Created attachment 133209 [details] Crash log KDevelop crashes at startup on MacOS. I tried on both BigSur and Mojave. KDevelop won't work on none of them.
It's missing some Qt libraries. That's why it will crash at startup. You should give a look at QGIS Mac that embed most of the Qt libraries necessary. https://github.com/qgis/QGIS-Mac-Packager