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tiernano: Interesting. Wonder could it be modified to work with proxmox?

gmuslera: With Proxmox it could be as well Docker compose for LXC.

johnny22: sure has been awhile since i thought about vagrant

zeroecco: Fair — the YAML shape is similar. The differences that matter to me: GPU passthrough works without fighting the provider plugin ecosystem, healthchecks gate depends_on instead of you sleeping in a provisioner, and there's no Ruby, no vagrant reload, no box format.

frabonacci: it reminds me of https://github.com/dockur/windows with its compose-style YAML over QEMU/KVM. The difference i'm seeing is scope: dockur ships curated OS images (Windows/macOS), while holos looks more like a generic single-host VM runner. Is that a fair read? also curious any plans to support running unattended processes for OS installs?

imiric: Very cool, thanks for sharing.I built something similar recently on top of Incus via Pulumi. I also wanted to avoid libvirt's mountain of XML, and Incus is essentially a lightweight and friendlier interface to QEMU, with some nice QoL features. I'm quite happy with it, though the manifest format is not as fleshed out as what you have here.What's nice about Pulumi is that I can use the Incus Terraform provider from a number of languages saner than HCL. I went with Python, since I also wanted to expose a unified approach to provisioning, which Pyinfra handles well. This allows me to keep the manifest simple, while having the flexibility to expose any underlying resource. I think it's a solid approach, though I still want to polish it a bit before making a public release.

khimaros: check out https://github.com/lnussbaum/incant