Variant selection with multiple values

Hi,
I have a multi-project with 1 subproject depending on other subprojects and external dependencies. These subprojects can be java libraries or Android libraries. I need to search for files in all the dependencies. When I try to get the classpath with project.configurations.debugRuntimeClasspath.each { ... } I get the following error:

Execution failed for task ':Wearable:processMicroejConstants'.
> Could not resolve all files for configuration ':Wearable:debugRuntimeClasspath'.
   > The consumer was configured to find a runtime of a component, preferably optimized for Android, as well as attribute 'com.android.build.api.attributes.BuildTypeAttr' with value 'debug', attribute 'com.android.build.api.attributes.AgpVersionAttr' with value '7.1.3'. However we cannot choose between the following variants of project :watchfacehelper:
       - Configuration ':watchfacehelper:debugRuntimeElements' variant android-aar-metadata declares a runtime of a component, as well as attribute 'com.android.build.api.attributes.AgpVersionAttr' with value '7.1.3', attribute 'com.android.build.api.attributes.BuildTypeAttr' with value 'debug':
           - Unmatched attributes:
               - Provides attribute 'artifactType' with value 'android-aar-metadata' but the consumer didn't ask for it
               - Provides attribute 'com.android.build.gradle.internal.attributes.VariantAttr' with value 'debug' but the consumer didn't ask for it
               - Doesn't say anything about its target Java environment (preferred optimized for Android)
       - Configuration ':watchfacehelper:debugRuntimeElements' variant android-art-profile declares a runtime of a component, as well as attribute 'com.android.build.api.attributes.AgpVersionAttr' with value '7.1.3', attribute 'com.android.build.api.attributes.BuildTypeAttr' with value 'debug':
           - Unmatched attributes:
               - Provides attribute 'artifactType' with value 'android-art-profile' but the consumer didn't ask for it
               - Provides attribute 'com.android.build.gradle.internal.attributes.VariantAttr' with value 'debug' but the consumer didn't ask for it
               - Doesn't say anything about its target Java environment (preferred optimized for Android)
       - Configuration ':watchfacehelper:debugRuntimeElements' variant android-assets declares a runtime of a component, as well as attribute 'com.android.build.api.attributes.AgpVersionAttr' with value '7.1.3', attribute 'com.android.build.api.attributes.BuildTypeAttr' with value 'debug':
           - Unmatched attributes:
               - Provides attribute 'artifactType' with value 'android-assets' but the consumer didn't ask for it
               - Provides attribute 'com.android.build.gradle.internal.attributes.VariantAttr' with value 'debug' but the consumer didn't ask for it
               - Doesn't say anything about its target Java environment (preferred optimized for Android)
       - Configuration ':watchfacehelper:debugRuntimeElements' variant android-classes-directory-Aorg.gradle.libraryelements=classes declares a runtime of a component, as well as attribute 'com.android.build.api.attributes.AgpVersionAttr' with value '7.1.3', attribute 'com.android.build.api.attributes.BuildTypeAttr' with value 'debug':
           - Unmatched attributes:
               - Provides attribute 'artifactType' with value 'android-classes-directory' but the consumer didn't ask for it
               - Provides attribute 'com.android.build.gradle.internal.attributes.VariantAttr' with value 'debug' but the consumer didn't ask for it
               - Doesn't say anything about its target Java environment (preferred optimized for Android)
               - Provides its elements preferably in the form of class files but the consumer didn't ask for it
       - Configuration ':watchfacehelper:debugRuntimeElements' variant android-classes-jar declares a runtime of a component, as well as attribute 'com.android.build.api.attributes.AgpVersionAttr' with value '7.1.3', attribute 'com.android.build.api.attributes.BuildTypeAttr' with value 'debug':
           - Unmatched attributes:
               - Provides attribute 'artifactType' with value 'android-classes-jar' but the consumer didn't ask for it
               - Provides attribute 'com.android.build.gradle.internal.attributes.VariantAttr' with value 'debug' but the consumer didn't ask for it
               - Doesn't say anything about its target Java environment (preferred optimized for Android)
               - Provides its elements packaged as a jar but the consumer didn't ask for it
       - Configuration ':watchfacehelper:debugRuntimeElements' variant android-compiled-dependencies-resources declares a runtime of a component, as well as attribute 'com.android.build.api.attributes.AgpVersionAttr' with value '7.1.3', attribute 'com.android.build.api.attributes.BuildTypeAttr' with value 'debug':
           - Unmatched attributes:
               - Provides attribute 'artifactType' with value 'android-compiled-dependencies-resources' but the consumer didn't ask for it
               - Provides attribute 'com.android.build.gradle.internal.attributes.VariantAttr' with value 'debug' but the consumer didn't ask for it
               - Doesn't say anything about its target Java environment (preferred optimized for Android)
       - Configuration ':watchfacehelper:debugRuntimeElements' variant android-consumer-proguard-rules declares a runtime of a component, as well as attribute 'com.android.build.api.attributes.AgpVersionAttr' with value '7.1.3', attribute 'com.android.build.api.attributes.BuildTypeAttr' with value 'debug':
           - Unmatched attributes:
               - Provides attribute 'artifactType' with value 'android-consumer-proguard-rules' but the consumer didn't ask for it
               - Provides attribute 'com.android.build.gradle.internal.attributes.VariantAttr' with value 'debug' but the consumer didn't ask for it
               - Doesn't say anything about its target Java environment (preferred optimized for Android)
       - Configuration ':watchfacehelper:debugRuntimeElements' variant android-java-res declares a runtime of a component, as well as attribute 'com.android.build.api.attributes.AgpVersionAttr' with value '7.1.3', attribute 'com.android.build.api.attributes.BuildTypeAttr' with value 'debug':
           - Unmatched attributes:
               - Provides attribute 'artifactType' with value 'android-java-res' but the consumer didn't ask for it
               - Provides attribute 'com.android.build.gradle.internal.attributes.VariantAttr' with value 'debug' but the consumer didn't ask for it
               - Doesn't say anything about its target Java environment (preferred optimized for Android)
               - Provides its elements packaged as a jar but the consumer didn't ask for it
       - Configuration ':watchfacehelper:debugRuntimeElements' variant android-jni declares a runtime of a component, as well as attribute 'com.android.build.api.attributes.AgpVersionAttr' with value '7.1.3', attribute 'com.android.build.api.attributes.BuildTypeAttr' with value 'debug':
           - Unmatched attributes:
               - Provides attribute 'artifactType' with value 'android-jni' but the consumer didn't ask for it
               - Provides attribute 'com.android.build.gradle.internal.attributes.VariantAttr' with value 'debug' but the consumer didn't ask for it
               - Doesn't say anything about its target Java environment (preferred optimized for Android)
       - Configuration ':watchfacehelper:debugRuntimeElements' variant android-lint declares a runtime of a component, as well as attribute 'com.android.build.api.attributes.AgpVersionAttr' with value '7.1.3', attribute 'com.android.build.api.attributes.BuildTypeAttr' with value 'debug':
           - Unmatched attributes:
               - Provides attribute 'artifactType' with value 'android-lint' but the consumer didn't ask for it
               - Provides attribute 'com.android.build.gradle.internal.attributes.VariantAttr' with value 'debug' but the consumer didn't ask for it
               - Doesn't say anything about its target Java environment (preferred optimized for Android)
               - Provides its elements packaged as a jar but the consumer didn't ask for it
       - Configuration ':watchfacehelper:debugRuntimeElements' variant android-lint-local-aar declares a runtime of a component, as well as attribute 'com.android.build.api.attributes.AgpVersionAttr' with value '7.1.3', attribute 'com.android.build.api.attributes.BuildTypeAttr' with value 'debug':
           - Unmatched attributes:
               - Provides attribute 'artifactType' with value 'android-lint-local-aar' but the consumer didn't ask for it
               - Provides attribute 'com.android.build.gradle.internal.attributes.VariantAttr' with value 'debug' but the consumer didn't ask for it
               - Doesn't say anything about its target Java environment (preferred optimized for Android)
       - Configuration ':watchfacehelper:debugRuntimeElements' variant android-lint-model-metadata declares a runtime of a component, as well as attribute 'com.android.build.api.attributes.AgpVersionAttr' with value '7.1.3', attribute 'com.android.build.api.attributes.BuildTypeAttr' with value 'debug':
           - Unmatched attributes:
               - Provides attribute 'artifactType' with value 'android-lint-model-metadata' but the consumer didn't ask for it
               - Provides attribute 'com.android.build.gradle.internal.attributes.VariantAttr' with value 'debug' but the consumer didn't ask for it
               - Doesn't say anything about its target Java environment (preferred optimized for Android)
       - Configuration ':watchfacehelper:debugRuntimeElements' variant android-lint-variant-dependencies-model declares a runtime of a component, as well as attribute 'com.android.build.api.attributes.AgpVersionAttr' with value '7.1.3', attribute 'com.android.build.api.attributes.BuildTypeAttr' with value 'debug':
           - Unmatched attributes:
               - Provides attribute 'artifactType' with value 'android-lint-variant-dependencies-model' but the consumer didn't ask for it
               - Provides attribute 'com.android.build.gradle.internal.attributes.VariantAttr' with value 'debug' but the consumer didn't ask for it
               - Doesn't say anything about its target Java environment (preferred optimized for Android)
       - Configuration ':watchfacehelper:debugRuntimeElements' variant android-lint-variant-dependencies-partial-results declares a runtime of a component, as well as attribute 'com.android.build.api.attributes.AgpVersionAttr' with value '7.1.3', attribute 'com.android.build.api.attributes.BuildTypeAttr' with value 'debug':
           - Unmatched attributes:
               - Provides attribute 'artifactType' with value 'android-lint-variant-dependencies-partial-results' but the consumer didn't ask for it
               - Provides attribute 'com.android.build.gradle.internal.attributes.VariantAttr' with value 'debug' but the consumer didn't ask for it
               - Doesn't say anything about its target Java environment (preferred optimized for Android)
       - Configuration ':watchfacehelper:debugRuntimeElements' variant android-manifest declares a runtime of a component, as well as attribute 'com.android.build.api.attributes.AgpVersionAttr' with value '7.1.3', attribute 'com.android.build.api.attributes.BuildTypeAttr' with value 'debug':
           - Unmatched attributes:
               - Provides attribute 'artifactType' with value 'android-manifest' but the consumer didn't ask for it
               - Provides attribute 'com.android.build.gradle.internal.attributes.VariantAttr' with value 'debug' but the consumer didn't ask for it
               - Doesn't say anything about its target Java environment (preferred optimized for Android)
       - Configuration ':watchfacehelper:debugRuntimeElements' variant android-navigation-json declares a runtime of a component, as well as attribute 'com.android.build.api.attributes.AgpVersionAttr' with value '7.1.3', attribute 'com.android.build.api.attributes.BuildTypeAttr' with value 'debug':
           - Unmatched attributes:
               - Provides attribute 'artifactType' with value 'android-navigation-json' but the consumer didn't ask for it
               - Provides attribute 'com.android.build.gradle.internal.attributes.VariantAttr' with value 'debug' but the consumer didn't ask for it
               - Doesn't say anything about its target Java environment (preferred optimized for Android)
       - Configuration ':watchfacehelper:debugRuntimeElements' variant android-public-res declares a runtime of a component, as well as attribute 'com.android.build.api.attributes.AgpVersionAttr' with value '7.1.3', attribute 'com.android.build.api.attributes.BuildTypeAttr' with value 'debug':
           - Unmatched attributes:
               - Provides attribute 'artifactType' with value 'android-public-res' but the consumer didn't ask for it
               - Provides attribute 'com.android.build.gradle.internal.attributes.VariantAttr' with value 'debug' but the consumer didn't ask for it
               - Doesn't say anything about its target Java environment (preferred optimized for Android)
       - Configuration ':watchfacehelper:debugRuntimeElements' variant android-res declares a runtime of a component, as well as attribute 'com.android.build.api.attributes.AgpVersionAttr' with value '7.1.3', attribute 'com.android.build.api.attributes.BuildTypeAttr' with value 'debug':
           - Unmatched attributes:
               - Provides attribute 'artifactType' with value 'android-res' but the consumer didn't ask for it
               - Provides attribute 'com.android.build.gradle.internal.attributes.VariantAttr' with value 'debug' but the consumer didn't ask for it
               - Doesn't say anything about its target Java environment (preferred optimized for Android)
       - Configuration ':watchfacehelper:debugRuntimeElements' variant android-symbol declares a runtime of a component, as well as attribute 'com.android.build.api.attributes.AgpVersionAttr' with value '7.1.3', attribute 'com.android.build.api.attributes.BuildTypeAttr' with value 'debug':
           - Unmatched attributes:
               - Provides attribute 'artifactType' with value 'android-symbol' but the consumer didn't ask for it
               - Provides attribute 'com.android.build.gradle.internal.attributes.VariantAttr' with value 'debug' but the consumer didn't ask for it
               - Doesn't say anything about its target Java environment (preferred optimized for Android)
       - Configuration ':watchfacehelper:debugRuntimeElements' variant android-symbol-with-package-name declares a runtime of a component, as well as attribute 'com.android.build.api.attributes.AgpVersionAttr' with value '7.1.3', attribute 'com.android.build.api.attributes.BuildTypeAttr' with value 'debug':
           - Unmatched attributes:
               - Provides attribute 'artifactType' with value 'android-symbol-with-package-name' but the consumer didn't ask for it
               - Provides attribute 'com.android.build.gradle.internal.attributes.VariantAttr' with value 'debug' but the consumer didn't ask for it
               - Doesn't say anything about its target Java environment (preferred optimized for Android)
       - Configuration ':watchfacehelper:debugRuntimeElements' variant jar declares a runtime of a component, as well as attribute 'com.android.build.api.attributes.AgpVersionAttr' with value '7.1.3', attribute 'com.android.build.api.attributes.BuildTypeAttr' with value 'debug':
           - Unmatched attributes:
               - Provides attribute 'artifactType' with value 'jar' but the consumer didn't ask for it
               - Provides attribute 'com.android.build.gradle.internal.attributes.VariantAttr' with value 'debug' but the consumer didn't ask for it
               - Doesn't say anything about its target Java environment (preferred optimized for Android)
               - Provides its elements packaged as a jar but the consumer didn't ask for it

It seems there is no default fallback for Android Library, so the artifactType attribute must be defined explicitly. But if I use the artifactType attribute (for example to android-classes-jar), it fails for other dependencies types which do not have this variant.

Is there a way to define multiple values for an attribute for variant selection?
In the case it is not possible, is there a way to get the artifacts of a configuration and excluding the dependencies having a given plugin (com.android.library)?