A very good question. Short answer: I don’t.
The Squinky Labs repo does make the plugins using wingw, of course. But the unit test suite can be built on mingw or in Visual studio.
I like to use Visual studio for that because I’m used to it, I find debugging easier with their debugger, and I feel that making the code work in both compilers makes it maybe less likely to have dumb bugs.
The performance tests also build with both compilers, but I only pay attention to the numbers when using mingw.
More on that stuff here: SquinkyVCV/unit-test.md at main · squinkylabs/SquinkyVCV · GitHub