QtCreator : Plugin to replace ProgressManager implementation

Hi there, I’m currently trying to write a plugin that would allow the build progress and the number of issues to be displayed in Unity launcher icon based on this proposal : https://codereview.qt-project.org/#change,33051 My problem is to know if this is actually possible using the plugin system. Seeing that the implementation is not exposed (defined in Core::Internal::ProgressManagerPrivate). Is there a way for a plugin to insert is own implementation of the ProgressManager. Or maybe re-implementing the ProgressManager so it replaces the current one? I’d be interested in any example of plugin manipulating the CorePlugin internals.