement, or the plugin should use @ServiceReference (if that makes a difference; but then also require Gradle >= 8)
- Dominant language
- Java
- Stars
- 5.7k
- Forks
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- Avg merge
- 1d 13h
- Merged PRs (30d)
- 43
Contributor guide
First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
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