* chore(aquamarine): take the NPU stack from nixos-unstable-small
* refactor(aquamarine): load the NPU driver via hardware.cpu.intel.npu
Assisted-by: DeepSeek Harness (claude-opus-5-5)
- Add the agent profile (modules/nixos/agent.nix: rootless Podman, linger,
nix-ld) with home/linux/tui.nix as its home role; ruby, kana and
aquamarine use it, so hosts no longer import from hosts/idols-ruby.
- Gate nushell's ~/.secrets source behind modules.shell.secrets.enable,
off on agent hosts.
- Persist the TUI home state on aquamarine's tmpfs root.
- Document host profiles in hosts/README.md; add tests/agent-profile and
drop the x86_64 colmena-parity test, which needs mysecrets.
Assisted-by: Claude Code (claude-opus-5-5)
bb899876 moved the proxy gateway to fake-IP for IPv6 and removed
aquamarine's getaddrinfo precedence table, so the row's removal condition
has been met since 2026-10-14; only the row and a comment pointer lingered.
Assisted-by: Claude Code (claude-opus-5-5)
The homelab hosts accept root SSH with long-lived file keys, run several
exposed services with almost no systemd sandboxing, and keep no audit trail of
privileged actions. Close those three gaps, weighing each measure against its
cost instead of adopting a policy wholesale.
SSH
- Turn off KbdInteractiveAuthentication: nixpkgs defaults it to true and PAM
then still accepts the Unix password despite PasswordAuthentication = false.
- authorizedKeysInHomedir = false: only keys declared in Nix take effect;
youko keeps Gitea's forced-command file through `Match User gitea`.
- Pin aquamarine's passphrase-free remote-builder keys to
`restrict,command="nix-daemon --stdio --store daemon"`, so builds run in the
system daemon instead of an audited root login session.
systemd sandboxing
- Add the mylib.systemdHardening preset and apply it to the exposed, weakly
sandboxed services: caddy 7.8 -> 1.5, vmalert 8.2 -> 1.4, rustfs 6.6 -> 1.4,
whisper-asr 7.7 -> 1.6. An eval test pins the key restrictions.
- Rejected: a global all-keys policy (<=0.2 score gains on services nixpkgs
already sandboxes) and per-service confinement (bind paths to maintain).
auditd on all four hosts, reusing nixpkgs' loader and unit
- Audit login sessions only: a first `-a never,task -F auid=unset` rule keeps
services out of the per-syscall audit path. A compromised service is
therefore unrecorded until it opens a session.
- Record root commands, credential and host-key access, writes to SSH, account,
PAM, Nix-trust and audit configuration, module loads and session denials.
- Rejected: global denial logging, service-UID watches and
--loginuid-immutable (the kernel already records loginuid changes).
Verified on all four hosts after deployment: zero failed units, k3s 6/6 Ready,
and the exposed services healthy.
Assisted-by: Claude Code (claude-opus-5-5)
* feat(aquamarine): make the iGPU usable for media and OpenVINO
The R9700s stay reserved for inference: VA-API/QSV transcoding moves to the iGPU media
engine, and `openvino-gpu` works around ROCm's OpenCL loader shadowing the plugin's
`ocl-icd` (WA-038).
Assisted-by: DeepSeek Harness 0.2.1-rc.2 (deepseek-v4.1-flash)
* docs(aquamarine): document OpenVINO on the iGPU
How to run models on the iGPU: the `openvino-gpu` wrapper, the encoder staticization Whisper needs
on `GPU`, compile/steady timings and memory, and the language and cache caveats.
Assisted-by: DeepSeek Harness 0.2.1-rc.2 (deepseek-v4.1-flash)
The goal is speech recognition on the NPU for vinput, and sherpa-onnx cannot
deliver it: every model it loads keeps a dynamic time axis, which the NPU
compiler rejects outright. Qwen3-ASR and SenseVoice both core-dumped in
vpux-compiler ("Got non broadcastable dimensions pair"), and reshaping the ONNX
inputs does not help because the dynamic dimensions sit inside the graph
(WA-037). Whisper is the only family OpenVINO publishes fully static IRs for,
and its fixed 30 s window is exactly what the compiler accepts.
The host now runs an OpenAI-compatible /v1/audio/transcriptions service backed
by whisper-large-v3-turbo int8 on the NPU: 1.5 s for 11 s of audio against
2.1 s on CPU, with the compiled graph cached in /var/cache so only a cold cache
pays the ~60 s NPU compile. vinput on the desktop sends raw PCM to it through a
small provider script.
Only the NPU driver and compiler still come from the unmerged branch in the
`nixpkgs-npu` input (NixOS/nixpkgs#570230), whose nixpkgs also happens to be
the one where openvino-genai 2026.4.0.0 builds at all.
Assisted-by: DeepSeek Harness 0.2.1-rc.2 (deepseek-v4.1-flash)
Aquamarine builds for ai and shoukei across the three platforms, with both
daemons logging in as root. They authenticate with their passphrase-free SSH
host keys, and ssh_known_hosts now carries each builder's address.
Assisted-by: DeepSeek Harness 0.2.0-rc.2 (deepseek-flash)
The Z890 board and its root SSD move here from `ai`, and the retired VM's name and 192.168.5.101 are reused.
Assisted-by: DeepSeek Harness (deepseek-flash)
Aquamarine's services now run directly on kubevirt-youko, so the guest
definition is no longer needed:
- move its service modules to hosts/k8s/kubevirt-youko/aquamarine/ and
drop the explicit import list, leaving aquamarine-services.nix with
just its IP and secret groups
- delete the guest base, journald override, output entry and home config
- repoint the eval tests that read the guest's config to kubevirt-youko
- drop the now-dead 'aqua' colmena recipe and its image upload
The aqua KubeVirt VM itself is deleted separately; the name is kept in
the docs for a possible later test microvm/qemu-vm on idols-ai.
ryan4yin | 二花
Ryan Yin