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I built a drop-in replacement for proot that runs full Linux userspace (Node.js, Python, Git, Chromium) on Android without root.

proot uses ptrace — 2 context switches per syscall. proroot uses LD_PRELOAD + binary patching — 0 context switches, in-process path translation.

It powers andClaw, an app that turns Android phones into AI agent gateway servers running OpenClaw with a real Chromium browser.

Tested with Node.js 24, Python 3.12, Git, and Chromium headless_shell (Playwright).

Binary release (arm64 .so files): https://github.com/coderredlab/proroot

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Show HN: Proroot – Zero-overhead proot replacement for Android