Single flavor module based on multi flavor library in Gradle

Question

I'm working on a multi-flavor app. (gradle files below)

It uses a library called tracker that follow the same flavors internal and external

Now for the tricky part, come a new module called feature, this one has no flavor but it needs the tracker as dependency

app.gradle:

android {

    buildTypes {
        debug {
        }
        release {
        }
    }

    flavorDimensions "target"

    productFlavors {
        internal {
            dimension "target"
        }

        external {
            dimension "target"
        }
    }
}

tracker.gradle:

android {

    publishNonDefault true

    buildTypes {
        release {
        }
        debug {
        }
    }

    flavorDimensions 'target'

     productFlavors {
        internal {
            dimension "target"
        }

        external {
            dimension "target"
        }
    }
}

feature.gradle:

android {
    compileSdkVersion rootProject.ext.compileSdkVersion

    defaultConfig {
        compileSdkVersion rootProject.ext.compileSdkVersion
        buildToolsVersion rootProject.ext.buildToolsVersion

        defaultConfig {
            minSdkVersion rootProject.ext.minSdkVersion
            targetSdkVersion rootProject.ext.targetSdkVersion
            versionCode 1
            versionName "1.0"
            javaCompileOptions {
                annotationProcessorOptions {
                    includeCompileClasspath false
                }
            }
        }
    }

}

dependencies {
    implementation(
            [...]
            project(':tracker')
    )
}

Here are the errors when I try to gradle sync:

Unable to resolve dependency for ':feature@debug/compileClasspath': Could not resolve project :tracker.

Could not resolve project :tracker.
Required by:
    project :feature
 > Project :feature declares a dependency from configuration 'implementation' to configuration 'externalRelease' which is not declared in the descriptor for project :tracker.

Unable to resolve dependency for ':feature@debugAndroidTest/compileClasspath': Could not resolve project :tracker.

Could not resolve project :tracker.
[...]

Answer 1

My gradle version is 4.4.

In doc, Android developer and Android Plugin DSL Reference show that, should add follow code.

missingDimensionStrategy 'external'
missingDimensionStrategy 'target'

Android developer link image

Android Plugin DSL Reference image

but it not work for me. Finally I add follow code in feature.gradle.

flavorDimensions 'target'

 productFlavors {
    internal {
        dimension "target"
    }
}