Ahmed Ibrahim
9b5078d3e8
## What changed - keep the explicit stdin-close behavior after writing so the child still receives EOF deterministically - on Windows, stop using `python -c` for the round-trip assertion and instead run a native `cmd.exe` pipeline that reads one line from stdin with `set /p` and echoes it back - send ` ` on Windows so the stdin payload matches the platform-native line ending the shell reader expects ## Why this fixes flakiness The failing branch-local flake was not in `spawn_pipe_process` itself. The child exited cleanly, but the Windows ARM runner sometimes produced an empty stdout string when the test used Python as the stdin consumer. That makes the test sensitive to Python startup and stdin-close timing rather than the pipe primitive we actually want to validate. Switching the Windows path to a native `cmd.exe` reader keeps the assertion focused on our pipe behavior: bytes written to stdin should come back on stdout before EOF closes the process. The explicit ` ` write removes line-ending ambiguity on Windows. ## Scope - test-only - no production logic change
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, 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.