It's good to see that you're having fun with Haiku. I actually enjoyed programming for Haiku a couple of years back on my Haiku only project (Medo), these days I'm 100% exhausted with my day job (and my previous company went into liquidation and I changed jobs / continents), and it's hard to make the time for passion projects.
Best of luck with your project, I look forward to seeing it released one day.
Thanks! I'm working on a port of Solvespace to Haiku. My goal is ultimately to give it a native UI and some new features, but I'm still early in the process. The latest thing I got working was some pixels in the screen from a replacement 2D renderer that uses AGG instead of Cairo. I post screenshots to Twitter as I go (@realtaraharris).
Best of luck with your project, I look forward to seeing it released one day.