Harden the hardware-enablement broad seed for newer hardware:
- xe vs i915: intel.guc emits the i915 param (i915.enable_guc=3), which the
newer `xe` driver (Lunar Lake / Battlemage / Panther Lake, recent Xe GPUs)
ignores — it enables GuC by default. hardware-db.sh now reads the in-use
GPU driver (lspci -k) and writes `intel.guc = false` on xe hardware, so the
toggle isn't a misleading no-op there.
- NPU detection by PCI accelerator class [1200] (+ keywords), attributing the
vendor, instead of a fixed device-ID list — so new NPUs (e.g. Panther Lake)
are caught without a code change. Known IDs kept as a fallback/reference.
- Kernel awareness: a nomarchy.hardware.latestKernel escape hatch
(linuxPackages_latest) for very-new hardware whose drivers only just landed,
and a build-time warning when npu.enable predates the shipped kernel
(amdxdna needs 6.14+, intel_vpu wants recent). Downstream default is 6.18,
which already carries amd-pstate + amdxdna; the reference host pins latest.
- VM test (checks.hardware-toggles, pkgs.testers.runNixOSTest): boots a
minimal VM with the toggles on and asserts the config landed — amd_pstate
+ i915.enable_guc in /proc/cmdline, fprintd.service present, pam_fprintd in
/etc/pam.d/sudo. Passing. (Hardware behaviour still needs bare metal.)
Docs: README + template note latestKernel; ROADMAP records the hardening.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
The nixos-hardware "common-*" profiles the installer selects cover the
basics (microcode, the Intel/AMD VA-API media stack, weekly fstrim), and
power.nix adds thermald + power-profiles-daemon. This adds the gap above
them, generically and detected at install time.
New modules/nixos/hardware.nix exposes a vendor-keyed nomarchy.hardware.*
surface — broadly-beneficial bits default ON when the vendor is detected
(opt-out), heavy/experimental bits behind opt-in toggles:
- intel.enable -> GuC/HuC (i915.enable_guc=3); intel.computeRuntime
(opt-in: intel-compute-runtime + vpl-gpu-rt)
- amd.enable -> amd_pstate=active + radeonsi VA-API env; amd.rocm.enable
+ amd.rocm.gfxOverride (opt-in: ROCm HIP/OpenCL)
- fingerprint.enable -> fprintd; fingerprint.pam (opt-in: login + sudo)
- npu.enable (opt-in/experimental) -> the in-kernel driver
(amdxdna/intel_vpu) keyed by vendor; userspace runtime is BYO
hardware-db.sh now detects Intel/AMD, a fingerprint reader (libfprint USB
vendor IDs) and an NPU (Intel VPU / AMD XDNA PCI IDs), emitting NOMARCHY
lines the installer bakes into system.nix — safe defaults active, opt-ins
commented. Audited against the commons to avoid double-setting.
Verified: flake check green; a toggles-on build has amd_pstate=active +
i915.enable_guc=3 in kernel-params and ships fprintd.service; detection
runs correctly on the (AMD Ryzen-AI) dev machine. On-hardware verification
of the AMD/NPU/Intel-compute runtime bits is still pending.
Docs: template commented examples, README option table, ROADMAP status.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
