[Qbs] Compiling QtCreator QbsProjectManager plugin with Qbs

[Wolfgang Baron]

Hi all,

I am trying to compile QtCreator for debugging and I like Qbs, so I 
tried compiling QtCreator using the Qbs project file using 
QtCreator-4.2.1 and Qt-5.8 msvc2015 32 bits on Windows 10 (current 
version installed through web installer). In fact, I also tried 64 bits 
with the same result.

All seemed well, but then I noticed, QbsProjectManager was not there, 
which was the main reason I compiled QtCreator in the first place. The 
project manager shows QbsProjectManager in grey, implying an ignored 
state. A check on why this could be lead me to property "condition" of 
the QbsProjectManager product. I replaced the condition with:

     condition: {
             console.info("buildQbsProjectManager " + 
project.buildQbsProjectManager);
             return project.buildQbsProjectManager;
     }

This printed "true". I changed the calculation of buildQbsProjectManager 
in the surrounding "src.qbs" and also got the information, that 
QbsProjectManager should be built. Nonetheless, it is grey in the 
QtCreator project view and is not built.
What is happening here? How can I persuade QtCreator/Qbs to build 
QbsProjectManager nontheless?

Thanks for any advice!