The documentation about the bundle module says:

 
This module is available on all platforms but is currently only useful on Apple platforms.

At the same time, the documentation about the ib module says:

This module is only available on Apple platforms.

Effectively, this means that I can freely depend and set various properties of the bundle on any platform while for the ib module it must be conditionally enabled or disabled as following:

Properties {
    condition: qbs.targetOS.contains('macos')
    ib.appIconName: 'myapp'
}

This is very inconvenient and inconsistent. I propose to make the ib module available on other platforms too (but doing nothing).