Same here. I designed and built the first version of Aether with Qt5 via Python. It was a miserable experience where the only way to solve certain things were to insert non-meaningful text into certain magic Python fields which would go and compile in C++. Plus a few hundred iterations of getting the magic incantations to work in a consistent manner.
For the second version — I've moved to Electron for UI and Go binaries for actual heavy lifting. At least that one is a known pain you can Google for.