What does the Message "relying on packaging to define the extension of the main artifact is deprecated" mean?

Question

my gradle build outputs the message

Deprecated: relying on packaging to define the extension of the main artifact is deprecated, and will not be supported in a future version of Gradle.

What does this mean and how to make the warning go away?

Answer 1

How to solve this issue is discussed there: http://forums.gradle.org/gradle/topics/jhuxhorn_googlemail_com-zal6c

For now, no solution, the warning is said to be 'bugged'.

Answer 2

It seems there is currently no fix for the issue. The bug has been filed here: https://code.google.com/p/android/issues/detail?id=65501