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Jan David

@jdno.dev

Building the Rust frameworks for Humans and AI at @aonyx.ai jdno.dev

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26.09.2025
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Latest posts by Jan David @jdno.dev

As dumb, incorrect, and annoying as coding agents sometimes are, nothing has gotten me this excited to start and then immediately abandon projects in a long time!

09.03.2026 17:27 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
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Tell me Claude is vibe-coded without telling me that Claude is vibe-coded... status.claude.com/incidents/pq...

09.03.2026 16:46 πŸ‘ 4 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0

Same! 😭 Especially since there are so many crates that make this so, so easy...

27.02.2026 10:56 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

Claude just randomly decided that we're now following strict TDD in this project. πŸ€·β€β™‚οΈ

26.02.2026 20:43 πŸ‘ 1 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0

I think I know that place!

26.02.2026 18:15 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

Mind you, Gmail has full access to my work calendar and should know that I'm not traveling. 😭

25.02.2026 22:29 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

Gmail suggests a reply to an email saying that I'll be traveling next week to a conference, but have time to meet from Tuesday afternoon onwards. First of all, total lie. Second, how can I be free from Tuesday afternoon if I'm also traveling for a conference?? πŸ€¦β€β™‚οΈ

25.02.2026 22:28 πŸ‘ 0 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0

GitHub Actions is waiting for jobs to start before it can cancel them and somehow I am not surprised...

25.02.2026 21:11 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
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Infrastructure Engineer - Python Software Foundation - Career Page Apply to Infrastructure Engineer at Python Software Foundation in Remote.

We're hiring! The PSF is looking for a full-time, remote, US-based Infrastructure Engineer to help keep PyPI, python.org, docs.python.org, and PyCon US running for millions of Python users worldwide 🐍 Apply here:

25.02.2026 15:27 πŸ‘ 23 πŸ” 18 πŸ’¬ 0 πŸ“Œ 0

There's a good 63% chance that I'm overengineering something right now. But oh my will it be beautiful...

23.02.2026 20:41 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

The thing that surprised me most at @rustnationuk.bsky.social is how many people are working on #Rust + #AI that I just hadn't heard of. Makes me wonder what else is out there that I'm missing out on...

23.02.2026 16:20 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

Back home from @rustnationuk.bsky.social. It was great to see old friends and make some new ones. Left with lots to think about and a few new ideas to explore. πŸ™‚

20.02.2026 18:05 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

I'm gonna be at @rustnationuk.bsky.social this week. If you're using #Rust with #AI tools, I'd love to meet and hear about your experience!

16.02.2026 15:50 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
setting on github to set commit message of a squashed PR to PR title + description

setting on github to set commit message of a squashed PR to PR title + description

TIL this setting on GitHub. kinda mad about the years of git commits could have contained my beautiful PR descriptions

13.02.2026 23:42 πŸ‘ 40 πŸ” 6 πŸ’¬ 6 πŸ“Œ 1

Totally forgot this existed!

11.02.2026 19:53 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

Anyone going to #rustnationuk who's working with Rust through coding agents? Would love to chat about your experiences!

10.02.2026 13:40 πŸ‘ 1 πŸ” 1 πŸ’¬ 0 πŸ“Œ 0
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Understanding Spec-Driven-Development: Kiro, spec-kit, and Tessl Notes from my Thoughtworks colleagues on AI-assisted software delivery

This was an interesting read and captures some of my own confusions about spec-driven development tools right now. martinfowler.com/articles/exp...

06.02.2026 11:37 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

Apple really fucked up with the new office suite. Why do I have two Keynote apps installed now? And why is there an ad inside the new one? Enshittification through and through...

04.02.2026 10:25 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

I'm convinced software quality will diverge massively in the future. That makes this such an exciting time to build developer tooling, because we can create tools that raise the bar instead of lower it.

03.02.2026 21:15 πŸ‘ 1 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0

"Coding agents have infinite discipline to follow conventions."

Some of the core ideas that made us want to build Aonyx are coming together.

03.02.2026 15:35 πŸ‘ 1 πŸ” 1 πŸ’¬ 0 πŸ“Œ 0

After months of heads-down work, it feels great to finally share some of what we're building with Aonyx. First post on designing developer tools for coding agents is up! πŸ₯³

03.02.2026 14:59 πŸ‘ 1 πŸ” 1 πŸ’¬ 0 πŸ“Œ 0

Logitech is shoving so many different apps in my face, you'd think one of them could've told me that my mouse was running out of battery. πŸ™„

30.01.2026 10:15 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

I can't believe how much time I am still spending getting tests to work locally and in CI. Especially when they need external services or tools. This feels like a problem we should've solved long ago as an industry...

29.01.2026 16:15 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

Best practices in #software are hard because they require extremely disciplined teams. #AI should basically solve this because it has unlimited discipline.

29.01.2026 10:11 πŸ‘ 2 πŸ” 1 πŸ’¬ 1 πŸ“Œ 0
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Ubiquitous Language In domain-driven design (DDD), the ubiquitous language is a shared language that is used to describe the domain and the domain model. It’s a common language that is used by developers, stakeh…

I've been thinking a lot about ubiquitous language and domain-driven design recently. Feels like such an obvious paradigm for working with coding agents, because it maps so well to natural language inputs. ddd-practitioners.com/home/glossar...

28.01.2026 16:21 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

Yes, that's true. I think part of the problem is that organizational changes are very hard while it's very easy to just have Claude Code write more code. Pretty sure the actual opportunity is in better collaboration though, both human-human and human-AI. Focusing on velocity feels very shortsighted.

27.01.2026 21:29 πŸ‘ 1 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0

I'm so not sure why 21:56 feels like the right time to be productive. I could've gotten work done all day, why is my productivity peak in the middle of the night? 😫

27.01.2026 20:56 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
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Magic Pages Get your Ghost CMS publication up and running in no time with Magic Pages' Ghost CMS web hosting – starting at $6/month!

Shoutout to Magic Pages for their insanely fast response times to customer support requests. www.magicpages.co

27.01.2026 20:18 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

What we're doing is an experiment that is certainly not for everyone. And who knows if it'll work, even for us...

27.01.2026 19:07 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

We are not making software for airplanes, though. I wouldn't want an aircraft engineer to YOLO-mode their code, but I also wouldn't want every CSS change I make to require certification by the FAA. There's a right tool for every job.

27.01.2026 19:07 πŸ‘ 1 πŸ” 0 πŸ’¬ 2 πŸ“Œ 0