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## Summary Move the rusty_v8 artifact production into hermetic Bazel path and bump the `v8` crate to `147.4.0` The new flow builds V8 release artifacts from source for Darwin and Linux targets, publishes both the current release-compatible artifacts and sandbox-enabled variants, and keeps Cargo consumers on prebuilt binaries by continuing to feed the `v8` crate the archive and generated binding files it already expects. ## Why We need control over V8 build-time features without giving up prebuilt artifacts for downstream Cargo builds. Upstream `rusty_v8` already supports source-only features such as `v8_enable_sandbox`, but its normal prebuilt release assets do not cover every feature combination we need. Building the artifacts ourselves lets us enable settings such as the V8 sandbox and pointer compression at artifact build time, then publish those outputs so ordinary Cargo builds can still consume prebuilts instead of compiling V8 locally. This keeps the fast consumer experience of prebuilt `rusty_v8` archives while giving us a reproducible path to ship featureful variants that upstream does not currently publish for us. ## Implementation Notes The Bazel graph in this PR is not copied wholesale from `rusty_v8`; `rusty_v8`'s normal source build is still GN/Ninja-based. Instead, this change starts from upstream V8's Bazel rules and adapts them to Codex's hermetic toolchains and dependency layout. Where we intentionally follow `rusty_v8`, we mirror its existing artifact contract: - the same `v8` crate version and generated binding expectations - the same sandbox feature relationship, where sandboxing requires pointer compression - the same custom libc++ model expected by Cargo's default `use_custom_libcxx` feature - the same release-style archive plus `src_binding` outputs consumed by the `v8` crate To preserve that contract, the Bazel release path pins the libc++, libc++abi, and llvm-libc revisions used by `rusty_v8 v147.4.0`, builds release artifacts with `--config=rusty-v8-upstream-libcxx`, and folds the matching runtime objects into the final static archive. ## Windows Windows is annoyingly handled differently. Codex's current hermetic Bazel Windows C++ platform is `windows-gnullvm` / `x86_64-w64-windows-gnu`, while upstream `rusty_v8` publishes Windows prebuilts for `*-pc-windows-msvc`. Those are different ABIs, so the Bazel graph cannot truthfully reproduce the upstream MSVC artifacts until we add a real MSVC-targeting C++ toolchain. For now: - Windows MSVC consumers continue to use upstream `rusty_v8` release archives. - Windows GNU targets are built in-tree so they link against a matching GNU ABI. - The canary workflow separately exercises upstream `rusty_v8` source builds for MSVC sandbox artifacts, but MSVC is not yet part of the Bazel-produced release matrix. ## Validation This PR is technically self validating through CI. I have already published it as a release tag so the artifacts from this branch are published to https://github.com/openai/codex/releases/tag/rusty-v8-v147.4.0 CI for this PR should therefore consume our own release targets. I have also locally tested for linux and darwin. --------- Co-authored-by: Codex <noreply@openai.com>
npm i -g @openai/codex
or brew install --cask codex
Codex CLI is a coding agent from OpenAI that runs locally on your computer.
If you want Codex in your code editor (VS Code, Cursor, Windsurf), install in your IDE.
If you want the desktop app experience, run
codex app or visit the Codex App page.
If you are looking for the cloud-based agent from OpenAI, Codex Web, go to chatgpt.com/codex.
Quickstart
Installing and running Codex CLI
Install globally with your preferred package manager:
# Install using npm
npm install -g @openai/codex
# Install using Homebrew
brew install --cask codex
Then simply run codex to get started.
You can also go to the latest GitHub Release and download the appropriate binary for your platform.
Each GitHub Release contains many executables, but in practice, you likely want one of these:
- macOS
- Apple Silicon/arm64:
codex-aarch64-apple-darwin.tar.gz - x86_64 (older Mac hardware):
codex-x86_64-apple-darwin.tar.gz
- Apple Silicon/arm64:
- Linux
- x86_64:
codex-x86_64-unknown-linux-musl.tar.gz - arm64:
codex-aarch64-unknown-linux-musl.tar.gz
- x86_64:
Each archive contains a single entry with the platform baked into the name (e.g., codex-x86_64-unknown-linux-musl), so you likely want to rename it to codex after extracting it.
Using Codex with your ChatGPT plan
Run codex and select Sign in with ChatGPT. We recommend signing into your ChatGPT account to use Codex as part of your Plus, Pro, Business, Edu, or Enterprise plan. Learn more about what's included in your ChatGPT plan.
You can also use Codex with an API key, but this requires additional setup.
Docs
This repository is licensed under the Apache-2.0 License.