Modern non-web tooling has regressed. For example, in 2018 you could download and install Qt and pyqt, make a UI in Qt Designer, run it through pyuic and have a working UI. I'm not sure when it changed but now once you find the installer, get through the Qt account requirement, and actually install, Qt Designer is nowhere to be seen. It may be hidden away in their IDE somewhere now, but I couldn't find it.