WinRT: It is impossible to install a custom file into the package root

I am trying to add a file to the package root (in order to work around QTBUG-43680). The problem is that whatever I try to define as "foo.path", it either installs the file into a subdirectory, or the package build fails because of an entry in AppxManifest.map which winrtrunner cannot handle.

    resourcespri.files = winrt/resources.pri
    resourcespri.path =
    INSTALLS += resourcespri

There are couple of other files which by default land in the package root. So, it should be possible. The Issue here seems to be that installation via "INSTALL" does not allow it.