Positively surprised by such an early language supporting multiple platforms already, having a clear Getting Started guide and FAQ, language spec and examples. Even aware about the Visual Studio Command Prompt in Windows despite supporting *nix — what is this!
I commonly develop on Windows first, and thus support Windows as the main platform. My general philosophy is if it works on Windows, porting to nix is usually pretty simple.
One thing that did take some time was getting System V ABI support for the Odin compiler so that nix platforms could support C-ABI 100%.
As for VCVARSALL.BAT, there is work currently trying to remove the requirement for it once the compiler is built on Windows. However, Microsoft being what it is, it's quite annoying to get it working on everyone's machine correctly.
