IssueTracker

Kotlin build team reported a flaky test failure in tests that use data binding and Kapt:

Caused by: org.gradle.api.internal.provider.MissingValueException: Cannot query the value of this provider because it has no value available.	
	at org.gradle.api.internal.provider.AbstractMinimalProvider.calculateOwnPresentValue(AbstractMinimalProvider.java:82)	
	at org.gradle.api.internal.provider.AbstractMinimalProvider.get(AbstractMinimalProvider.java:100)	
	at com.android.build.gradle.internal.tasks.databinding.DataBindingCompilerArguments.asArguments(DataBindingCompilerArguments.kt:166)	
	at org.jetbrains.kotlin.gradle.internal.KaptWithoutKotlincTask.getAnnotationProcessorOptions(KaptWithoutKotlincTask.kt:87)	
	at org.jetbrains.kotlin.gradle.internal.KaptWithoutKotlincTask.compile(KaptWithoutKotlincTask.kt:141)

The location DataBindingCompilerArguments.kt:166 points to:

override fun asArguments(): Iterable<String> {
    val arguments = CompilerArguments(
        ...
        apiFile = apiVersionsFile.get().asFile, // Line 166 in the tested AGP version (AGP 8.3)
        ...
    ).toMap()

where apiVersionsFile is defined as:

    @get:InputFiles
    @get:PathSensitive(PathSensitivity.NONE)
    @get:Optional
    val apiVersionsFile: Provider<RegularFile>,

To fix this issue, we probably need to change apiVersionsFile.get().asFile to apiVersionsFile.orNull?.asFile because apiVersionsFile is an @Optional input (can be null).

(Potentially related: Issue 196847367)