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Ask HN: What Are You Working On? (April 2026)

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Re: Ask HN: What Are You Working On? (April 2026)

#203
I am building a virtual machine that starts as fast as containers and can be made portable and easy to use like containers.

free, open source -> https://github.com/smol-machines/smolvm

I worked with firecracker a lot back in the day and realized it was a pain to use. And containers had a lot of gotchas too.

Since sandboxing is all the rage now - I think it'd be a better infra primitive than firecracker that works locally/remote and etc.

Re: Ask HN: What Are You Working On? (April 2026)

#204
WASM- & V8 isolate-based operating system that's (almost) POSIX-compliant, including its own network stack, VFS, process tree, etc.

Allows you to compile most C or Rust programs to run in it without modification. Also can run Claude Code, Codex, Pi, and OpenCode unmodified.

Working on polishing, security, and documentation so I can share an in-depth deep dive on HN.

https://github.com/rivet-dev/agent-os

Re: Ask HN: What Are You Working On? (April 2026)

#209
https://github.com/exabrial/petrify

Petrify is a machine learning model compiler for the the JVM. It reads your model from an ONNX or other model format, walks the Trees or Linear models, and encodes the model in equivalent JVM bytecode as a stateless class you can invoke.

This differs from every other ONNX Runtime that I know of, which are essentially interpreters. The ONNX Runtimes are also huge (90+mb!?!), JNI, and drag gargantuan dependencies!

This just compiles your models to native bytecode. Much simpler and you end up with 0 dependencies! (you need one interface technically, but I digress).

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