a4bb59884b
## Summary - When building via `nix build`, the binary reports `codex-cli 0.0.0` because the workspace `Cargo.toml` uses `0.0.0` as a placeholder on `main`. This causes the update checker to always prompt users to upgrade even when running the latest code. - Reads the version from `codex-rs/Cargo.toml` at flake evaluation time using `builtins.fromTOML` and patches it into the workspace `Cargo.toml` before cargo builds via `postPatch`. - On release commits (e.g. tag `rust-v0.101.0`), the real version is used as-is. On `main` branch builds, falls back to `0.0.0-dev+<shortRev>` (or `0.0.0-dev+dirty`), which the update checker's `parse_version` ignores — suppressing the spurious upgrade prompt. | Scenario | Cargo.toml version | Nix `version` | Binary reports | Upgrade nag? | |---|---|---|---|---| | Release commit (e.g. `rust-v0.101.0`) | `0.101.0` | `0.101.0` | `codex-cli 0.101.0` | Only if newer exists | | Main branch (committed) | `0.0.0` | `0.0.0-dev+b934ffc` | `codex-cli 0.0.0-dev+b934ffc` | No | | Main branch (uncommitted) | `0.0.0` | `0.0.0-dev+dirty` | `codex-cli 0.0.0-dev+dirty` | No | ## Test plan - [ ] `nix build` from `main` branch and verify `codex --version` reports `0.0.0-dev+<shortRev>` instead of `0.0.0` - [ ] Verify the update checker does not show a spurious upgrade prompt for dev builds - [ ] Confirm that on a release commit where `Cargo.toml` has a real version, the binary reports that version correctly
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 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, Team, 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.