Why shouldn't I have circular dependencies in my gradle build?

Is there a performance impact with having circular dependencies? With Gradle?

Dependencies in gradle are discouraged to avoid confusion. When it comes to circular dependencies, you should keep the following in mind:

• Gradle does not support circular dependencies within individual configurations
• Gradle can support two or more configurations depending on each other, unless
  • There is a compile or implementation circular dependency

In general, these restrictions limit any use case of circular dependencies, and it's highly recommended to refactor them out of your project instead.