0.9.0

What's Changed

For a deep dive into this release, check out our blog post.

Breaking changes

This release drops support for Python 3.8, which has reached its end-of-life.

Highlights

• 💬 Custom chatbots: Create custom chatbots with mo.ui.chat, a reactive chat component
• ✨ Gemini support: marimo’s built-in AI assistant now supports Google’s Gemini model
• 💾 Smart caching: marimo now ships with opt-in caching that lets you shut down or re-run notebooks and pick up where you left off, instantly loading variables in memory instead of recomputing them.

All changes

• fix: pin version to current marimo version in sandbox by @mscolnick in #2447
• improvement: allow more package installation rules in the pkg management UI by @mscolnick in #2448
• chore: upgrade pnpm v9 by @mscolnick in #2450
• feat: mo.ui.chat() by @mscolnick in #2436
• fix: mangle node.asname for imports by @akshayka in #2452
• [pre-commit.ci] pre-commit autoupdate by @pre-commit-ci in #2454
• Docs: Add guide to Codeium API key from VS Code by @rparkr in #2458
• improvement: add -o to marimo convert CLI by @mscolnick in #2461
• improvement: add on-module-change footer config by @mscolnick in #2462
• improvement: support sunburst and treemap plotly selection by @mscolnick in #2463
• feat: add mo.notebook_dir(). avoid relative paths for better reproducibility by @mscolnick in #2464
• feat: @marimo.cache + tests and documentation by @dmadisetti in #2318
• Remove 3.8 support by @akshayka in #2467
• Update AutoExporter directory to marimo by @akshayka in #2468
• Use notebook directory in persistent_cache by @akshayka in #2469
• fix: broken screenshot links in docs by @rparkr in #2472
• Document support for IPython _repr_*_()_ protocol by @akshayka in #2470
• fix: opening nested files with 'marimo edit ' by @mscolnick in #2477
• fix: honor show_column_summaries by @mscolnick in #2475
• fix: open running notebooks in new tab on the homepage by @mscolnick in #2476
• added python executable to pip and uv by @liquidcarbon in #2478
• feat: support gemini in AI Assist and mo.ui.chat() by @mscolnick in #2479
• fix: reactive ui.chat, add examples by @akshayka in #2482
• fix: handle shadowed variables in mo.cache, update tutorials by @akshayka in #2480
• 0.9.0 by @akshayka in #2490

New Contributors

• @rparkr made their first contribution in #2458

Full Changelog: 0.8.22...0.9.0