Task dependency error with gradle 9.0.0

[joggeli34]

Describe the bug

When trying to upgrade to gradle 9.0.0, I get following error:

...
> Task :forbiddenApisIntegrationTest
> Task :forbiddenApisMain
> Task :compileNativeTestJava NO-SOURCE
> Task :processNativeTestResources NO-SOURCE
> Task :nativeTestClasses UP-TO-DATE
> Task :forbiddenApisNativeTest NO-SOURCE
> Task :compileQuarkusGeneratedSourcesJava FAILED

[Incubating] Problems report is available at: file:///Users/adrianpauli/qumea/git/portal-backend/build/reports/problems/problems-report.html

Deprecated Gradle features were used in this build, making it incompatible with Gradle 10.

You can use '--warning-mode all' to show the individual deprecation warnings and determine if they come from your own scripts or plugins.

For more on this, please refer to https://docs.gradle.org/9.0.0/userguide/command_line_interface.html#sec:command_line_warnings in the Gradle documentation.
21 actionable tasks: 21 executed

FAILURE: Build failed with an exception.

* What went wrong:
A problem was found with the configuration of task ':compileQuarkusGeneratedSourcesJava' (type 'JavaCompile').
  - Gradle detected a problem with the following location: '...'.
    
    Reason: Task ':compileJava' uses this output of task ':compileQuarkusGeneratedSourcesJava' without declaring an explicit or implicit dependency. This can lead to incorrect results being produced, depending on what order the tasks are executed.
    
    Possible solutions:
      1. Declare task ':compileQuarkusGeneratedSourcesJava' as an input of ':compileJava'.
      2. Declare an explicit dependency on ':compileQuarkusGeneratedSourcesJava' from ':compileJava' using Task#dependsOn.
      3. Declare an explicit dependency on ':compileQuarkusGeneratedSourcesJava' from ':compileJava' using Task#mustRunAfter.
    
    For more information, please refer to https://docs.gradle.org/9.0.0/userguide/validation_problems.html#implicit_dependency in the Gradle documentation.

* Try:
> Declare task ':compileQuarkusGeneratedSourcesJava' as an input of ':compileJava'
> Declare an explicit dependency on ':compileQuarkusGeneratedSourcesJava' from ':compileJava' using Task#dependsOn
> Declare an explicit dependency on ':compileQuarkusGeneratedSourcesJava' from ':compileJava' using Task#mustRunAfter
> Run with --scan to generate a Build Scan (Powered by Develocity).

BUILD FAILED in 35s
09:06:38: Execution finished 'clean build quarkusBuild'.

This happens not in all project, but in about half of our projects. I'm not yet sure what is the difference between this and the other project. Maybe you have a hint were to look so that I can create a reproducer.

Expected behavior

It should build with gradle 9 similar to gradle 8

Actual behavior

Follwoing error occures:

* What went wrong:
A problem was found with the configuration of task ':compileQuarkusGeneratedSourcesJava' (type 'JavaCompile').
  - Gradle detected a problem with the following location: '...'.
    
    Reason: Task ':compileJava' uses this output of task ':compileQuarkusGeneratedSourcesJava' without declaring an explicit or implicit dependency. This can lead to incorrect results being produced, depending on what order the tasks are executed.
    
    Possible solutions:
      1. Declare task ':compileQuarkusGeneratedSourcesJava' as an input of ':compileJava'.
      2. Declare an explicit dependency on ':compileQuarkusGeneratedSourcesJava' from ':compileJava' using Task#dependsOn.
      3. Declare an explicit dependency on ':compileQuarkusGeneratedSourcesJava' from ':compileJava' using Task#mustRunAfter.
    
    For more information, please refer to https://docs.gradle.org/9.0.0/userguide/validation_problems.html#implicit_dependency in the Gradle documentation.

How to Reproduce?

It happens, when I run gradlew build quarkusBuild

Output of uname -a or ver

No response

Output of java -version

21

Quarkus version or git rev

3.25.x & 3.26.0.CR1

Build tool (ie. output of mvnw --version or gradlew --version)

gradlew 9.0.0

Additional information

No response

[quarkus-bot]

/cc @glefloch, @quarkusio/devtools

[quotidian-ennui]

Whilst this is wholly inappropriate as a fix, it's because gradle-9 is evaluating the task execution graph dfferently because reasons (I'm not a gradle dev). This change in 9 is what it has been reporting for a while (you're using tasks that won't work in gradle 9).

• Ours is a multi-module gradle project, some sub-modules are quarkus, some are not...
• We're using convention plugins (so some shared gradle files in buildSrc/xxx).
• In the quarkus convention gradle file I have this :

project.afterEvaluate {
  tasks.named("compileJava") {
    mustRunAfter("compileQuarkusGeneratedSourcesJava")
  }
}

[brianwyka]

Also get similar error...

FAILURE: Build failed with an exception.

* What went wrong:
Some problems were found with the configuration of task ':compileQuarkusGeneratedSourcesJava' (type 'JavaCompile').
  - Gradle detected a problem with the following location: '/source/build/classes/java/quarkus-generated-sources'.
    
    Reason: Task ':spotbugsMain' uses this output of task ':compileQuarkusGeneratedSourcesJava' without declaring an explicit or implicit dependency. This can lead to incorrect results being produced, depending on what order the tasks are executed.
    
    Possible solutions:
      1. Declare task ':compileQuarkusGeneratedSourcesJava' as an input of ':spotbugsMain'.
      2. Declare an explicit dependency on ':compileQuarkusGeneratedSourcesJava' from ':spotbugsMain' using Task#dependsOn.
      3. Declare an explicit dependency on ':compileQuarkusGeneratedSourcesJava' from ':spotbugsMain' using Task#mustRunAfter.
    
    For more information, please refer to https://docs.gradle.org/9.0.0/userguide/validation_problems.html#implicit_dependency in the Gradle documentation.
  - Gradle detected a problem with the following location: '/source/build/classes/java/quarkus-generated-sources'.
    
    Reason: Task ':jacocoTestCoverageVerification' uses this output of task ':compileQuarkusGeneratedSourcesJava' without declaring an explicit or implicit dependency. This can lead to incorrect results being produced, depending on what order the tasks are executed.
    
    Possible solutions:
      1. Declare task ':compileQuarkusGeneratedSourcesJava' as an input of ':jacocoTestCoverageVerification'.
      2. Declare an explicit dependency on ':compileQuarkusGeneratedSourcesJava' from ':jacocoTestCoverageVerification' using Task#dependsOn.
      3. Declare an explicit dependency on ':compileQuarkusGeneratedSourcesJava' from ':jacocoTestCoverageVerification' using Task#mustRunAfter.
    
    For more information, please refer to https://docs.gradle.org/9.0.0/userguide/validation_problems.html#implicit_dependency in the Gradle documentation.
  - Gradle detected a problem with the following location: '/Users/brian.wyka/source/dev/quarkus-template/build/classes/java/quarkus-generated-sources'.
    
    Reason: Task ':compileJava' uses this output of task ':compileQuarkusGeneratedSourcesJava' without declaring an explicit or implicit dependency. This can lead to incorrect results being produced, depending on what order the tasks are executed.
    
    Possible solutions:
      1. Declare task ':compileQuarkusGeneratedSourcesJava' as an input of ':compileJava'.
      2. Declare an explicit dependency on ':compileQuarkusGeneratedSourcesJava' from ':compileJava' using Task#dependsOn.
      3. Declare an explicit dependency on ':compileQuarkusGeneratedSourcesJava' from ':compileJava' using Task#mustRunAfter.
    
    For more information, please refer to https://docs.gradle.org/9.0.0/userguide/validation_problems.html#implicit_dependency in the Gradle documentation.

* Try:
> Declare task ':compileQuarkusGeneratedSourcesJava' as an input of ':spotbugsMain'
> Declare an explicit dependency on ':compileQuarkusGeneratedSourcesJava' from ':spotbugsMain' using Task#dependsOn
> Declare an explicit dependency on ':compileQuarkusGeneratedSourcesJava' from ':spotbugsMain' using Task#mustRunAfter
> Declare task ':compileQuarkusGeneratedSourcesJava' as an input of ':jacocoTestCoverageVerification'
> Declare an explicit dependency on ':compileQuarkusGeneratedSourcesJava' from ':jacocoTestCoverageVerification' using Task#dependsOn
> Declare an explicit dependency on ':compileQuarkusGeneratedSourcesJava' from ':jacocoTestCoverageVerification' using Task#mustRunAfter
> Declare task ':compileQuarkusGeneratedSourcesJava' as an input of ':compileJava'
> Declare an explicit dependency on ':compileQuarkusGeneratedSourcesJava' from ':compileJava' using Task#dependsOn
> Declare an explicit dependency on ':compileQuarkusGeneratedSourcesJava' from ':compileJava' using Task#mustRunAfter
> Run with --scan to generate a Build Scan (Powered by Develocity).

BUILD FAILED in 45s

Itr seems my issues are a result of JaCoCo and Spotbugs in the build, but still have compileJava in there. perhaps some updates to Quarkus gradle plugin and also documentation are required here on what do do with Gradle setup to pass this.

This workaround worked for me...

compileJava {
    dependsOn(compileQuarkusGeneratedSourcesJava)
}
jacocoTestCoverageVerification {
    dependsOn(compileQuarkusGeneratedSourcesJava)
}
spotbugsMain {
    dependsOn(compileQuarkusGeneratedSourcesJava)
}

[aloubyansky]

It's a puzzling one to me personally. We don't register compileQuarkusGeneratedSourcesJava tasks explicitly and they don't seem to do anything, afaics. They probably get registered by Gradle itself for the generated source sets. We'll need to look into how we setup these source sets.
In the meantime, I have this branch https://github.com/aloubyansky/quarkus/tree/generated-sources-compile-tasks where I configure compileJava and compileKotlin as mustRunAfter the compileQuarkusGeneratedSourcesJava tasks.

Given that I couldn't reproduce it so far, in case somebody could give it a try to confirm whether it fixes the issue, it'd be highly appreciated. Thanks!

FYI @reaver585

[mschorsch]

See also #45057 and #38996

[aloubyansky]

Thanks for pointing those out @mschorsch.

[joggeli34]

After upgrading to 3.26.3, I still get this error when runing gradlew build:

> Task :quarkusDependenciesBuild
> Task :quarkusBuild
> Task :assemble
> Task :compileIntegrationTestJava NO-SOURCE
> Task :processIntegrationTestResources NO-SOURCE
> Task :integrationTestClasses UP-TO-DATE
> Task :forbiddenApisIntegrationTest NO-SOURCE
> Task :forbiddenApisMain
> Task :compileNativeTestJava NO-SOURCE
> Task :processNativeTestResources NO-SOURCE
> Task :nativeTestClasses UP-TO-DATE
> Task :forbiddenApisNativeTest NO-SOURCE
> Task :processQuarkusGeneratedSourcesResources NO-SOURCE
> Task :quarkusGeneratedSourcesClasses UP-TO-DATE
> Task :forbiddenApisQuarkusGeneratedSources FAILED
gradle/actions: Writing build results to /runner/actions-runner/_work/_temp/.gradle-actions/build-results/__run_3-1757982807468.json

[Incubating] Problems report is available at: file:///runner/actions-runner/_work/fleetmanager/fleetmanager/build/reports/problems/problems-report.html

FAILURE: Build failed with an exception.

* What went wrong:
A problem was found with the configuration of task ':forbiddenApisQuarkusGeneratedSources' (type 'CheckForbiddenApis').
  - Gradle detected a problem with the following location: '/runner/actions-runner/_work/fleetmanager/fleetmanager/build/classes/java/quarkus-generated-sources'.
    
    Reason: Task ':forbiddenApisQuarkusGeneratedSources' uses this output of task ':quarkusGenerateCode' without declaring an explicit or implicit dependency. This can lead to incorrect results being produced, depending on what order the tasks are executed.
    
25 actionable tasks: 25 executed
    Possible solutions:
      1. Declare task ':quarkusGenerateCode' as an input of ':forbiddenApisQuarkusGeneratedSources'.
      2. Declare an explicit dependency on ':quarkusGenerateCode' from ':forbiddenApisQuarkusGeneratedSources' using Task#dependsOn.
      3. Declare an explicit dependency on ':quarkusGenerateCode' from ':forbiddenApisQuarkusGeneratedSources' using Task#mustRunAfter.
    
    For more information, please refer to https://docs.gradle.org/9.0.0/userguide/validation_problems.html#implicit_dependency in the Gradle documentation.

* Try:
> Declare task ':quarkusGenerateCode' as an input of ':forbiddenApisQuarkusGeneratedSources'
> Declare an explicit dependency on ':quarkusGenerateCode' from ':forbiddenApisQuarkusGeneratedSources' using Task#dependsOn
> Declare an explicit dependency on ':quarkusGenerateCode' from ':forbiddenApisQuarkusGeneratedSources' using Task#mustRunAfter
> Run with --scan to generate a Build Scan (Powered by Develocity).

[joggeli34]

As workaround, it can be fixed by adding:

tasks.withType(de.thetaphi.forbiddenapis.gradle.CheckForbiddenApis).configureEach {
    dependsOn(tasks.named("compileTestJava"))
}