Monorepos -- you've heard the talks, you've read the blog posts, maybe you've seen a few tantalizing glimpses into how Google or Meta organize their massive codebases. But it's often in the abstract and behind closed doors. What if you could crack open a real, production monorepo, one with over a million lines of Python and over 100 of sub-packages, and actually see how it's built, step by step, using modern tools and standards? That's exactly what Apache Airflow gives us.

On this episode, I sit down with Jarek Potiuk and Amogh Desai, two of Airflow's top contributors, to go inside one of the largest open-source Python monorepos in the world and learn how they manage it with uv, pyproject.toml, and the latest packaging standards, so you can apply those same patterns to your own projects.

Episode sponsors

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Links from the show

Guests
Amogh Desai: github.com
Jarek's GitHub: github.com

definition of a monorepo: monorepo.tools
airflow: airflow.apache.org
Activity: github.com
OpenAI: airflowsummit.org
Part 1. Pains of big modular Python projects: medium.com
Part 2. Modern Python packaging standards and tools for monorepos: medium.com
Part 3. Monorepo on steroids - modular prek hooks: medium.com
Part 4. Shared “static” libraries in Airflow monorepo: medium.com
PEP-440: peps.python.org
PEP-517: peps.python.org
PEP-518: peps.python.org
PEP-566: peps.python.org
PEP-561: peps.python.org
PEP-660: peps.python.org
PEP-621: peps.python.org
PEP-685: peps.python.org
PEP-723: peps.python.org
PEP-735: peps.python.org
uv: docs.astral.sh
uv workspaces: blobs.talkpython.fm
prek.j178.dev: prek.j178.dev
your presentation at FOSDEM26: fosdem.org
Tallyman: github.com

Watch this episode on YouTube: youtube.com
Episode #540 deep-dive: talkpython.fm/540
Episode transcripts: talkpython.fm

Theme Song: Developer Rap
🥁 Served in a Flask 🎸: talkpython.fm/flasksong

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#540: Modern Python monorepo with uv and prek