Regression in 3.13: custom matcher hash argument improperly converted to keyword args, results in ArgumentError

However, since you haven't yet provided any details about how you built with Qt (Qt isn't officially supported, so you must have used a third party derivative of vim), and you haven't provided any detailed information about what error messages or malfunctions you're having with python-complete, it's not really possible to tell you how to fix the problem and get vim working with Qt.

Firstly, it's nice to see a well-structured question post!

When there are imperfections, we rely on users and our active community to tell us how the software is not working correctly, so we can fix it. The way we do that, and have done for 15 years now, is via bug reports. Discussion is great, but detailed bug reports are better for letting developers know what’s wrong.