News from the Planet

A tutorial on searching, streaming, visualizing, and downloading NASA Earth observation data inside QGIS using the NASA Earthdata plugin and OpenGeoAgent for natural-language and voice workflows.

A tutorial on using OpenGeoAgent with the QGIS Timelapse plugin to generate Landsat, MODIS, GOES, and Esri Wayback timelapse animations from natural language and voice prompts.

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 argument parsing, there is no API simple enough for me to know it by heart (as opposed for example to…

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

How I did my part in saving the planet by getting an old but working audio interface up, running and mainlined in GNU Guix. Read the whole post here.

A step-by-step tutorial on installing the NASA OPERA QGIS plugin, searching and visualizing DSWx surface water products, and using an integrated AI agent to analyze flood events with natural language and voice commands.

Guix will be featured at the annual conference of the French Reproducible Research Network, 19–21 May 2026, Bordeaux, France.

A while back I decided to stop using Tailwind for new projects and to just write vanilla CSS instead. But one thing I missed about Tailwind was the colour palette (here as CSS). If I wanted a light blue I could just use blue-100 and if I didn’t like it maybe try blue-200 or blue-50. I’m not very…

Introducing OpenGeoAgent, an open-source multimodal AI agent that automates geospatial analysis and visualization in QGIS through natural language and voice commands.

Hello! One of my long term projects on here is figuring out how to write frontend Javascript without using Node or any other server JS runtime. One issue I run into a lot in my frontend JS projects is that I don’t know how to write tests for them. I’ve tried to use Playwright in the past, but it…

On the internet, anyone can make a request to your web service. Especially in this time of abusive web crawling linked to AI/LLM companies, it's essential to program in a defensive style and stay in control, even when faced with a volume of requests that can't be handled.

A step-by-step tutorial on building a developer blog with the MyST Markdown template, deploying it to GitHub Pages, and enabling GitHub Discussions-backed comments with Giscus.

Altering source files using the substitute procedure to search and replace text

A step-by-step tutorial on writing journal articles in MyST Markdown with automatic PDF generation and website deployment using a GitHub template.

Over the past week or two I've been working on a new web framework for Guile. This is based on the knowledge I've accumulated over the past 7 years working on things like the Guix Data Service, Guix Build Coordinator and Nar Herder, but also based on their code, as I've used Claude Code running…

A step-by-step tutorial on building a personal CV website with MyST Markdown and Typst that automatically generates a PDF version of your CV from the same Markdown source.

/ver-teil-en/ [german]: to distribute, to spread, to deal out

A step-by-step video tutorial showing how to create and deploy a personal website using the MyST Markdown template and GitHub Pages, with no coding experience needed.

A GitHub template that bundles MyST Markdown, GitHub Pages deployment, Netlify PR previews, and pre-commit hooks into a ready-to-use starting point.

How I rebuilt gishub.org using MyST Markdown for the website and Typst for automatic CV generation from the same Markdown source files.

I've got a new homeserver/NAS (Network Attached Storage), previously I was using some Raspberry Pis, but I've wanted for a while a low power board that has SATA ports for attaching hard drives and one that could run GNU Guix, and the ZimaBoard 2 looked like it might be a good option.

Guile Knots is a library providing higher-level patterns and building blocks for programming with Guile Fibers.

I have an old Intel macbook 12 of begin 2016, one of the so-called "Retina Macbooks". It is an ideal couch device but far too slow to run modern OS-X, provided you wanted to run that to begin with.

A complete tutorial on using instance segmentation and the Fields of the World dataset to delineate agricultural field boundaries with GeoAI, from data preparation to batch inference.

A step-by-step tutorial on detecting clouds and cloud shadows from satellite imagery using OmniCloudMask and GeoAI, with post-processing, vectorization, and cloud-free mask generation.