Need help developping a KCM using Qt Creator

Hi everyone !

I've developped a simple automatic brightness service and I'm trying to develop my own KCM to edit its settings.

After trying to use VSCode without success (it keeps complaining it can't find Qt even though CMake finds it without issues...) I've decided to give Qt Creator a go.

My main issue is that I can't run the project. I've tried following this guide and setting up custom build/deploy/launch commands but it seems that ~/kde/usr is not part of prefix.sh. I feel like I'm missing something there...

Have anyone successfully done this ? I can't seem to find any resource about using Qt Creator specifically for creating KCMs.