Lobsters

Python 3.15.0

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Unison Cloud is now open source

Unison Cloud is open source, MIT licensed. We think this tech will be more useful to the world as an open source technology and hope that people build great things with it.

A tale of four theorem provers, or: A (reasonably) opinionated comparison of Isabelle/HOL, Lean, HOL4, and Agda

Arbitrary Rankings Ease of proof discovery (higher better) Ease of proof manipulation (higher better) Enjoyment (higher better) Annoyance factor (lower better) Puzzled factor (lower better)

Why Are Coding Agents So Dumb?

Updates about my life and what I learn about creating software

"Robot" Is A Social Construct: Why Your Dishwasher Is Not A Robot

The most effective way to nerd snipe a roboticist is to present them with a controversial definition of a "robot"

Deepthi Sigireddi from Supabase

Deepthi Sigireddi is a developer with over 25 years of experience. She's worked on Vitess and Multigres. And she now serves as Head of Databases at Supabase.

What are you doing this weekend?

Feel free to tell what you plan on doing this weekend and even ask for help or feedback. Please keep in mind it’s more than OK to do nothing at all too!

There are many themes, but this one is yours

Pi's new system theme asks your terminal for its colors and builds Pi's theme from them. How it works.

Programming Isn’t Special

Artists understand that AI is bad for art. Why don’t programmers understand that we are artists?

B-Trees Are Back: Engineering Fast and Pageable Node Layouts

Rolling the Root Key (Update)

This is an update to an article I posted in May of this year. As I write this, it's now the 8th October, and the Root Key of the DNS is scheduled to roll on the 11th October.

Demoting i686 Windows targets to std-only

Empowering everyone to build reliable and efficient software.

64-Day Certificate Lifetimes Coming Feb 2027

On February 10, 2027, all Let’s Encrypt subscribers will move to certificates with 64 day lifetimes by default unless they select an even shorter lifetime (45 or 6 days, as previously announced).

Navier-Stokes lost in translation: Why Lean verification of AI autoformalisation does not guarantee correct natural language proofs

Autoformalisation is increasingly used to verify mathematical texts, including those generated by AI, as in OpenAI's announced proof of blow-up of solutions to the Navier-Stokes equations.

The history of the Hetzner Cloud network stack

Learn how the Hetzner Cloud network stack has evolved and what role Open vSwitch, Private Networks, and Cloud Firewalls play.

The Missing Piece in Rust Error Handling

Rust already has most of what I want from error handling: explicit control flow, errors as values, and concise propagation with ?. The friction comes when deciding what to put in the error half of Result.

Extending Guix

Guix is all about empowering people, so it should come as no surprise that one can extend it with new guix commands. You can show the commands available in your current Guix through the help command:

Ending the Casuarina Linux Experiment

I didn’t expect this to be the second post after the announcement, but here we are. The short version is that I’ve decided to wind down the Casuarina Linux project. Things will continue as-is until the end of October 2026.