Hacker News: stefanhoelzl

New comment by stefanhoelzl in "Ask HN: What is your dev set up like?"

stefanhoelzl — Mon, 06 Apr 2026 16:39:43 +0000

Until October 2026 I used mainly PyCharm.

Since then I do all my dev work with Claude Code. And currently pulling in more and more workflows into Codehydra including PRs and Issue management.

New comment by stefanhoelzl in "Ask HN: What are you working on? (April 2026)"

stefanhoelzl — Thu, 02 Apr 2026 11:40:21 +0000

a IDE to work with multiple AI agents in isolated workspaces. https://codehydra.dev / https://github.com/stefanhoelzl/codehydra

It is not only isolating with a git worktree but also all other context related to this task (previews, reviews) and allows the agent to interact with this context via notifications and so on.

New comment by stefanhoelzl in "Ask HN: How do you offload all coding to AI?"

stefanhoelzl — Wed, 25 Mar 2026 18:44:58 +0000

Do not wait for your agent, launch parallel tasks when your agent is working. Then it does not matter anymore how long your agent takes, as long as you always have at least one idle agent.

Codehydra (https://github.com/stefanhoelzl/codehydra) can help you with this workflow.

New comment by stefanhoelzl in "Ask HN: What Are You Working On? (March 2026)"

stefanhoelzl — Mon, 09 Mar 2026 13:05:22 +0000

Solving my issue with context switching when working with multiple coding agent sessions.

https://github.com/stefanhoelzl/codehydra

Always looking for feedback and ideas how others handle this!

New comment by stefanhoelzl in "Show HN: CodeHydra – Run multiple isolated AI coding agents in parallel"

stefanhoelzl — Tue, 24 Feb 2026 16:42:07 +0000

I was building Codehydra because since I started using coding agents, my workflow changed dramatically. I mostly run multiple sessions at once and I am mostly reviewing and testing the changes.

The context switching and keeping track of my running tasks got very demanding. Thats why I built Codehydra, it easily helps to keep track of my sessions and notifies me, which session need attention. It also allows me to automate the integrated VSCode in a way that it immediately presents the results when done with a task, so as soon as I switch to the session, I can immediately start the review/testing and see what was done. By using git worktrees I can test/review all changes in isolation.

Happy to answer questions and hear feedback. And also curious to hear what workflows/tools others would use this for.

Show HN: CodeHydra – Run multiple isolated AI coding agents in parallel

stefanhoelzl — Tue, 24 Feb 2026 16:41:55 +0000

Article URL: https://codehydra.dev/

Comments URL: https://news.ycombinator.com/item?id=47139233

Points: 1

# Comments: 1

New comment by stefanhoelzl in "Ask HN: What are you working on? (February 2026)"

stefanhoelzl — Tue, 10 Feb 2026 00:12:34 +0000

CodeHydra (https://github.com/stefanhoelzl/codehydra or https://codehydra.dev) a multi-workspace IDE for parallel AI agent development.

I've been using AI coding agents for more and more tasks, but didnt have the right tool to orchestrate. I'd kick off a task, then sit there waiting for the agent to finish before I could start the next one or had multiple terminals open was constantly checking which agents are busy and which are idle. Running multiple agents against the same repo also isn't optimal, and manually creating git worktrees added a lot of friction to my workflows.

Thats why I built CodeHydra. Just it at one or multiple local or remote git repos and it creates lightweight workspaces using git worktrees. Each workspace gets its own embedded VS Code and AI agent. You see all your workspaces in a sidebar with real-time status indicators showing which agents are idle or busy. I typically run 1-3 projects with up to 6 workspaces in parallel — review one agent's workwhile others keep going. I also put some effort into good keyboard navigation. So creating, deleting or switching workspaces is very easy by keyboard.

And to really automate our whole workflow, agents can control CodeHydra itself via an MCP server. An agent can close its workspace when it's done, spin up new workspaces for sub-tasks (with an initial prompt), or automate VS Code — like opening a browser preview tab or specific files.

Built with Electron + Svelte 5 + TypeScript. Supports Claude Code and OpenCode as agents. MIT licensed, works on Linux/macOS/Windows.

Try it with `npx codehydra` or `uvx codehydra`. I appreciate any feedback!

Linux Kernel Version Numbers

stefanhoelzl — Tue, 09 Dec 2025 18:56:58 +0000

Article URL: http://www.kroah.com/log/blog/2025/12/09/linux-kernel-version-numbers/

Comments URL: https://news.ycombinator.com/item?id=46208996

Points: 4

# Comments: 0

New comment by stefanhoelzl in "Framework (2nd Gen) Event is live on February 25th"

stefanhoelzl — Sun, 16 Feb 2025 22:35:54 +0000

What are your guesses about what they will show?

Framework (2nd Gen) Event is live on February 25th

stefanhoelzl — Sun, 16 Feb 2025 22:35:54 +0000

Article URL: https://community.frame.work/t/framework-2nd-gen-event-is-live-on-february-25th/64412

Comments URL: https://news.ycombinator.com/item?id=43072461

Points: 4

# Comments: 2

Linux kernel could cut energy use in data centres by up to 30 per cent

stefanhoelzl — Mon, 27 Jan 2025 15:17:48 +0000

Article URL: https://cs.uwaterloo.ca/news/cheriton-school-computer-science-researchers-update-linux

Comments URL: https://news.ycombinator.com/item?id=42841981

Points: 33

# Comments: 4

New comment by stefanhoelzl in "Ask HN: Is “Distributed CI” Possible?"

stefanhoelzl — Wed, 27 Sep 2023 12:33:11 +0000

You could try Bazel with a remote cache https://bazel.build/remote/caching

But it requires some work to move all your build an test targets to bazel.

Ask HN: End-of-Line Testing Solution

stefanhoelzl — Tue, 08 Nov 2022 11:21:53 +0000

Hello HN,

I am interested in how other small electronics companies handle their End-of-Line testing and programming.

I am working for a small company (2.5 firmware devs, 2.5 software devs and 1 hardware guy)

We design and sell small electronic devices (RFID Reader), let them produce by a partner company but provides them with custom hardware and software to perform End-of-Line testing and programming.

I have inherited this EOL testing software and now need to maintain and implement new features, but it is a huge mess. So we are looking into replacing everything.

Currently everything is written in Python (the main language for software in the whole company) We flash a custom test firmware the DUT and perform different tests LED flashing Buzzer working RFID range Various Interfaces (USB, Erhernet/PoE, Rs485, Rs232, Bluetooth …) At the end we program the final firmware and configuration into the device and print labels.

Currently everything is homebrewed (software and hardware) and I am interested in more off the shelf solutions which can be customized.

How are you tackling this in your company?

Comments URL: https://news.ycombinator.com/item?id=33518032

Points: 1

# Comments: 0

New comment by stefanhoelzl in "What happens to the hardware (MacBooks, Monitors, Chairs) of failed startups?"

stefanhoelzl — Sat, 18 Jun 2022 21:06:47 +0000

If the company went bankrupt, the liquidator tries to get as much money as possible back.

I know from one case where all the IT equipment was sold to an auction house.

Tachyum Prodogy claims SPECrate 2017 Integer performance of around 4x Intel 8380

stefanhoelzl — Fri, 10 Jun 2022 11:27:23 +0000

Article URL: https://www.tachyum.com/media/press-releases/2022/05/11/tachyum-delivers-the-highest-ai-and-hpc-performance-with-the-launch-of-the-worlds-first-universal-processor/

Comments URL: https://news.ycombinator.com/item?id=31692565

Points: 1

# Comments: 0

Ampere Strategy and Product Roadmap Update, 2022

stefanhoelzl — Mon, 30 May 2022 14:33:17 +0000

Article URL: https://www.youtube.com/watch?v=rxPt7bpXGSk

Comments URL: https://news.ycombinator.com/item?id=31559389

Points: 1

# Comments: 0

Things are getting Rusty in the Linux kernel

stefanhoelzl — Thu, 19 May 2022 07:26:05 +0000

Article URL: https://hackaday.com/2022/05/17/things-are-getting-rusty-in-kernel-land/

Comments URL: https://news.ycombinator.com/item?id=31431724

Points: 6

# Comments: 0

New comment by stefanhoelzl in "Running C unit tests with Pytest"

stefanhoelzl — Sat, 12 Feb 2022 18:07:58 +0000

This similar project could also be interesting https://github.com/mrh1997/headlock

It is used at my company to test our firmware written in C with python and was developed by a colleague.

New comment by stefanhoelzl in "Air France missed to register support domain"

stefanhoelzl — Mon, 06 Dec 2021 15:33:20 +0000

btw CNIL is the french national data protection authority https://en.wikipedia.org/wiki/Commission_nationale_de_l%27in...

New comment by stefanhoelzl in "Air France missed to register support domain"

stefanhoelzl — Mon, 06 Dec 2021 15:28:52 +0000

currently this page says:

Dear Air France, After filling in your Web form for a refund of my flight ticket, your infrastructure generated an e-mail to this domain which was then promptly bounced back to me since you failed to register it. I then spend 1h listening to bad quality music in your support hotline, before giving up. As you failed to register this domain, I registered it for you. Once you have processed my support request we can discuss me not forwarding all received emails to CNIL anymore. Have a good day! Christian