I’m one of those who just closed the installer and built MQ2 from the sources

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The choice of language and the visual style might not appeal to everyone, that’s for sure.
What’s really interesting, though, are the technical aspects — they make you think about possible solutions for the future. For example, I’ve used similar techniques for Windows UIs with modern GPU shaders, creating nice, dynamic interfaces, and I wonder if this kind of approach could become a solution for tomorrow.
The main thing is that the developer had fun creating this installer — and that really deserves some encouragement!