My whole Mac kept freezing during test runs. Menus, graphs, even switching Spaces.

Turned out pytest-xdist renames its worker processes before and after every test, and macOS did not cope well with that. Since I switched it off, the freezes haven't come back.

How I tracked it down: https://wersdoerfer.de/blogs/ephes_blog/pytest-macos-desktop-freezes/

#Python #pytest #macOS

Platz ist in der kleinsten Hüpfburg!

Here on Mastodon you keep reading a certain kind of reassurance: AI is a bubble, it’ll blow over, and if you ignore it, it won’t affect you.

I think all three parts are wrong, and I wrote up why. It comes down to the price of feedback: why AlphaZero worked, why coding agents work, and what cheap verification does to code we’d long since signed off on.

https://wersdoerfer.de/blogs/ephes_blog/cheap-oracles/

Hey @badlogic and @mitsuhiko — have you looked at Next Frontier AI yet?

https://next-frontier.ai/

The more I read about it, the more I feel Europe doesn’t just need new frontier models. It also needs the infrastructure layer around them: coding harnesses, local-first agents, evals, reproducible environments, trajectory/session collection, RL data pipelines, etc.

Projects like pi and the broader local-LLM ecosystem feel surprisingly aligned with that vision.

Hello #btconf @btconf @katharina😊

New #WeekNotes: Athens, Brussels, Düsseldorf — and a little bit of open source in between.
https://wersdoerfer.de/blogs/ephes_blog/weeknotes-2026-04-27-athens-brussels-d%C3%BCsseldorf/ #indiewebcamp

Just walking by #indiewebcamp in Düsseldorf because it is happening a few minutes walk from where I live 😅.

Cool Lightning Talk by @anthony about GeneratedField at #djangoconeu2026 😎

Cool Lightning talk at #djangoconeu2026 by @mastacheata about JWT 😊

RE: https://techhub.social/@mastacheata/116414430306979759

Thanks :)

Hello #djangoconeurope #djangoconeu2026 👋🤗

Is this on?

Current vibe: Victorian railway stoker, but for LLMs.
Shoveling prompts into the firebox, watching the gauges, hoping the whole thing keeps accelerating instead of exploding.

RE: https://fosstodon.org/@djangoconeurope/116143232953240759

Very happy to be part of DjangoCon Europe this year 😊.

Catching up and improving my Home Lab - published my #WeekNotes for last week: https://wersdoerfer.de/blogs/ephes_blog/weeknotes-2025-11-10-home-lab-improvements/

New #WeekNotes: Shipped Steel-IQ after months of work! 🚀 Plus: fixing bugs at Homebrew Website Club, wrestling with Arch Linux on old MacBooks, and thoughts on Django async.

https://wersdoerfer.de/blogs/ephes_blog/weeknotes-2025-11-03-shipping-steel-iq/

Two minutes.

By the sea without laptop, thinking about home automation plans. More pictures than usual - published my #WeekNotes for the week before last week:

https://wersdoerfer.de/blogs/ephes_blog/weeknotes-2025-08-18/

New #WeekNotes: Summer break edition 🌞 Released django-cast with Wagtail 7.1 support and collected some interesting reads on small software, LLM critiques, and Claude doing DevOps.

https://wersdoerfer.de/blogs/ephes_blog/weeknotes-2025-08-11/

This week: GLM-4.5 Air + mlx_lm.server + open-webui = surprisingly powerful local coding setup. Open-weight models have come so far. Planning CLI experiments next!

https://wersdoerfer.de/blogs/ephes_blog/weeknotes-2025-08-04/

#weeknotes

Contributions welcome 🤗
https://mastodon.social/@djangonews/114984301515692244

This #weeknotes cover Python sentinel values (spoiler: avoid them unless necessary), IndieWeb integration with django-indieweb, and setting up a new M4 Mac Studio for local model testing. Plus: the perils of switching to US keyboard layout.

https://wersdoerfer.de/blogs/ephes_blog/weeknotes-2025-07-28-sentinel-values-indieweb-updates-and-new-hardware/

#Python #IndieWeb #WebDev #MacStudio

New blog post: Managing Editable Dependencies in uv 📝

If you're developing multiple Python packages that depend on each other, this might help!

Shows how to:
- Keep editable installs working with uv sync
- Avoid committing local paths to git
- Automate the workflow with pre-commit

https://wersdoerfer.de/blogs/ephes_blog/til-managing-editable-dependencies-in-uv-without-committing-local-paths/

#Python

#Weeknotes: django-cast docs ✓ Voice dictation experiments ✓ Data science podcast recorded ✓ (catching up with my 2 week lag posting those)

https://wersdoerfer.de/blogs/ephes_blog/weeknotes-2025-07-21/

WeekNotes: django-cast gallery nav fixes, tox performance improvements, and why Claude Code is still king after testing the alternatives. Also, I somehow agreed to write about running Django in Electron (send help)

https://wersdoerfer.de/blogs/ephes_blog/weeknotes-2025-07-14/

#weeknotes

Published my latest weeknotes. Topics covered: new podcast episode on data class builders, django-cast refactoring (src layout migration, uv build backend, ruff adoption). Read more:

https://wersdoerfer.de/blogs/ephes_blog/weeknotes-2025-07-07/

#weeknotes

@webology This might be interesting for you as well, right?
https://hachyderm.io/@mitsuhiko/114831410733150259

What started as "I'll just run coding agents on a remote machine" turned into a deep dive through SSH agent forwarding, tmux clipboard integration, and Fish shell event handlers.

Spoiler: mosh segfaults when connecting M-series → Intel Mac 😅

My working (if inelegant) solution: https://wersdoerfer.de/blogs/ephes_blog/running-coding-agents-remotely-ssh-tmux-and-the-quest-for-a-seamless-experience/

#tmux #FishShell #CodingAgents #ssh #AITools #ClaudeCode

Wrapping a #Django project in an electron app and shipping it to windows / macOS running a full data science stack (>1gb .venv) using a bundled relocatable Python interpreter with django-tasks for long running simulations and htmx to be able to show interactive progress. Still baffled that this works at all.
https://mastodon.world/@shezi/114821742142763275

New #weeknotes! 🚀 Fixed Kptncook auth, shipped a Micropub endpoint for django-indieweb and squeezed in a Python Podcast recording.

https://wersdoerfer.de/blogs/ephes_blog/weeknotes-2025-06-30/