Configuration cache failure in presence of libraries that have no JARs

Expected and Results

When I run a build, I get:

* What went wrong:
Configuration cache state could not be cached: field `provider` of `org.gradle.internal.serialize.codecs.core.ProviderBackedFileCollectionSpec` bean found in field `__jarFiles__` of task `:tapmocCheckClassFileVersions` of type `tapmoc.task.TapmocCheckClassFileVersionsTask`: error writing value of type 'org.gradle.api.internal.provider.DefaultProvider'
> Could not resolve all files for configuration ':tapmocRuntimeDependencies'.
   > No variants of org.codehaus.groovy:groovy-all:3.0.22 match the consumer attributes:
       - Adhoc variant for org.codehaus.groovy:groovy-all:3.0.22:
           - Incompatible because this component declares a component, as well as attribute 'artifactType' with value 'pom' and the consumer needed a component, as well as attribute 'artifactType' with value 'jar'
           - Other compatible attributes:
               - Doesn't say anything about com.android.build.gradle.internal.attributes.VariantAttr (required 'release')
               - Doesn't say anything about its usage (required runtime)

The root cause is that org.codehaus.groovy:groovy-all:3.0.22 does not have a JAR.

Libraries that have no JARs, for example org.codehaus.groovy:groovy-all:3.0.22, should be ignored.

Related environment and versions

• Gradle 9.4.1
• Tapmoc 0.4.2

Reproduction steps

build.gradle.kts:

plugins {
    java
    id("com.gradleup.tapmoc") version "0.4.2"
}

// groovy-all 3.x is a POM-only artifact (no JAR published, only a BOM POM).
// The @pom suffix forces Gradle to resolve it as a POM-type artifact, reproducing
// how dev.gradleplugins:gradle-test-kit:8.11.1 declares it in its Maven POM:
//
//   <dependency>
//     <groupId>org.codehaus.groovy</groupId>
//     <artifactId>groovy-all</artifactId>
//     <version>3.0.22</version>
//     <type>pom</type>         <-- this
//     <scope>runtime</scope>
//   </dependency>
//
// Without @pom, Gradle treats the POM packaging as a BOM import and does not add
// groovy-all itself to the dependency graph. With @pom, Gradle creates an adhoc
// component with a single variant: artifactType=pom.
dependencies {
    runtimeOnly("org.codehaus.groovy:groovy-all:3.0.22@pom")
}

tapmoc {
    java(11)
    // checkDependencies() enables tapmocCheckClassFileVersions.
    // With it: fails at task execution (both with and without --no-configuration-cache).
    // Without it: task is disabled (SKIPPED), but still fails at configuration cache
    //             serialization because Gradle eagerly resolves task inputs.
    checkDependencies()
}

gradle.properties:

org.gradle.configuration-cache=true

Run ./gradlew build and you will get the error.

Anything else?

No response

Start with the reproducer in build.gradle.kts and gradle.properties, then run ./gradlew build with the tapmocCheckClassFileVersions task enabled and the POM-only groovy-all dependency. Trace how that task resolves its inputs and confirm that a dependency with no JAR is ignored without configuration-cache serialization or task-execution failure.