The WARF Way Part II: Tackling the macOS Frontier with osx-cross and Darling

In my last post, "The Warf Way: Seamless Windows Testing" we looked at how to streamline Windows testing by leveraging Docker and Wine. It provided a seamless way to validate Windows-specific logic without ever leaving the comfort of Linux. But as any cross-platform developer knows, Windows is only half the battle. The "Final Boss" of CI is almost always macOS. Traditionally, testing for macOS meant maintaining expensive dedicated hardware or spinning up slow, proprietary VM instances in the cloud. Today, I'm excited to share a follow-up on how we are applying the "Warf Way" to Apple's ecosystem using osx-cross for compilation and Darling for runtime testing. All packaged neatly inside Dockerfile.osx-cross. The Challenge: Apple's Walled Garden Compiling for macOS from Linux is notoriously difficult due to the requirement of the macOS SDK and specific linker behaviors. Testing that code is even harder, as macOS binaries require a Mach-O compatible kernel. WARF's Next Step: Declarative…