Gradle plugin 3.0.0 beta 4: "buildTypeMatching has been removed. Use buildTypes.<name>.fallbacks"

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After updating to Gradle plugin 3.0.0 beta 4 our build failed with the following message:

buildTypeMatching has been removed. Use buildTypes.<name>.fallbacks

Our libraries have release and debug buildTypes, but our app has two additional buildTypes: 'releaseWithLogs' and 'debugMinified'.

Snippet of our app Gradle file:

android {
    // ...
    buildTypeMatching 'releaseWithLogs', 'release'
    buildTypeMatching 'debugMinified', 'debug'

    buildTypes {
        debug {
            // ...
        }
        debugMinified {
            // ...
        }
        release {
            // ...
        }
        releaseWithLogs {
            // ...
        }
    }
}
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Xavier Rubio Jansana On

After some investigation, the following announcement has been found: Android Studio 3.0 Beta 4 is now available. There, it mentions:

You now provide fallbacks for missing build types and flavors using matchingFallbacks (which replaces buildTypeMatching and productFlavorMatching). You also provide the default selection and fallbacks for missing dimensions using missingDimensionStrategy (which replaces flavorSelection).

So, our previous app build.gradle gets converted to:

android {
    // ...
    //buildTypeMatching 'releaseWithLogs', 'release' // remove this
    //buildTypeMatching 'debugMinified', 'debug'     // remove this

    buildTypes {
        debug {
            // ...
        }
        debugMinified {
            // ...
            matchingFallbacks = ['debug']    // instead use this
        }
        release {
            // ...
        }
        releaseWithLogs {
            // ...
            matchingFallbacks = ['release']  // instead use this
        }
    }
}

Notice that, instead of saying that buildType releaseWithLogs will also match with release (buildTypeMatching 'releaseWithLogs', 'release'), we specify the match inside the buildType itself. Same for debugMinified matching debug. Also notice that there's no need to include this in release and debug buildTypes, as they already match.