Android Studio 3 + Gradle 4.0 + shrinkResources + libraryProject = Unable to find a matching configuration in project

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I've problems to migrate my project to the newest Gradle 4.0 + Android Studio 3 version, which gives me all kind of errors. Little by little I managed to sort them all out except this one.

    Could not resolve all dependencies for configuration ':app:forGoogleCoverageRuntimeClasspath'.
   > Unable to find a matching configuration in project :mylibrary:
       - Configuration 'debugApiElements':
           - Required com.android.build.gradle.internal.dependency.AndroidTypeAttr 'AndroidTypeAttr{name=Aar}' and found compatible value 'AndroidTypeAttr{name=Aar}'.
           - Required com.android.build.gradle.internal.dependency.BuildTypeAttr 'BuildTypeAttr{name=coverage}' and found incompatible value 'BuildTypeAttr{name=debug}'.
           - Found com.android.build.gradle.internal.dependency.VariantAttr 'VariantAttr{name=debug}' but wasn't required.
           - Required org.gradle.api.attributes.Usage 'for runtime' and found incompatible value 'for compile'.
           - Required store 'ProductFlavorAttr{name=forGoogle}' but no value provided.
       - Configuration 'debugRuntimeElements':
           - Required com.android.build.gradle.internal.dependency.AndroidTypeAttr 'AndroidTypeAttr{name=Aar}' and found compatible value 'AndroidTypeAttr{name=Aar}'.
           - Required com.android.build.gradle.internal.dependency.BuildTypeAttr 'BuildTypeAttr{name=coverage}' and found incompatible value 'BuildTypeAttr{name=debug}'.
           - Found com.android.build.gradle.internal.dependency.VariantAttr 'VariantAttr{name=debug}' but wasn't required.
           - Required org.gradle.api.attributes.Usage 'for runtime' and found compatible value 'for runtime'.
           - Required store 'ProductFlavorAttr{name=forGoogle}' but no value provided.
       - Configuration 'releaseApiElements':
           - Required com.android.build.gradle.internal.dependency.AndroidTypeAttr 'AndroidTypeAttr{name=Aar}' and found compatible value 'AndroidTypeAttr{name=Aar}'.
           - Required com.android.build.gradle.internal.dependency.BuildTypeAttr 'BuildTypeAttr{name=coverage}' and found incompatible value 'BuildTypeAttr{name=release}'.
           - Found com.android.build.gradle.internal.dependency.VariantAttr 'VariantAttr{name=release}' but wasn't required.
           - Required org.gradle.api.attributes.Usage 'for runtime' and found incompatible value 'for compile'.
           - Required store 'ProductFlavorAttr{name=forGoogle}' but no value provided.
       - Configuration 'releaseRuntimeElements':
           - Required com.android.build.gradle.internal.dependency.AndroidTypeAttr 'AndroidTypeAttr{name=Aar}' and found compatible value 'AndroidTypeAttr{name=Aar}'.
           - Required com.android.build.gradle.internal.dependency.BuildTypeAttr 'BuildTypeAttr{name=coverage}' and found incompatible value 'BuildTypeAttr{name=release}'.
           - Found com.android.build.gradle.internal.dependency.VariantAttr 'VariantAttr{name=release}' but wasn't required.
           - Required org.gradle.api.attributes.Usage 'for runtime' and found compatible value 'for runtime'.
           - Required store 'ProductFlavorAttr{name=forGoogle}' but no value provided.

In order to nail down the problem:

  1. I've created a minimum app project from Android Studios project assistant
  2. added an empty library module which I then add to my app dependencies.
  3. added one flavorDimensions and 2 productFlavors
  4. added 3 build types and let one build type inherit from another
  5. let the inherited build type enable shrinkResources

The last step produces the mentioned error, which is similar to this question: Gradle 4.0 Unable to find a matching configuration

Has anybody an idea what's the matter here or an solution to this problem? I'll file a bug report too.

My complete gradle file:

apply plugin: 'com.android.application'

apply plugin: 'kotlin-android'

android {
    compileSdkVersion 25
    buildToolsVersion "25.0.2"
    defaultConfig {
        applicationId "gradletest.test"
        minSdkVersion 16
        targetSdkVersion 25
        versionCode 1
        versionName "1.0"
        testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
    }

    flavorDimensions "store"

    productFlavors {
        forAmazon {
            dimension "store"
        }

        forGoogle {
            dimension "store"
        }
    }

    buildTypes {

        debug {
            debuggable true
            minifyEnabled false
        }

        release {
            minifyEnabled true
            debuggable false
            shrinkResources true
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
        }

        coverage.initWith(buildTypes.debug)
        coverage {
            testCoverageEnabled true
            minifyEnabled true
            shrinkResources true
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
        }
    }


}

dependencies {
    compile fileTree(dir: 'libs', include: ['*.jar'])
    androidTestCompile('com.android.support.test.espresso:espresso-core:2.2.2', {
        exclude group: 'com.android.support', module: 'support-annotations'
    })
    compile "org.jetbrains.kotlin:kotlin-stdlib-jre7:$kotlin_version"
    compile 'com.android.support:appcompat-v7:25.3.1'
    testCompile 'junit:junit:4.12'
    compile 'com.android.support.constraint:constraint-layout:1.0.2'

    implementation project(':mylibrary')
}
4 Answers

IF your app includes a build type that a library dependency does not.

For example, your app includes a "staging" build type, but a dependency includes only a "debug" and "release" build type.

You will get error like

Unable to resolve dependency for ':app@staging/compileClasspath': Could not resolve project :library. Open File Show Details

You can resolve this error by adding

buildTypes {
        staging {
            proguardFile getDefaultDexGuardFile('dexguard-release.pro')
            proguardFile 'dexguard-rules.pro'
            matchingFallbacks = ['debug', 'release'] //add this line
        }
    }

Resolve build errors related to dependency matching official docs

if you reach here,then my solution is:

    buildTypes {
        release {
            // minifyEnabled false
            // proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
        }

        build {
            //   minifyEnabled false
            //   proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
        }
    }
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