Klepton runs Android ARM64 VR APKs on Vision Pro by relinking `.so` files into `.dylib`s.

108 points on HN. Not an emulator and no JIT: it translates Android shared libraries into loadable Apple binaries linked into the Klepton runtime, maps GLES 3.2 onto ANGLE's Metal backend, and routes Vulkan through MoltenVK. The hardest problem is the x18 register conflict between Android and macOS ABIs, patched to use per-library TLS slots. Java-thin apps only, no ART or JVM, but Beat Saber reportedly runs on both Vision Pro and macOS with minor graphical issues. Completely unrelated to agents and the best pure engineering on the board today.