The kernel of the AI platform I’ve been building is one Python file. Roughly 1500 lines. Tagged once at v0.6.0. Never updated, by spec. That’s a controversial design choice. Engineering instinct says…

Have you been wondering if you should use Django Tasks for your next project? See how Djangonaut Space is using it today.

A receiver for Navtex maritime navigational and meteo warnings.

what it is -> show it -> the fun parts -> why terminal -> how it works (brief) -> try it HN HOOK: The tagline. "The elegance of MS Paint meets the user-friendliness of Vim wrapped in the performance…

More than five years after SwiftUI's release, how well does it hold up for building a first-class Mac app?

An industry veteran in my circles has recently made the rookie mistake1 of printing a warning from his code upon misuse. Surprisingly to nobody experienced, critical workflows soon came to a…

computing scheme guile mcron Guile Argument Parsing https://khleedril.org/blog/2026-05-06--guile-arguments.html khleedril.org/2026-05-06--guile-arguments Dale Mellor https://khleedril.org/dale-mellor…

Design tokens are code: the single source of truth for design decisions — colour, typography, spacing, shadows — across your design system. When they're right, they keep products consistent. When…

This post is a continuation of my exploration of the RANSAC algorithm . In my previous post , I began investigating if I could auto-tune some of the input parameters. The first attempt was not a…

This famous XKCD keeps popping into my mind as I watch Claude Code insisting on running stuff like find . -name "*.py" | xargs grep "function_name" across a fifty-thousand-line…

My good mate Yaroslav wrote about his new solution for bundling a complete Bun runtime inside a gem - by all means, give it a read. A lot of points he makes are very sensible, but for a few months…

Over the last decade, I’ve made a bunch of sites using some mix of data/content. The most popular of these is endoflife.date , but there’s also hackercouch.com , mf.captnemo.in and a bunch more. My…

Back in the day when we wrote actual code instead of poking at an AI, I had a general rule for when to refactor repeated code. Do it once, fine. Do it a second time, fine. Do it a third time -…

Multi-Token Prediction turns Qwen 3.6 27B from 6 t/s to 30 t/s on AMD Strix Halo, succeeding where draft models and ngram decoding failed, by using prediction heads baked into the model itself.

Agentic engineering is the future. But it's still unclear which harness will win, if any. I've been hedging my bets by moving to a harness-agnostic system for AI skills so no matter the harness I…

For proper rendering of code blocks, math, and interactive elements, read this post on the website . Claude Code exposes rate-limit data in the statusline JSON: a used percentage and a reset…

Functional core, imperative shell. Haskell's IO monad. Clojure's immutable data structures. What's common in all of these? They sidestep the problem, which is IO. Reading from disk. Talking to the…

In a previous post, I introduced Koka and why I started porting ls to it. But I never wrote about the actual backstory.

We've spent the past few months integrating Herb into the GitHub.com monolith. It caught numerous bugs missed by our existing tooling and allowed us to migrate off the effectively-archived erb_lint,…

Using tensor network notation to understand multi-head attention, MQA, talking-heads attention, and DeepSeek's MLA.

The entire architecture in the book fits into one sentence: Controller → Service → Gateway → Storage, with strict dependency direction and one job per layer. It isn't a new methodology, it's a…

Deptool is a new declarative configuration deployment tool that I built for myself. In this post I describe the design, and I explain what problems it solves.

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I Built My Own Personal Finance App, and Now I Want More Personal Software I do not think AI will replace every app with one giant productivity blob. I do think AI changes something more interesting:…

Free animated backgrounds for HTML webpages

Did you know that Golang map iteration is non-deterministic? When I first heard this, I couldn’t believe it. I thought to myself, "Computer instructions will run the same way every single time. That…

Our 80-minute workshop at AI Engineering London on building Claude Code skills that are portable, executable, and composable. Constraints over instructions, evidence over guesses, measurement over…

While Guile Scheme has a lot of hidden gems, like (ice-9 peg) , parsing command line arguments is not one of its strengths in my opinion. Even if there are many powerful approaches to structured…

Yesterday I joined Sacha Chua for a new episode of her Emacs Chat podcast, where we talked about Emacs and life. I gave a quick tour of my Emacs configuration, discussing at length my configurations…

A deep dive on flow maps.

Glimmer DSL for Web ( Matz Approved Fukuoka Award Winning Frontend Framework for Rails) had a new release in version 0.9.1 that includes a new sample called Hello, Modal! to teach how to create…

A list of projects I would love for others (or myself) to ship

In the previous post we gave superpowers to the harness in the form of a bash tool. Even doing it just for the learning experience, it was already very eye-opening. It made this little Swift harness…

In the previous post we talked about creating attracting manifolds and how to get the corresponding vector field given a manifold. In this one, we talk about optimization. Suppose we have…

Catching air in the middle of the deep-dive on Scheme bytecode interpreters.

I was recently researching the Microsoft SQL Server DATETRUNC function, which returns an input date truncated to the specified date part.

In my previous post, I mentioned I started a task to identify RSS feeds for US newspapers. It took three Claude sessions to complete (hit token limit three times before completing the main part of…

A common pattern in modern software is to map a string key to a small array of floating-point numbers. Word embeddings, feature vectors, lookup tables for physical constants: all variations on the…

Blue Ridge Ruby 2026 🔗I returned to Asheville for the first time since 2023. Both times for the Blue Ridge Ruby conference. Both times convinced for the same reason: organizer Jeremy Smith. Both…

Substage Substage is a command bar that attaches beneath your Finder window. Select files, type what you want in plain English, and Substage generates a Terminal command, previews its side effects,…

Monolithic views are the most common issue in SwiftUI codebases, especially among inexperienced developers. While the declarative nature of SwiftUI makes it possible to quickly put together complex…

This is the fifth post in my series on Emacs completion. The first, Incremental Completing Read (ICR), explains what modern completion actually is, and how Emacs exposes it as a programmable…

Stop building agents like interns. Nicholas (Superglue) argues that fewer, general-purpose tools — terminals, CLIs, file systems — dramatically outperform large curated toolsets, backed by examples…

Unencrypted secrets on developer workstations and long-lived credentials in continuous integration environments have long been considered bad practice. But they have often been tolerated because the…

A few months ago I built yolobox because I did not trust Claude Code with my home directory.

I don't like using Xcode and I wanted to see if I could start building a native MacOS app without it. Turns out it's really easy with Swift! what you need Swift, via Xcode: I installed…