Armin Ronacher's Avatar

Armin Ronacher

@mitsuhiko.at

Creator of Flask • earendil.com ♥︎ writing and giving talks • Excited about AI • Husband and father of three • Inhabits Vienna; Liberal Spirit • “more nuanced in person” • More AI content on https://x.com/mitsuhiko More stuff: https://ronacher.eu/

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11.04.2023
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Latest posts by Armin Ronacher @mitsuhiko.at

If chardet is in the clanker's training data or not would only be relevant if it would re-create chardet as it was. It's not

06.03.2026 18:16 👍 0 🔁 0 💬 1 📌 0

I’d take it. But I don’t think we will see that outcome.

06.03.2026 11:01 👍 0 🔁 0 💬 1 📌 0

We have been here before though in a way. Rob Landley who maintained Busybox for years, started Toybox precisely to change the license away from GPL. It also triggered a lot of very similar comments and emotions. See lwn.net/Articles/478... bsky.app/profile/mits...

05.03.2026 21:35 👍 9 🔁 1 💬 0 📌 0
Permissive vs Copyleft Open Source The premise of copyleft licenses is attractive: Create more open source! With permissive licenses, someone can take the code and make proprietary modifications to it and sell it to other people withou...

Agree, you might like this post from last year where I argue a lot of the same things but ignoring LLMs: shazow.net/posts/permis...

Copyleft advocates are too concerned about the value of a codebase as a whole monolith for themselves, rather than the effective replacement value to consumers.

05.03.2026 16:55 👍 6 🔁 1 💬 0 📌 0

The legal foundations of tests are very well established so there is not that much to discuss here.

05.03.2026 16:15 👍 0 🔁 0 💬 0 📌 0

Which is more a general discussion about the legal grounds of LLMs in general. Not about this port in particular.

05.03.2026 16:10 👍 1 🔁 0 💬 1 📌 0

A clanker refers to a robot. If others want to put other meanings into the word then it’s their problem.

05.03.2026 16:00 👍 2 🔁 0 💬 1 📌 0

The model would have done the same job with or without chardet in the training data.

05.03.2026 15:53 👍 2 🔁 0 💬 3 📌 0

Robots and machines are not races. That word is not racist.

05.03.2026 15:47 👍 4 🔁 0 💬 1 📌 0
Preview
AI And The Ship of Theseus Slopforks: what happens when a library gets rewritten with AI?

chardet was vipeforked to MIT and I have thoughts about it. Spoiler: I like it. lucumr.pocoo.org/2026/3/5/the...

05.03.2026 15:30 👍 51 🔁 12 💬 10 📌 5

Kaum verwunderlich. Die Dinger sind 55 Jahre alt.

02.03.2026 14:37 👍 2 🔁 0 💬 0 📌 0

That is what we are building it for

24.02.2026 10:14 👍 0 🔁 0 💬 0 📌 0
Preview
#492 - Mario Zechner & Armin Ronacher über Agentic AI, Polarisierung & die Zukunft des Programmierens

Der @mitsuhiko.at und ich durften wieder als Balkon Muppets wo auftreten. Diesmal bei Future Weekly, dem Podcast von Austrian Startups.

Wir reden auch über Arbeitnehmerinnenrechte.

open.spotify.com/episode/1Bnz...

22.02.2026 19:22 👍 26 🔁 6 💬 1 📌 2

There are people (like Peter) who want to work a lot. Nothing wrong with that!

18.02.2026 16:02 👍 3 🔁 0 💬 2 📌 0

Österreich aus dem Österreicher nehmen ist dann trotzdem schwer.

18.02.2026 08:55 👍 6 🔁 0 💬 1 📌 0
Europa im KI-Umbruch: Armin Ronacher über Agenten, Open Source & Macht | Inside AI #30
Europa im KI-Umbruch: Armin Ronacher über Agenten, Open Source & Macht | Inside AI #30 YouTube video by Fraunhofer IEM

recommended viewing mit @mitsuhiko.at

youtu.be/0rRxZgDADRw?...

18.02.2026 08:06 👍 32 🔁 5 💬 1 📌 0

Reading some of the takes about Peter here and on X feels less like criticism and more like people shadowboxing their own hatred towards AI. Maybe good to remember that Peter is a real person and one that I know quite well. The criticism thrown his direction from some people is heavily misplaced.

17.02.2026 15:09 👍 59 🔁 2 💬 5 📌 1

Die Loesung kann aber IMO nur etwas zu bauen, dass die Furcht nimmt. Ich glaub ohne dem wirds nicht gehen.

17.02.2026 12:23 👍 2 🔁 0 💬 0 📌 0

Ich habs praktisch komplett aufgegeben das Thema mit Leuten zu besprechen die sich damit nicht beschaeftigen, weil sowohl Wissen als auch Vertrauen fehlt. Da kannst keine Diskussion fuehren.

17.02.2026 12:15 👍 2 🔁 0 💬 1 📌 0

Ich glaub auch, dass jede Diskussion um das Thema nutzlos ist. Der Graben zwischen Leuten die damit arbeiten und der Bevoelkerung ist immens. Den wird man erst in Jahren zuschuetten koennen. In der Zwischenzeit wird es hauptsaechlich zu mehr und mehr Skeptik fuehren.

17.02.2026 12:14 👍 5 🔁 0 💬 1 📌 0
Post image

Did you read the post?

14.02.2026 12:21 👍 0 🔁 0 💬 1 📌 0
Preview
The Final Bottleneck AI speeds up writing code, but accountability and review capacity still impose hard limits.

Today Thorsten Ball said he's the bottleneck. I too am the bottleneck and it made me think. lucumr.pocoo.org/2026/2/13/th...

13.02.2026 18:28 👍 35 🔁 6 💬 5 📌 4
AI-Written Code: Armin Ronacher on AI Agents and the Future of Programming [Full Episode]
AI-Written Code: Armin Ronacher on AI Agents and the Future of Programming [Full Episode] YouTube video by Behind the Commit

I talked to @mitsuhiko.at, the mind behind Flask, Jinja and Rye, about AI agents and the future of programming. The full episode is out!

13.02.2026 08:43 👍 25 🔁 3 💬 2 📌 1

Important context here: this is from July last year! So much stuff has changed!

13.02.2026 15:19 👍 4 🔁 0 💬 1 📌 0

The thing absolutely has intent, RL gives it intent. Otherwise we would not have tool loops that work!

09.02.2026 10:50 👍 1 🔁 0 💬 0 📌 0
Preview
A Language For Agents What programming languages would agents want to program in?

This weekend I was thinking about programming languages. Programming languages for agents. Will we see them? I believe people will (and should!) try to build some. lucumr.pocoo.org/2026/2/9/a-l...

09.02.2026 09:45 👍 34 🔁 8 💬 4 📌 1

This Tweet is making the rounds: "Nearly every ambitious person I know who has dived into AI is working harder than ever, and longer hours than ever.

Fascinating dynamic tbh.

I have NEVER worked this hard, nor had this much fun with work."

I'm in this Tweet.

07.02.2026 22:14 👍 114 🔁 8 💬 11 📌 6

I'm not using it for a coding agent, but we're probably going to move the agent we're building at Earendil over to it.

07.02.2026 19:31 👍 2 🔁 0 💬 0 📌 0

Not since pi is allowed to use its own prompt.

07.02.2026 15:11 👍 0 🔁 0 💬 0 📌 0
Gondolin Security Design - Gondolin

If you wanna critique our Gondolin sandbox approach, I wrote some docs for the security architecture and networking stack: earendil-works.github.io/gondolin/sec... earendil-works.github.io/gondolin/net... Would love to get feedback!

07.02.2026 15:10 👍 25 🔁 1 💬 2 📌 1