Gradle plugin error with gradle 8.0 (including workaround)

[simonpoole]

Describe the bug
With gradle 8.0 the task (marathon*AndroidTestGenerateMarathonfile) that generates the marathon file will fail.

Marathon version 0.8.4, AGP 8.1

To Reproduce
Upgrade to gradle 8.0

Expected behavior
I believe Gradle 8.0 isn't supported yet so no expectation that the plugin would work :-)

Logs and reports

> Task :marathonCurrentDebugAndroidTestGenerateMarathonfile FAILED

FAILURE: Build failed with an exception.

* What went wrong:
Execution failed for task ':marathonCurrentDebugAndroidTestGenerateMarathonfile'.
> Cannot access input property 'sdk' of task ':marathonCurrentDebugAndroidTestGenerateMarathonfile'. Accessing unreadable inputs or outputs is not supported. Declare the task as untracked by using Task.doNotTrackState(). See https://docs.gradle.org/8.0/userguide/incremental_build.html#disable-state-tracking for more details.

Devices (please complete the following information):
Not relevant

Additional context

A workaround is to add

afterEvaluate{
   tasks.named('marathonCurrentDebugAndroidTestGenerateMarathonfile') { 
        doNotTrackState('Gradle 8 compatibility hack') 
    }
}

to the build script, replace the task name with the one from your configuration.

Note: outside of this issue, things seem to work just fine on both Linux and WIndows systems.

[Malinskiy]

Thanks for raising this,

I'll work on a fix and add another test case for this here https://github.com/MarathonLabs/marathon/blob/develop/marathon-gradle-plugin/src/test/kotlin/com/malinskiy/marathon/gradle/task/CachingTest.kt#L16

No promises on when it's going to be released though, for now, anyone with this issue should use provided workaround.

Sidenote: I sincerely hope that a fix for this issue will not break existing v7 setups

[simonpoole]

Because of googles minimum SKD/API requirements for the play store essentially all maintained Android apps are going to migrate to AGP 8.1 and as a consequence gradle 8, so v7 is likely going away in any case as a mainstream version.