Play 1.x support introduces Ivy customization
Change effective on 04 January 2015
Heroku’s support for Play 1.x applications has introduced the ability to customize Ivy execution by providing an ivysettings.xml file to the build. To use this feature, create a .ivy2-overlay directory in the root of your project. Put your ivysettings.xml file in this directory, and add it to your Git repository. The contents of the .ivy2-overlay directory will be copied over the default .ivy2 directory at compile time.
For more information on Heroku’s support for Play 1.x application, see the Play documentation in the Heroku DevCenter. For more information on customizing Ivy, see the Apache Ivy documentation.