2025-12-10 04:19:21
Here's the Apache 2.0 licensed source code for Mistral's new "Vibe" CLI coding agent, released today alongside Devstral 2.
It's a neat implementation of the now standard terminal coding agent pattern, built in Python on top of Pydantic and Rich/Textual (here are the dependencies.) Gemini CLI is TypeScript, Claude Code is closed source (TypeScript, now on top of Bun), OpenAI's Codex CLI is Rust. OpenHands is the other major Python coding agent I know of, but I'm likely missing some others.
The Vibe source code is pleasant to read and the crucial prompts are neatly extracted out into Markdown files. Some key places to look:
The Python implementations of those tools can be found here.
I tried it out and had it build me a Space Invaders game using three.js with the following prompt:
make me a space invaders game as HTML with three.js loaded from a CDN
Here's the source code and the live game (hosted in my new space-invaders-by-llms repo). It did OK.
Tags: python, ai, prompt-engineering, generative-ai, llms, textual, ai-assisted-programming, mistral, pydantic, vibe-coding, coding-agents, system-prompts, space-invaders
2025-12-09 20:04:43
I found the problem and it's really bad. Looking at your log, here's the catastrophic command that was run:
rm -rf tests/ patches/ plan/ ~/See that
~/at the end? That's your entire home directory. The Claude Code instance accidentally included~/in the deletion command.
— Claude, after Claude Code deleted most of a user's Mac
Tags: ai-ethics, coding-agents, claude, claude-code, generative-ai, ai, llms
2025-12-09 11:11:19
Prediction: AI will make formal verification go mainstream
Martin Kleppmann makes the case for formal verification languages (things like Dafny, Nagini, and Verus) to finally start achieving more mainstream usage. Code generated by LLMs can benefit enormously from more robust verification, and LLMs themselves make these notoriously difficult systems easier to work with.The paper Can LLMs Enable Verification in Mainstream Programming? by JetBrains Research in March 2025 found that Claude 3.5 Sonnet saw promising results for the three languages I listed above.
Via lobste.rs
Tags: programming-languages, ai, generative-ai, llms, ai-assisted-programming, martin-kleppmann
2025-12-09 09:13:39
Deprecations via warnings don’t work for Python libraries
Seth Larson reports that urllib3 2.6.0 released on the 5th of December and finally removed theHTTPResponse.getheaders() and HTTPResponse.getheader(name, default) methods, which have been marked as deprecated via warnings since v2.0.0 in April 2023. They had to add them back again in a hastily released 2.6.1 a few days later when it turned out major downstream dependents such as kubernetes-client and fastly-py still hadn't upgraded.
Seth says:
My conclusion from this incident is that
DeprecationWarningin its current state does not work for deprecating APIs, at least for Python libraries. That is unfortunate, asDeprecationWarningand thewarningsmodule are easy-to-use, language-"blessed", and explicit without impacting users that don't need to take action due to deprecations.
On Lobste.rs James Bennett advocates for watching for warnings more deliberately:
Something I always encourage people to do, and try to get implemented anywhere I work, is running Python test suites with
-Wonce::DeprecationWarning. This doesn't spam you with noise if a deprecated API is called a lot, but still makes sure you see the warning so you know there's something you need to fix.
I didn't know about the -Wonce option - the documentation describes that as "Warn once per Python process".
Via lobste.rs
Tags: james-bennett, open-source, python, seth-michael-larson
2025-12-08 11:16:41
Niche Museums: The Museum of Jurassic Technology
I finally got to check off the museum that's been top of my want-to-go list since I first started documenting niche museums I've been to back in 2019.The Museum of Jurassic Technology opened in Culver City, Los Angeles in 1988 and has been leaving visitors confused as to what's real and what isn't for nearly forty years.
Tags: museums
2025-12-08 05:28:28
Now I want to talk about how they're selling AI. The growth narrative of AI is that AI will disrupt labor markets. I use "disrupt" here in its most disreputable, tech bro sense.
The promise of AI – the promise AI companies make to investors – is that there will be AIs that can do your job, and when your boss fires you and replaces you with AI, he will keep half of your salary for himself, and give the other half to the AI company.
That's it.
That's the $13T growth story that MorganStanley is telling. It's why big investors and institutionals are giving AI companies hundreds of billions of dollars. And because they are piling in, normies are also getting sucked in, risking their retirement savings and their family's financial security.
— Cory Doctorow, The Reverse Centaur’s Guide to Criticizing AI
Tags: cory-doctorow, ai-ethics, ai
