Product Flavor, Duplicate class, Error while merging dex archives - aspectj

Question

I only get this error after I added the Gradle-AspectJ library (i.e. apply plugin: 'com.archinamon.aspectj' ).
Without flavors, in a new project there is no such issue, everything's just fine.
If you have encountered this problem and have the answer, please let me know. I have spent way too much time on this, tried everything I could think of and found.
Root level build.gradle:
buildscript {
ext.kotlin_version = "1.3.72"
ext.detekt_version = "1.9.1"
repositories {
google()
jcenter()
}
dependencies {
classpath "com.android.tools.build:gradle:4.0.1"
classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
...
classpath "com.archinamon:android-gradle-aspectj:4.2.1"
}
}
...
allprojects {
repositories {
google()
jcenter()
...
flatDir {
dirs 'lib'
}
}
}
...
app/build.gradle:
apply plugin: 'com.android.application'
apply plugin: 'kotlin-android'
apply plugin: 'kotlin-android-extensions'
apply plugin: 'kotlin-kapt'
...
apply plugin: 'com.archinamon.aspectj'
...
android {
compileSdkVersion 29
buildToolsVersion "29.0.3"
defaultConfig {
applicationId ""
minSdkVersion 24
targetSdkVersion 29
...
}
aspectj {
includeAspectsFromJar "SecLib3.3.0"
includeAllJars false
ajcArgs << "-Xlint:ignore"
excludeJar "mpulse", "aspectj"
weaveInfo true
compileTests = false
}
...
compileOptions {
sourceCompatibility JavaVersion.VERSION_1_8
targetCompatibility JavaVersion.VERSION_1_8
}
flavorDimensions "server", "datasource"
productFlavors {
mock {
// Mocked network layer
dimension "datasource"
}
live {
// Real network layer, different URLs based on "server" flavor dimension
dimension "datasource"
}
fat {
dimension "server"
...
}
...
}
/* Removing unused flavor dimension combinations:
- demo and prod mockDebug
*/
variantFilter { variant ->
if (variant.getFlavors().get(0).name != 'fat'
&& variant.getFlavors().get(1).name == 'mock') {
variant.setIgnore(true)
}
}
}
dependencies {
implementation fileTree(include: ['*.jar', '*.aar'], dir: 'libs')
...
// Kotlin
implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version"
// Kotlin KTX
implementation "androidx.core:core-ktx:1.3.0"
// androidx
implementation "androidx.appcompat:appcompat:1.1.0"
implementation "androidx.constraintlayout:constraintlayout:2.0.0-beta7"
implementation "androidx.cardview:cardview:1.0.0"
// Material Components
implementation "com.google.android.material:material:1.2.0-beta01"
...
}
The error I'm getting:
AGPBI: {"kind":"error","text":"Type android.support.v4.app.INotificationSideChannel is defined multiple times: /home/...../app/build/intermediates/project_dex_archive/fatMockDebug/out/android/support/v4/app/INotificationSideChannel.dex, ...../app/build/intermediates/mixed_scope_dex_archive/fatMockDebug/out/android/support/v4/app/INotificationSideChannel.dex","sources":[{"file":"...../app/build/intermediates/project_dex_archive/fatMockDebug/out/android/support/v4/app/INotificationSideChannel.dex"}],"tool":"D8"}
com.android.builder.dexing.DexArchiveMergerException: Error while merging dex archives:
Learn how to resolve the issue at https://developer.android.com/studio/build/dependencies#duplicate_classes.
Type android.support.v4.app.INotificationSideChannel is defined multiple times: ...../app/build/intermediates/project_dex_archive/fatMockDebug/out/android/support/v4/app/INotificationSideChannel.dex, ...../app/build/intermediates/mixed_scope_dex_archive/fatMockDebug/out/android/support/v4/app/INotificationSideChannel.dex
at com.android.builder.dexing.D8DexArchiveMerger.getExceptionToRethrow(D8DexArchiveMerger.java:132)
at com.android.builder.dexing.D8DexArchiveMerger.mergeDexArchives(D8DexArchiveMerger.java:119)
at com.android.build.gradle.internal.transforms.DexMergerTransformCallable.call(DexMergerTransformCallable.java:102)
at com.android.build.gradle.internal.tasks.DexMergingTaskRunnable.run(DexMergingTask.kt:441)
at com.android.build.gradle.internal.tasks.Workers$ActionFacade.run(Workers.kt:242)
at org.gradle.workers.internal.AdapterWorkAction.execute(AdapterWorkAction.java:50)
at org.gradle.workers.internal.DefaultWorkerServer.execute(DefaultWorkerServer.java:50)
at org.gradle.workers.internal.NoIsolationWorkerFactory$1$1.create(NoIsolationWorkerFactory.java:63)
at org.gradle.workers.internal.NoIsolationWorkerFactory$1$1.create(NoIsolationWorkerFactory.java:59)
at org.gradle.internal.classloader.ClassLoaderUtils.executeInClassloader(ClassLoaderUtils.java:98)
at org.gradle.workers.internal.NoIsolationWorkerFactory$1.lambda$execute$0(NoIsolationWorkerFactory.java:59)
at org.gradle.workers.internal.AbstractWorker$1.call(AbstractWorker.java:44)
at org.gradle.workers.internal.AbstractWorker$1.call(AbstractWorker.java:41)
at org.gradle.internal.operations.DefaultBuildOperationExecutor$CallableBuildOperationWorker.execute(DefaultBuildOperationExecutor.java:416)
at org.gradle.internal.operations.DefaultBuildOperationExecutor$CallableBuildOperationWorker.execute(DefaultBuildOperationExecutor.java:406)
at org.gradle.internal.operations.DefaultBuildOperationExecutor$1.execute(DefaultBuildOperationExecutor.java:165)
at org.gradle.internal.operations.DefaultBuildOperationExecutor.execute(DefaultBuildOperationExecutor.java:250)
at org.gradle.internal.operations.DefaultBuildOperationExecutor.execute(DefaultBuildOperationExecutor.java:158)
at org.gradle.internal.operations.DefaultBuildOperationExecutor.call(DefaultBuildOperationExecutor.java:102)
at org.gradle.internal.operations.DelegatingBuildOperationExecutor.call(DelegatingBuildOperationExecutor.java:36)
at org.gradle.workers.internal.AbstractWorker.executeWrappedInBuildOperation(AbstractWorker.java:41)
at org.gradle.workers.internal.NoIsolationWorkerFactory$1.execute(NoIsolationWorkerFactory.java:53)
at org.gradle.workers.internal.DefaultWorkerExecutor.lambda$submitWork$2(DefaultWorkerExecutor.java:200)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at org.gradle.internal.work.DefaultConditionalExecutionQueue$ExecutionRunner.runExecution(DefaultConditionalExecutionQueue.java:215)
at org.gradle.internal.work.DefaultConditionalExecutionQueue$ExecutionRunner.runBatch(DefaultConditionalExecutionQueue.java:164)
at org.gradle.internal.work.DefaultConditionalExecutionQueue$ExecutionRunner.run(DefaultConditionalExecutionQueue.java:131)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at org.gradle.internal.concurrent.ExecutorPolicy$CatchAndRecordFailures.onExecute(ExecutorPolicy.java:64)
at org.gradle.internal.concurrent.ManagedExecutorImpl$1.run(ManagedExecutorImpl.java:48)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
at org.gradle.internal.concurrent.ThreadFactoryImpl$ManagedThreadRunnable.run(ThreadFactoryImpl.java:56)
at java.lang.Thread.run(Thread.java:748)
Caused by: com.android.tools.r8.CompilationFailedException: Compilation failed to complete
at com.android.tools.r8.utils.W.a(:87)
at com.android.tools.r8.D8.run(:11)
at com.android.builder.dexing.D8DexArchiveMerger.mergeDexArchives(D8DexArchiveMerger.java:117)
Caused by: com.android.tools.r8.CompilationFailedException: Compilation failed to complete

Answer 1

I managed to resolve the issue.
The main source of the problem was duplication in dependencies (firebase-core, firebase-crashlytics, firebase-perf). Maybe aspectj has something to do with them?
After removing these three Firebase dependencies the problem seemed to go away.

Answer 2

/app/build/intermediates/mixed_scope_dex_archive/fatMockDebug/out/android/support/v4/app/INotificationSideChannel.dex
Just delete the folder(app) containing the file INotificationSideChannel.dex
The app folder is highlighted with bold letters in the above path
And run the project in the android studio. Now this error does not come.