Phosh 0.56.0

Phosh's new release includes improvements such as hiding apps on immutable distros and faster startup times. It also adds new panels and features like atomic OS updates and re-enabling hidden apps.

Introduction to Compilers and Language Design

This is a free online textbook on compiler construction by Prof. Douglas Thain, suitable for undergraduate students with C programming experience. The book offers a one semester introduction to building a simple compiler for a C-like language.

If you're a button, you have one job

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You're concerned that your interactive essay may appear old-fashioned, but its challenges are universal. A predictable and pleasant interface is essential, even for casual users, to avoid situational disability and power user-ness.

Shadcn/UI now defaults to Base UI instead of Radix

https://ui.shadcn.com/_next/image?url=%2Fimages%2Frhea-light.png&w=3840&q=75&dpl=dpl_EEsyiWuonzGkyNCanptY2cnVtzze
Shadcn/ui has rebuilt every component for Base UI, keeping the same abstraction, and letting users choose between Radix and Base UI. New projects default to Base UI, and a migration skill is available to help users migrate their existing projects from Radix to Base UI.

Show HN: KiCad in the Browser

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The list contains various electronic components and modules. It includes amplifiers, converters, CPLDs, CPUs, devices, diodes, displays, drivers, DSPs, fiber optics, filters, FPGAs, GPUs, interfaces, isolators, jumpers, LEDs, logic, MCUs, memory, motors, oscillators, potentiometers, power management, regulators, relays, RF components, sensors, switches, timers, transformers, transistors, and valves.

Trust your compiler: Modern C++

https://categorica.io/_app/immutable/assets/ctg_icon.CcTidov5.svg
Modern C++ compilers and libraries can often optimize code more effectively than hand-written "clever" code, making it easier to write straightforward and efficient code. By using modern C++ features and standard library functions, developers can express their intent directly and let the compiler and library do the optimization work.

Claude Design System Prompt

https://opengraph.githubassets.com/0b72473d0b6cf46520b1e6f7cadfce94c386c63c03122c6b769ddcfaee23ad0a/Trystan-SA/claude-design-system-prompt
This system prompt and skill library turns an LLM into a design collaborator with an explicit design philosophy and procedural skills. It's open source, MIT licensed, and can be used with various LLMs, including Claude, GPT, and Gemini.

Pandoc Lua Filters

Pandoc supports filters written in Lua without external dependencies, allowing for efficient manipulation of the pandoc abstract syntax tree (AST).

Fast Software, the Best Software (2019)

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The user values fast software that is both functional and intuitive, citing examples of speedy applications like nvALT, Sublime Text, and Figma, which provide a smooth user experience and allow for efficient workflow. Slow software, on the other hand, can be frustrating and lead to decreased productivity, as seen in examples like Google Maps, iTunes, and older versions of Adobe Photoshop.

Knowledge Should Not Be Gated

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The author argues that traditional approaches to knowledge management, such as retrieval-augmented generation, have gated knowledge behind infrastructure and made it unreadable.

Jellyfish can heal wounds in minutes. Scientists want their secrets

https://www.mbl.edu/sites/default/files/styles/medium/public/2026-06/clytiaeditedtoremovenumbersRESIZED.jpg?itok=hmafHZfP
Clytia hemisphaerica jellyfish have transparent bodies allowing researchers to study wound healing in real time. Scientists can observe epithelial cells stitching damaged tissue back together, revealing conserved mechanisms of wound healing across different species.

Pi square is nearly 10

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The user discusses the number tau, pi, and their approximations. They explore the Basel problem and its relation to the approximation of pi squared being close to 10.

Megawatts by Microwave

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The US Army Corps of Engineers and the Bureau of Reclamation built dams on the Columbia River for various reasons, including irrigation, electricity, and national defense. The Bonneville Power Administration (BPA) was formed to distribute power from these dams, creating a regional power grid and pioneering modern electricity pricing and distribution.

Artful Cats: Feline-Inspired Art and Artifacts

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Moby Dick Workout (2022)

You test productivity apps with large texts like "Moby Dick" to ensure they handle user-generated content. If an app passes this test, it may be suitable for your needs, but failing doesn't necessarily mean it's bad.

Command and Conquer Generals natively ported to macOS, iPhone, iPad using Fable

https://private-user-images.githubusercontent.com/159876365/617135099-aeaf6692-36e6-40c8-b9f8-8066d014ec4b.gif?jwt=eyJ0eXAiOiJKV1QiLCJhbGciOiJIUzI1NiJ9.eyJpc3MiOiJnaXRodWIuY29tIiwiYXVkIjoicmF3LmdpdGh1YnVzZXJjb250ZW50LmNvbSIsImtleSI6ImtleTUiLCJleHAiOjE3ODMxOTUyMDksIm5iZiI6MTc4MzE5NDkwOSwicGF0aCI6Ii8xNTk4NzYzNjUvNjE3MTM1MDk5LWFlYWY2NjkyLTM2ZTYtNDBjOC1iOWY4LTgwNjZkMDE0ZWM0Yi5naWY_WC1BbXotQWxnb3JpdGhtPUFXUzQtSE1BQy1TSEEyNTYmWC1BbXotQ3JlZGVudGlhbD1BS0lBVkNPRFlMU0E1M1BRSzRaQSUyRjIwMjYwNzA0JTJGdXMtZWFzdC0xJTJGczMlMkZhd3M0X3JlcXVlc3QmWC1BbXotRGF0ZT0yMDI2MDcwNFQxOTU1MDlaJlgtQW16LUV4cGlyZXM9MzAwJlgtQW16LVNpZ25hdHVyZT0yNDBjM2ExZDU0YzZmN2Q5M2NhNmFlMTk1ZTg0ZmI0ODY3Y2I4N2Q2MjAxYTgzZjA3ODJiYjc0Nzc1ZWJiZjg3JlgtQW16LVNpZ25lZEhlYWRlcnM9aG9zdCZyZXNwb25zZS1jb250ZW50LXR5cGU9aW1hZ2UlMkZnaWYifQ.3RG-XHsmRzmhc6nyNFA6DFywAMia98mihfWcI29Dirk
Command & Conquer Generals: Zero Hour runs natively on Apple devices with real 2003 engine, using DXVK/MoltenVK and touch controls. Requires own game assets and Apple Developer team for iOS build.

Functional Programming in hica

https://www.hica.dev/assets/hica-logo2.png
hica is a functional programming language that uses immutable data, expressions, and functions as first-class values. It promotes pure functions, recursion, and algebraic data types to make code easier to test, name, and reuse.

Scientist who cleaned space toilet on work now leading Mars exploration

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Claire Parfitt, a 42-year-old engineer, leads a team at the European Space Agency planning future Mars missions. She credits her early work experience at the National Space Centre in Leicester with inspiring her space career.

Medieval-style fortifications are back in the Sahel

https://www.economist.com/cdn-cgi/image/width=1424,quality=80,format=auto/content-assets/images/20260627_MAP506.jpg
N remains today of the walls, ramparts and moats that once surrounded Benin City in southern Nigeria. Yet for centuries these giant earthworks—second in length only to China’s Great Wall among man-made structures—bespoke a mighty civilisation whose authority extended across much of west Africa. By the standards of pre-colonial Africa, the Benin state was exceptionally strong: erecting the ...

Meta's Un-Stable Signature

The user investigated three AI-based invisible watermark algorithms, SynthID, TrustMark, and Stable Signature, and found that they all make the same fundamental mistake of assuming independent and uniformly distributed bits, leading to inflated accuracy rates and high error rates. The user's empirical testing and statistical analysis revealed that these algorithms have error rates of around ...

Atomic Force Microscope [video]

Reducing Assumptions, Exploding Your Code

The user discusses the trade-off between a simple, elegant script and one that handles real-world imperfections and user input validation. They explore alternative failure handling models in Rye, a language that treats failure as a normal value, blending with the language's faculties.

The Log is the Agent

https://arxiv.org/static/browse/0.3.4/images/arxiv-logo-fb.png
ActiveGraph inverts the typical agent framework arrangement, with an append-only event log as the source of truth and a working graph as a deterministic projection. This design provides deterministic replay, cheap forking, and end-to-end lineage, making it well-suited for self-improving agents.

What ORMs have taught me: just learn SQL (2014)

The user has had negative experiences with Object-Relational Mappers (ORMs) and believes they should not replace SQL, but rather augment it. They recommend learning SQL to write efficient queries and manage database interactions, and suggest using templated SQL or stored procedures for complex queries.

“Beyond the limit”: Satellites and mirrors in space pose threat to the night sky

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A new ESO study warns that launching 1.7 million satellites would devastate astronomy, recommending no more than 100,000 faint satellites to safeguard night sky observations.

GPT-5.5 Codex reasoning-token clustering may be leading to degraded performance

https://opengraph.githubassets.com/099e4c84e3b8a7191641778b799c670095fb15e7827f947ecb81b7c509907ec0/openai/codex/issues/30364
GPT-5.5 responses disproportionately cluster at 516 reasoning tokens with related spikes at 1034 and 1552. This pattern suggests a possible reasoning-budget or truncation behavior in GPT-5.5.

My ASN Journey series (2024)

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The user is on an ASN journey to explore BGP and own an IP address, focusing on IPv6 due to its availability and lower costs. They created a tutorial on setting up BGP from scratch and discuss the benefits and challenges of owning an ASN and IPv6.

Return of the Nigerian Prince Redux: Beware Book Club and Book Review Scams (2025)

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A Nigerian scammer is using AI-generated emails to target authors with personalized marketing offers, then demanding access to their KDP accounts. The scammer is now using various iterations, including book club impersonations and fake private review groups, to charge authors for features or spotlights.

About the Digital Art

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The author discovered digital art on the 128K Macintosh in 1984 and created popular clip art and comics using MacPaint. She learned through trial and error, not manuals, and eventually worked with Disney, Paramount, and other top studios, but still questions where artistic talent comes from.

Dark mode with web standards

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To respect a user's OS setting and allow customization on a per-site basis, use the prefers-color-scheme media query in CSS and a meta tag to set the color scheme. However, there's a disconnect between color-scheme and prefers-color-scheme, and implementing dark mode can be challenging due to browser limitations and bugs.