# Codex bundles LibreOffice

> Source: <https://simonwillison.net/2026/Sep/1/codex-libreoffice/>
> Published: 2026-09-01 19:03:01+00:00

I was poking around in my `~/.cache/`

folder using [OmniDiskSweeper](https://www.omnigroup.com/more) when I spotted something interesting. The OpenAI Codex desktop app (since [rebranded](https://help.openai.com/en/articles/20001276-moving-to-the-new-chatgpt-desktop-app) to just ChatGPT) has 1.7GB of stuff in there in a folder called `codex-primary-runtime`

, including a full Python installation, a full Node.js installation, and native binaries for [Poppler](https://poppler.freedesktop.org), git, and the [LibreOffice](https://en.wikipedia.org/wiki/LibreOffice) open source office suite (which forked from OpenOffice.org in 2010):

The `~/.cache/codex-runtimes/codex-primary-runtime/plugins/openai-primary-runtime/plugins/documents`

folder includes skills which tell Codex how to find and use those binaries.

Tags: [codex](https://simonwillison.net/tags/codex), [generative-ai](https://simonwillison.net/tags/generative-ai), [openai](https://simonwillison.net/tags/openai), [ai](https://simonwillison.net/tags/ai), [llms](https://simonwillison.net/tags/llms), [openoffice](https://simonwillison.net/tags/openoffice), [open-source](https://simonwillison.net/tags/open-source)