OpenCode 2 for Termux v1.0.3 (Android seccomp SIGSYS fix)

OpenCode 2 for Termux v1.0.3

Critical fix: Android seccomp crash (Bad system call, exit 159).

Every Android process inherits a zygote seccomp policy that traps close_range (and
openat2, fchmodat2, pidfd_open, clone3) with SECCOMP_RET_TRAP. Stock Bun calls
close_range before main, so opencode2 died with SIGSYS (exit 159) on Android. On this
device it crashed on every invocation; on others it surfaced when spawning a process (the
reported "background process" crash).

This release embeds a patched Bun runtime carrying the upstream fix
(oven-sh/bun#39775, #30769): a SIGSYS handler installed in bun_initialize_process rewrites
the syscall return register to -ENOSYS for seccomp traps, so Bun's existing fallbacks run
(real close() loop instead of close_range) - no crash, and descriptor cleanup is preserved.

The patch and build script are maintained in this repo:
patches/bun/android-seccomp-sigsys.patch + scripts/build-bun-android.sh.

Install

Pacman

curl -LO https://github.com/guysoft/opencode-termux/releases/download/v1.0.3/opencode2-1.0.3-1-aarch64.pkg.tar.xz
pacman -U opencode2-1.0.3-1-aarch64.pkg.tar.xz
opencode2

Deb

curl -LO https://github.com/guysoft/opencode-termux/releases/download/v1.0.3/opencode2_1.0.3_aarch64.deb
dpkg -i opencode2_1.0.3_aarch64.deb
opencode2

Standalone zip

curl -LO https://github.com/guysoft/opencode-termux/releases/download/v1.0.3/opencode2-1.0.3-android-aarch64.zip
mkdir -p $PREFIX/libexec/opencode2
unzip opencode2-1.0.3-android-aarch64.zip
mv opencode2 $PREFIX/bin/opencode2 && chmod +x $PREFIX/bin/opencode2
mv opencode2.bin libopentui.so $PREFIX/libexec/opencode2/
chmod +x $PREFIX/libexec/opencode2/opencode2.bin
pkg install ripgrep
opencode2

Verified on device

Samsung Galaxy S10e (SM-G970F, Android 12), in Termux (app seccomp domain):

• opencode2 --version -> opencode2 v2.0.0-android-termux.2 (was Bad system call, exit 159)
• TUI starts and renders; background service spawns
• opencode2 run spawns its server child and exits cleanly (EXIT=0)
• No SIGSYS/SYS_SECCOMP in logcat

Unchanged

• Side-by-side with v1 (opencode untouched); v2 files stay private under libexec/opencode2/
• App version scheme: opencode2 --version shows the app version, v1.0.x is this repo release

SHA256 checksums in SHA256SUMS.