I have the following modules inside my project for which I cannot get Gradle to merge the Android manifests properly:
myproject_alpha
myproject_beta
myprojec
Declare the header of your manifest as follows:
Then, use one of the following appropriate attributes on any activity, activity-alias, service, receiver, or provider element that you want to merge:
tools:merge="override"
tools:merge="remove"
This info was gleaned from:
https://android.googlesource.com/platform/tools/base/+/idea133/build-system/manifest-merger/src/main/java/com/android/manifmerger/ManifestMerger.java