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Show HN: Nucleus – A security-hardened, Nix-native container runtime
🚀 Nucleus: Lightweight, Security-Hardened Container Runtime for Ephemeral AI and NixOS Services. Nucleus offers robust isolation and reproducibility for untrusted or ephemeral workloads on a single host, featuring defense-in-depth defaults, deny-by-default egress, and externalized security policies, making it ideal for AI-agent sandboxes and declarative NixOS services. Its Nix-native production path and formal verification ensure secure and reliable operations.
2:05 am, June 10, 2026
guid
https://news.ycombinator.com/item?id=48469039
source_url
https://github.com/sig-id/nucleus
author_name
0kenx
id: 3667
uid: pDvXE
insdate: 2026-06-10 02:05:19
title: Show HN: Nucleus – A security-hardened, Nix-native container runtime
additional: 🚀 Nucleus: Lightweight, Security-Hardened Container Runtime for Ephemeral AI and NixOS Services. Nucleus offers robust isolation and reproducibility for untrusted or ephemeral workloads on a single host, featuring defense-in-depth defaults, deny-by-default egress, and externalized security policies, making it ideal for AI-agent sandboxes and declarative NixOS services. Its Nix-native production path and formal verification ensure secure and reliable operations.
category: Hacker News
md5:
guid: https://news.ycombinator.com/item?id=48469039
source_url: https://github.com/sig-id/nucleus
updated:
image:
author_name: 0kenx
author_link:
uid: pDvXE
insdate: 2026-06-10 02:05:19
title: Show HN: Nucleus – A security-hardened, Nix-native container runtime
additional: 🚀 Nucleus: Lightweight, Security-Hardened Container Runtime for Ephemeral AI and NixOS Services. Nucleus offers robust isolation and reproducibility for untrusted or ephemeral workloads on a single host, featuring defense-in-depth defaults, deny-by-default egress, and externalized security policies, making it ideal for AI-agent sandboxes and declarative NixOS services. Its Nix-native production path and formal verification ensure secure and reliable operations.
category: Hacker News
md5:
guid: https://news.ycombinator.com/item?id=48469039
source_url: https://github.com/sig-id/nucleus
updated:
image:
author_name: 0kenx
author_link:
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- Armstrong Effect
- Around 200 Stanford students walk out as Google CEO takes stage
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- Ars Technica Fires Reporter After AI Controversy Involving Fabricated Quotes
- Ars Technica fires reporter after AI controversy involving fabricated quotes
- Ars Technica: Our newsroom AI policy
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- Artie (YC S23) Is Hiring Software Engineers
- Artificial intelligence is not conscious – Ted Chiang
- Artificial-life: A simple (300 lines of code) reproduction of Computational Life
- As a result of a US Government directive, we are suspending access to Fable 5
- As downtown Seattle offices empty, city facing years of 'zombie' towers
- Asahi Linux 7.1 Progress Report
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- Asian AI startups launch Mythos-like models
- Ask ChatGPT to pick a number from 1-10000, it generally selects from 7200-7500
- Ask HN: Academic study on AI's impact on software development – want to join?
- Ask HN: Add flag for AI-generated articles
- Ask HN: Anthropic banned me from using Claude Code and I don't know what to do
- Ask HN: Any AWS billing issues known? Amazon forecast of 3 billion dollars
- Ask HN: Apple terminated our dev account over a rogue employee
- Ask HN: Are most corporate SWE jobs performative?
- Ask HN: Due to spam on GitHub, what platforms can I move my projects?
- Ask HN: European Tech Alternatives?
- Ask HN: Have top AI research institutions just given up on the idea of safety?
- Ask HN: How are you all staying sane?
- Ask HN: How did you land your first projects as a solo engineer/consultant?
- Ask HN: How do you handle marketing as a solo technical founder?
- Ask HN: How is AI-assisted coding going for you professionally?
- Ask HN: How to Be Alone?
- Ask HN: How to be SOC2 Type 2 compliant as a solo-entreprenuer?
- Ask HN: Is "no source code was copied" still a sufficient copyright defense?
- Ask HN: Is GitHub preparing to go behind a login wall?
- Ask HN: Is anyone experimenting with different ways of using LLMs for coding?
- Ask HN: Is anyone working at least 4 hours daily on an Apple Vision Pro?
- Ask HN: Is it just me, or is software buggier across the board?
- Ask HN: My ISP is telling my neighbors their slow internet is because of me
- Ask HN: Please restrict new accounts from posting
- Ask HN: Remember Fidonet?
- Ask HN: Share your productive usage of OpenClaw
- Ask HN: So what happened to Facebook "localhost" tracking?
- Ask HN: What Are You Working On? (July 2026)
- Ask HN: What Are You Working On? (March 2026)
- Ask HN: What are you working on? (June 2026)
- Ask HN: What are you working on? (May 2026)
- Ask HN: Who is hiring? (June 2026)
- Ask HN: Who is hiring? (March 2026)
- Ask HN: Who wants to be hired? (June 2026)
- Ask HN: Why hasn't there been a real competitor to Ticketmaster yet?
- Ask HN: Why is the HN crowd so anti-AI?
- Ask HN: Will programmers write more efficient code during the memory shortage?
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- Aspartame is not that bad?
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- Astra: An open-source observatory control software
- Astro 7.0
- Astronauts describe persistent 'observer' sensation after 6 month missions
- Astronomers Find the Edge of the Milky Way
- Astronomers find the edge of the Milky Way
- Astrophysicists Puzzle over Webb’s New Universe
- Async Programming Is Just Inject Time
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- At Protocol: Building the Social Internet
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- At long last, InfoWars is ours
- Atlassian Enables Default Data Collection to Train AI
- Atlassian defends firing engineer for suggesting CEO is 'rich jerk'
- Atlassian to cut roughly 1,600 jobs in pivot to AI
- Atomic Display Switching: Solving
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- AutoKernel: Autoresearch for GPU Kernels
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- BMW Group to deploy humanoid robots in production in Germany for the first time
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- BYD overtakes Tesla and Kia as the best-selling EV brand in key overseas markets
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- Beyond Semantic Similarity
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- Biggest Probabilistic Computer Turns Noise into Answers
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- Bild AI (YC W25) Is Hiring a Founding Product Engineer
- Billion-Parameter Theories
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- Binary GCD
- Biology is a Burrito: A text- and visual-based journey through a living cell
- Biscuit
- Bitburner, programming-based incremental game
- Bitcoin and quantum computing
- Bitcoin miners are losing $19,000 on every BTC produced as difficulty drops 7.8%
- Bitmap fonts make computers feel like computers again
- Bitwarden scrubs 'Always free' and 'Inclusion' values from its site
- Bjarne Stroustrup: How do I deal with memory leaks? (2022)
- Blacksky AppView
- Blaise – A modern self-hosting zero-legacy Object Pascal compiler targeting QBE
- Blatant AI slop just won a 25k USD DeepMind Kaggle Grand Prize
- Block spent $68M on a single party in September 2025
- Block the "Upgrade to Tahoe" Alerts
- Block the “Upgrade to Tahoe” Alerts
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- Blog ran on Ubuntu 16.04 for 10 years. I migrated it to FreeBSD
- Blogger defeats photographer's copyright claim
- Blogging can just be stating the obvious
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- Bloom (YC P26) Is Hiring
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- Boy I was wrong about the Fediverse
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- Breaking Free
- Breakthroughs for batteries could soon make them better
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- Bring Back Idiomatic Design
- Bring back crappy forums
- Bring your own Agent to MS Teams
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- Britain is ejecting hereditary nobles from Parliament after 700 years
- Britain today generating 90%+ of electricity from renewables
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- British Columbia, Time Zones, and Postgres
- Bubble Sorted Amen Break
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- Bun has an open PR adding shared-memory threads to JavaScriptCore
- Bun is being ported from Zig to Rust
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- BunnyCDN has been silently losing our production files for 15 months
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- Businesses with ugly AI menu redesigns
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- Byrne's Euclid
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- C++26 is done ISO C++ standards meeting, Trip Report
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- CBP Directive 3340-049B: Border Search of Electronic Devices
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- CC-Canary: Detect early signs of regressions in Claude Code
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- CEOs Who Think AI Replaces Their Employees Are Just Bad CEOs
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- CISA Admin Leaked AWS GovCloud Keys on GitHub
- CODA: Rewriting Transformer Blocks as GEMM-Epilogue Programs
- CPanel and WHM Authentication Bypass – CVE-2026-41940
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- CRDTs merge concurrent edits. Why not concurrent creation?
- CSP for Pentesters: Understanding the Fundamentals
- CSS as a Query Language
- CSS is DOOMed
- CSS-Native Parallax Effect
- CSSQuake
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- CUDA-oxide: Nvidia's official Rust to CUDA compiler
- CVE-2026-25089: FortiSandbox unauthenticated command injection added to CISA KEV
- CVE-2026-28952: Apple macOS 26.5 Kernel Vuln found by Claude
- CVE-2026-31431: Copy Fail vs. rootless containers
- CVE-2026-3888: Important Snap Flaw Enables Local Privilege Escalation to Root
- CVE-Bench: testing LLM agents on real-world vulnerability patches
- Cal.diy: open-source community edition of cal.com
- California bill would require patches or refunds when online games shut down
- California farmers to destroy 420k peach trees following Del Monte bankruptcy
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- Cambodia unveils a statue of famous landmine-sniffing rat Magawa
- Can Claude Fly a Plane?
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- Can LLMs Perform Deep Technical Comprehension of Computer Architecture Papers
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- Can a MUD evaluate LLMs? A $99 proof of concept
- Can a wealthy family change the course of a deadly brain disease?
- Can the stockmarket swallow Anthropic, SpaceX and OpenAI?
- Can we code our way out of gentrification?
- Can we have the day off?
- Can you instruct a robot to make a PBJ sandwich?
- Can you stop beans from making you gassy?
- Can't Stop the Signal. Poison It
- Canada is looking to build up to 10 new nuclear reactors over the next 15 years
- Canada plans 'nuclear renaissance' with up to 10 reactors built by 2040
- Canada to order military plane fleet from Sweden in shift from US suppliers
- Canada's bill C-22 mandates mass metadata surveillance
- Canada's bill C-22 mandates mass metadata surveillance of Canadians
- Canada’s Bill C-22 Is a Repackaged Version of Last Year’s Surveillance Nightmare
- Cancel ChatGPT AI boycott surges after OpenAI pentagon military deal
- Cannabinoids remove plaque-forming Alzheimer's proteins from brain cells
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- Cannibalism
- Canonical Under Attack
- Canvas (Instructure) LMS Down in Ongoing Ransomware Attack
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- Capability-Based Security for Redox: Namespace and CWD as Capabilities
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- Capstone – multi-platform, multi-architecture disassembly framework
- Captcha proves you're human. HATCHA proves you're not
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- Care homes and hotels in Japan shut as expansion strategy unravels
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- Case study: recovery of a corrupted 12 TB multi-device pool
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- Castor: CERN Advanced STORage Manager
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- Celebrating Tony Hoare's mark on computer science
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- Claude Brain
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- Claude Code conducts A/B tests on core features
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- Claude Code – Everything You Can Configure That the Docs Don't Tell You
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- Closure of the Weatheradio service in Canada
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- Codex-maxxing
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