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## Why Selected execution environments are thread-scoped resources, but startup and turn construction repeatedly resolved their IDs and working directories. That discarded existing environment handles and shell metadata even when a selection had not changed. Session configuration updates also need to affect future turns without changing the resolved environment set already captured by a running turn. ## What changed - Create a `ThreadEnvironments` service inside `Codex` from the spawned `EnvironmentManager` and raw environment selections, then store it on `SessionServices`. - Split service construction from `update_selections`, allowing session configuration updates to mutate the resolved set in place. - Retain an existing `TurnEnvironment` when its environment ID and working directory match; resolve only added or changed selections and remove selections that are no longer present. - Normalize duplicate IDs by keeping the first selection and skip individual selections that fail to resolve instead of rejecting the entire update. - Give each `TurnContext` a cloned `TurnEnvironmentSnapshot`, so later session configuration updates affect future turns without rewriting an active turn. - Reuse the service-owned environment manager and resolved snapshot for startup work, MCP initialization, and child-thread spawning instead of flowing resolved environments through spawn arguments. ## Test plan - `cargo check -p codex-core --tests` - `just test -p codex-core environment_selection` - `just test -p codex-core turn_environments` - `just test -p codex-core session_update_settings_does_not_rewrite_sticky_environment_cwds` - `just test -p codex-core default_turn_does_not_overlay_legacy_fallback_cwd_onto_stored_thread_environments`
9728992fab
·
2026-06-15 16:15:07 -07:00
7,494 Commits
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
Run the following on Mac or Linux to install Codex CLI:
curl -fsSL https://chatgpt.com/codex/install.sh | sh
Run the following on Windows to install Codex CLI:
powershell -ExecutionPolicy ByPass -c "irm https://chatgpt.com/codex/install.ps1 | iex"
Codex CLI can also be installed via the following package managers:
# 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.