I tried to boot an iOS 12 kernelcache in QEMU: I managed to get as far as IOKit startup before receiving a kernel panic. I learned a lot about how iOS boots up with this project.
I helped track down the misbehaving macOS compatibility patch that broke native tabs support in VS Code. I also learned to avoid introducing new bugs in bugfixes.
I learned to extract working shared libraries from macOS’s dyld shared cache, and learned a bit about Mach-O executables, Objective-C, and problem solving along the way.
Here’s how to port your iOS apps to macOS 10.14 Beta using Apple’s iOSMac/Marzipan framework. A “Hello World” iOS app can become a macOS app in less than 5 minutes. (I timed it.).
Macs are case insensitive, but the iOS Simulator uses a hidden option in macOS’s kernel to enable case sensitivity, to match real iOS devices. This option can also be set with macOS’s
taskpolicytool, so you can launch any macOS process with case sensitivity enabled.
VSCode is my favorite editor, and I wanted to contribute back to this open source project that helped me so much. Thus, I learned to build and debug VSCode to triage and fix two bugs from their bug tracker.
What do Photoshop, Matlab, Panic Transmit, and Eclipse have in common? They are among the 299 apps for which macOS applies compatibillity fixes.
I learned to call Android’s hidden ActivityManager APIs from the ADB command line to access the screenshots of Recent Apps, so I can build a custom app switcher.
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