Thanks for your awsome work!
The wizard is shown, I can choose f.e. my arduino nano,
I can add it to git and than this window is promted:
No valid settings file could be found.
All settings files found in directory "/home/jack/Workbench/arduino3/arduino3.pro.user" were unsuitable for the current version of Qt Creator, for instance because they were written by an incompatible version of Qt Creator, or because a different settings path was used.
Afterwards, just the pro file appears. The paths were all correct.
Maybe not working anymore? I will compare the xml template file with some others tomorrow.