"Please supports Linux, macOS and FreeBSD at the moment" Let me know when I can actually use this on any machine I have to work on, instead of going "fuck you, Windows users". Writing cross-platform build tooling isn't rocket science, it's a choice. And the choice made here is stupidly disappointing in near as makes no difference 2021.
Also, they might just not have Windows developers or a use case for running the tool on Windows, so even if the cost of adding Windows support was zero, they'd have to go out of their way to test it. A lot of open source code might run just fine on Cygwin, but most people choose not to support Cygwin because damn near no-one uses it anyway.