maxjivi05
b8fcef622e
The runtime carries Termux's proot 5.1.107-70 as a prebuilt binary, built from termux/proot 4dba3afb (every file:line site in it matches that commit). The apk now builds that same commit with the NDK, with three patches ported from WinNative's feature/proot-enhancements, and prefers it over the runtime's copy: - Tracees are hashed by pid, so each ptrace stop finds its tracee without walking a list of every thread, and terminated tracees are swept only after a termination. - A clean absolute path three or more directories deep under the rootfs alone has its parent opened once and taken as canonical when the kernel's path for it is the one proot would build, instead of an lstat per component; the final component of a call that does not follow it is no longer lstat'ed. Extensions still see the parent's host path, and the f2fs workaround keeps the old walk. - A clone3 thread keeps its inherited flags when clone_args cannot be read. talloc is linked in statically from Samba's release tarball, so libproot.so needs only libc and libdl. On an x86_64 Android 15 emulator the same build ran a path and thread test suite with output identical to the unpatched commit (fake id, fake root, link2symlink, with and without seccomp), and a stat-heavy benchmark ran 25-27% faster, 31-36% with 1500 live threads.
DroidDeck
Run Valve's native ARM64 Steam client on an Adreno Android device. Steam runs in a Linux runtime under proot, with gamescope and an in-app Vulkan compositor. Windows games use Valve's ARM64 Proton and FEX. A desktop with LXQt, Firefox, and emulators is also available.
Requirements and install
Use Android 9 or newer on a supported Adreno device (730 or newer, or 8xx). Mali, Xclipse, PowerVR, and Adreno 710 are unsupported. No root is required. Allow about 3 GB for the runtime and 1.1 GB more for the desktop and emulators. Install the APK from Releases, install the Linux runtime, then press Play and sign in. Steam downloads on first launch. Install Desktop & apps to use the desktop and emulators.
On Android 12+, if Steam exits without a log, turn off Restrict child processes in Developer options.
Build
Run tools/build_local.sh with Docker, Java 17, the Android SDK/NDK, and zstd installed. It builds the ARM64 audio sinks from PulseAudio 13.0 and packages them into the APK at app/build/outputs/apk/release/app-release.apk. Set DROIDDECK_PA13_SOURCE_DIR to an existing PulseAudio 13.0 source directory to skip downloading it. To install the APK on an attached device, run tools/deploy_local.sh.
Limits
Compatibility and performance vary by device; hardware validation is limited. Desktop compositing uses software rendering. Firefox sandboxing is reduced under proot. See the session logs in Download/DroidDeck/ when diagnosing problems.
Credits and licence
GPL-3.0. Runtime, shim, input, and controller work build on WinNative and Bannerlator (maxjivi05). See LICENSE. Steam and Proton belong to Valve Corporation; this project is not affiliated with Valve.