Enable gradle configuration caching for `prepareModulesDir`

[koppor]

Gradle's Configuration Cache speeds up compilation.

• Task createDelegatingModules of type org.beryx.jlink.CreateDelegatingModulesTask: cannot serialize object of type 'org.gradle.api.internal.project.DefaultProject', a subtype of 'org.gradle.api.Project', as these are not supported with the configuration cache.
  See https://docs.gradle.org/8.14.1/userguide/configuration_cache.html#config_cache:requirements:disallowed_types

When using with prepareModulesDir, there is an error:

Try out:

Add following line to gradle.properties:

org.gradle.configuration-cache=true

And run prepareModulesDir

[nlisker]

Using Gradle 9.2.1 and plugin version 3.2.0, running jpackageImage with configuration cache, I get the following errors:

FAILURE: Build completed with 2 failures.

1: Task failed with an exception.
-----------
* What went wrong:
Execution failed for task 'prepareMergedJarsDir'.
> Invocation of 'Task.project' by task 'prepareMergedJarsDir' at execution time is unsupported with the configuration cache.

* Try:
> Run with --stacktrace option to get the stack trace.
> Run with --info or --debug option to get more log output.
> Run with --scan to generate a Build Scan (powered by Develocity).
> Get more help at https://help.gradle.org.
==============================================================================

2: Task failed with an exception.
-----------
* What went wrong:
Configuration cache problems found in this build.

13 problems were found storing the configuration cache, 7 of which seem unique.
- Task `createDelegatingModules` of type `org.beryx.jlink.CreateDelegatingModulesTask`: cannot serialize object of type 'org.gradle.api.internal.project.DefaultProject', a subtype of 'org.gradle.api.Project', as these are not supported with the configuration cache.
  See https://docs.gradle.org/9.2.1/userguide/configuration_cache_requirements.html#config_cache:requirements:disallowed_types
- Task `createMergedModule` of type `org.beryx.jlink.CreateMergedModuleTask`: cannot serialize object of type 'org.gradle.api.internal.project.DefaultProject', a subtype of 'org.gradle.api.Project', as these are not supported with the configuration cache.
  See https://docs.gradle.org/9.2.1/userguide/configuration_cache_requirements.html#config_cache:requirements:disallowed_types
- Task `jlink` of type `org.beryx.jlink.JlinkTask`: cannot serialize object of type 'org.gradle.api.internal.project.DefaultProject', a subtype of 'org.gradle.api.Project', as these are not supported with the configuration cache.
  See https://docs.gradle.org/9.2.1/userguide/configuration_cache_requirements.html#config_cache:requirements:disallowed_types
- Task `jpackageImage` of type `org.beryx.jlink.JPackageImageTask`: cannot serialize object of type 'org.gradle.api.internal.project.DefaultProject', a subtype of 'org.gradle.api.Project', as these are not supported with the configuration cache.
  See https://docs.gradle.org/9.2.1/userguide/configuration_cache_requirements.html#config_cache:requirements:disallowed_types
- Task `prepareMergedJarsDir` of type `org.beryx.jlink.PrepareMergedJarsDirTask`: cannot serialize object of type 'org.gradle.api.internal.project.DefaultProject', a subtype of 'org.gradle.api.Project', as these are not supported with the configuration cache.
  See https://docs.gradle.org/9.2.1/userguide/configuration_cache_requirements.html#config_cache:requirements:disallowed_types
- Task `prepareModulesDir` of type `org.beryx.jlink.PrepareModulesDirTask`: cannot serialize object of type 'org.gradle.api.internal.project.DefaultProject', a subtype of 'org.gradle.api.Project', as these are not supported with the configuration cache.
  See https://docs.gradle.org/9.2.1/userguide/configuration_cache_requirements.html#config_cache:requirements:disallowed_types
- Task `prepareMergedJarsDir` of type `org.beryx.jlink.PrepareMergedJarsDirTask`: invocation of 'Task.project' at execution time is unsupported with the configuration cache.
  See https://docs.gradle.org/9.2.1/userguide/configuration_cache_requirements.html#config_cache:requirements:use_project_during_execution

Hopefully this is more informative as to where and what goes wrong.

Merry Xmas!