Mastodawn

Thanks to @yuka inter-VM networking in #SpectrumOS is now entirely in userspace — the host kernel networking stack is not involved, to the point I think we could just build it with CONFIG_INET=n. Packets are forwarded between application VMs and a VM running the network drivers. This is done with a routing daemon that all the VMs connect to via vhost-user, and an XDP program in the driver VM that forwards packets between a hardware network interface and the virtio-net device from the router.

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Else, Someone Sep 9, 2025

I did get to ask a few things about #SpectrumOS and virtio-gpu, although not nearly as many as I should have, given the opportunity: my thoughts were a tangled mess and I didn't feel like truly forcing myself. I was given an entire lecture about #Bazel by Andreas of TWEAG, with an eye to maybe eventually addressing the #nixpkgs #tensorflow situation.

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Elias Probst Aug 20, 2025

@agowa338 check out #SpectrumOS by @qyliss
https://spectrum-os.org/

Spectrum, a step towards usable secure computing

Alyssa Ross Jan 17, 2025

aarch64 support in #SpectrumOS is now at parity with x86_64 support! It uses systemd-stub's new .dtbauto mechanism so the generic image can automatically (try to) load the right device tree for the device it's running on.

Alyssa Ross Oct 27, 2024

Looked a bit into how Flatpak works. It looks like shouldn't be too difficult to figure out which paths from the OSTree repo should be passed through, so I think getting Flatpaks working in #SpectrumOS won't be quite as difficult as I thought :3

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Alyssa Ross Oct 25, 2024

It's up! https://spectrum-os.org/doc/using-spectrum/running-vms.html#transient-vms-for-appimages

Ended up chasing one regression after another trying to do a final Nixpkgs upgrade, so took a lot longer than I expected.

Ask me about it at NixCon ^^

#SpectrumOS