Microsoft and OpenAI end their exclusive and revenue-sharing deal

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"Why not just use Lean?"

The author discusses the formalisation of mathematics and the rise of Lean, but notes that it's not the first system to achieve this. They mention AUTOMATH, which was developed in the 1960s and 1970s, and other systems like HOL Light and Isabelle/HOL. The author argues that Lean's success is partly due to its user community and the abandonment of "constructive proofs".

Show HN: OSS Agent I built topped the TerminalBench on Gemini-3-flash-preview

https://camo.githubusercontent.com/7c2146782e5ad29e647e51a95f9290c4e5eba1214d0a736d571de7f55cf7a98b/68747470733a2f2f7777772e64697261632e72756e2f7374617469632f696d616765732f6d756c7469706c655f656469742e706e67
Dirac is an open-source coding agent that improves accuracy and reduces costs by 64.8% with tightly curated context. It achieves 100% accuracy on complex refactoring tasks at a fraction of the cost of other leading agents.

Pgbackrest is no longer being maintained

https://opengraph.githubassets.com/17f9bcbeb7b3b629e014736d09fc3b13c7f8321d08c7a503ab49af94d156e793/pgbackrest/pgbackrest
pgBackRest is a reliable PostgreSQL backup and restore solution that scales up to large databases and workloads. It supports parallel processing, compression, and block-level backups for efficient data storage and retrieval.

The Woes of Sanitizing SVGs

https://muffin.ink/blog/scratch-svg-sanitization/blue.png
Scratch's approach to SVG sanitization has been ineffective due to numerous vulnerabilities discovered over the years. Despite multiple fixes, new security issues continue to arise.

Apple is dropping AFP/TimeCapsule support in macOS 27

https://eclecticlight.co/wp-content/uploads/2015/01/cropped-eclecticlightlogo-e1421784280911.png?w=200
Apple is warning of two significant changes in macOS 27: removal of AFP support and a requirement for TLS 1.2 connections to certain servers. These changes may impact enterprise users and those with Time Capsules or NAS systems that don't support SMB3.

4TB of voice samples just stolen from 40k AI contractors at Mercor

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A data breach at Mercor exposed 40,000 contractors' voice biometrics and ID documents. Attackers can use this data to clone voices and commit crimes like bank verification bypass and vishing.
https://raw.githubusercontent.com/WeebLabs/DSPi/main/Images/toslink.jpg
The DSPi transforms a Raspberry Pi Pico into a digital audio processor with features like room correction, active crossovers, and parametric EQ. It acts as a USB sound card with onboard DSP engine.

Men who stare at walls

https://www.alexselimov.com/posts/men_who_stare_at_walls/cover.webp
User tried Simple Lucas' focus routine, staring at a wall to recover focus, and found it effective but hard. They attribute their lack of focus to information overload and use wall staring with parasympathetic activation and mind blanking to improve productivity.

Tendril – a self-extending agent that builds and registers its own tools

https://opengraph.githubassets.com/fa66585c962c1d83b5c3ffef3ca74f3ce594d9d0f1c4c22fea0ddcec772e8397/serverless-dna/tendril
Tendril is a self-extending agentic sandbox that discovers and builds tools autonomously. It uses a Strands agent with three bootstrap tools to rule them all.

FDA Approves First-Ever Gene Therapy for Treatment of Genetic Hearing Loss

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Flipdiscs

https://flipdisc.io/og-image.jpg
The user built a large interactive wall art using flipdiscs, a display type that utilizes electromagnetic pulses to flip small discs between two colors, and paired it with an Nvidia Orin Nano for processing power. The user created a library for using flipdisc screens in Node.js and built a reliable interface for the display using an expo app, allowing users to control and customize the display.

Den stora Γ„lgvandringen – The great moose migration (live)

https://www.svtstatic.se/image/custom/1144/54091618/1777080936?format=auto&chromaSubSampling=false&enableAvif=true&quality=85
lgarna vandrar samma leder i tusen Γ₯r fΓΆr att nΓ₯ rika betesmarker. FΓΆlj Γ₯rets Γ₯ttonde sΓ€song av Γ€lgvandringen pΓ₯ SVT Play.

I bought Friendster for $30k – Here's what I'm doing with it

https://miro.medium.com/v2/resize:fit:700/1*9R5yu4-oc3LFPOje_tDTzg.png
The domain name friendster.com was bought for $7456 in an auction and later sold for $20k in Bitcoin. The new owner created a social network with unique features like phone tapping to connect friends and fading connections to encourage in-person interactions.

US Supreme Court Reviews Police Use of Cell Location Data to Find Criminals

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Managing the Unmanaged Switch

https://watchmysys.com/blog/wp-content/uploads/2026/03/TL-SG108.jpg
The TL-SG108 is an 8 port Gigabit Ethernet switch based on the Realtek RTL8370N chip, which can be upgraded to a managed switch by replacing the 4Mbit SPI flash with a 32Mbit one. The switch's MAC address and serial number can be modified to avoid conflicts.

Show HN: Utilyze – an open source GPU monitoring tool more accurate than nvtop

https://framerusercontent.com/images/H4Oud0RNKPwPQmK3x0Gcc7yYcQ.png?width=4800&height=1918
The world is on the brink of an AI compute crisis. The electricity demand of AI clusters is rising quickly, lead times for acquiring GPUs stretch into months, and NVIDIA H100 one-year rental contract pricing rose almost 40% from October 2025 to March 2026. Getting more hardware is slow, expensive, and for many organizations, simply not an option. Such scarcity in AI compute puts ...

Quarkdown – Markdown with Superpowers

https://quarkdown.com/_astro/no-boilerplate.SaDlAnd3_Z16VNJW.webp
No boilerplate Versatile Whether you are writing a research paper, a quick report, a company-wide wiki, class notes, or preparing interactive slides for your next talk, there's only one line you need.

Dutch central bank dithces AWS and chooses Lidl for European Cloud

https://www.techzine.eu/wp-content/uploads/2025/01/lidl-winkel-768x512.jpg
De Nederlandsche Bank signs major contract with Schwarz Digits to reduce dependence on American cloud companies. The move aims to use a European partner, but raises questions about the robustness of European cloud alternatives.

Running Local LLMs Offline on a Ten-Hour Flight

https://deploy.live/img/2026-04-22-local-llms-flight.jpg
The user tested a MacBook's local LLM capabilities on a 10-hour flight, processing 4M tokens and discovering local inference's viability for tight-scope coding and exploratory tasks.

Understanding the short circuit in solid-state batteries

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Researchers at the Max Planck Institute found that lithium-metal electrodes generate hydrostatic stress causing the solid electrolyte to fracture during charging. This discovery could help prevent short circuits in solid-state batteries and pave the way for their commercial use.

AI should elevate your thinking, not replace it

https://www.koshyjohn.com/blog/ai-should-elevate-your-thinking-not-replace-it/blog_social.jpg
The future of software engineering will belong to those who use AI to augment their skills, not replace them, by focusing on judgment, clarity, and original thought. Effective engineers will know what to delegate to AI and what to own, turning time savings into better thinking and avoiding the trap of shallow understanding and imitation.

Getting my daily news from a dot matrix printer 2024

https://aschmelyun.com/storage/images/andrew-schmelyun-profile.jpg
The user built a custom "front page" printer using a dot matrix printer, Raspberry Pi, and PHP script to print out news, stocks, and Reddit posts every morning. The project was a fun way to integrate old hardware with new technology and reduce screen time, and the user plans to explore more uses for the dot matrix printer.

Show HN: A terminal spreadsheet editor with Vim keybindings

https://raw.githubusercontent.com/garritfra/cell/main/assets/cell.png
The library opens various file formats including CSV, TSV, and native .cell files. It tracks ODF formula compliance and saves CSV files with flattened formula values.

TurboQuant: A first-principles walkthrough

A vector is an ordered list of numbers that can be thought of as an arrow in space, and its length and inner product can be calculated using the norm and dot product. The goal of TurboQuant is to store a vector using a fixed number of bits per coordinate while minimizing the mean squared error (MSE) of the reconstructed vector, and it achieves this by applying a random rotation to the vector ...

Self-updating screenshots

The user built an automated screenshot system for a help centre in Jelly, using Rake tasks and a headless Chrome browser. This system updates screenshots automatically when the UI changes, reducing maintenance and keeping the help centre current.

The Prompt API

https://developer.chrome.com/static/docs/ai/prompt-api/images/cover.png
The Prompt API allows developers to send natural language requests to Gemini Nano in the browser for various applications. It requires a minimum of 22 GB free space, unlimited data, and Windows 10 or 11, macOS 13+, or Linux operating systems.

Supreme Court to Hear Arguments in Landmark Roundup Weedkiller Case

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Three constraints before I build anything

To ensure creativity and focus, I use three constraints: a one pager that captures my north star, a core piece of technology that supports my product, and a defining constraint that gives my product identity. If a project fails to meet any of these constraints, I don't build it, as it will likely result in a complex, bloated, or unidentifiable product.

Branimir Lambov from IBM on Cassandra

Branimir, a Cassandra committer, shares his background and experience working on software infrastructure. He started with digital signals processing and natural language processing before joining IBM and contributing to Cassandra for over a decade.