Re: [PATCH 0/8] kdevops: small NIXOS and gen_hosts fixes

[Daniel Gomez <da.gomez@kernel.org>]

On 23/04/2026 15.50, Chuck Lever wrote:
> 
> 
> On Wed, Apr 22, 2026, at 6:16 PM, Daniel Gomez wrote:
>> Small cleanups picked up while building the new bringup backend that
>> depends on this series. Each patch is independent and stands on its
>> own: duplicated Makefile vars, ineffective silent recipe guards, libvirt
>> XML and cleanup path drift on the NIXOS role, and gen_hosts rough edges
>> around inventory group scoping and inventory owner refresh.
>>
>> Preparatory series for the upstreaming of nixos-qemu [1] and
>> qemu-system-units [2] as git subtrees. The two projects provide an
>> alternative to kdevops libvirtd, libguestfs, and virsh stack for local
>> VM bringup, one that sidesteps the sudo and privilege escalation the
>> Ansible host-setup playbooks currently need on the control node to drive
>> that stack. libvirt bringup stays the default and is untouched; the
>> alternative is opt-in via Kconfig. qemu-system-units renders the QEMU
>> command line from templates into a systemd user service, so VMs run in
>> the user session with no root daemon and no new wrapper on top of QEMU.
>> nixos-qemu builds image-based and imageless guests declaratively through
>> a NixOS flake, with no libguestfs in the loop.
>>
>> Link: https://github.com/linux-kdevops/nixos-qemu [1]
>> Link: https://github.com/linux-kdevops/qemu-system-units [2]
>> Signed-off-by: Daniel Gomez <da.gomez@samsung.com>
>> ---
>> Daniel Gomez (8):
>>       nixos: remove duplicate nixos_channel extra-var from Makefile
>>       nixos: do not emit comment-only recipe lines under $(Q)
>>       nixos: drop hardcoded qxl video model from libvirt XML
>>       nixos: destroy the libvirt domain before cleaning up local artefacts
>>       gen_hosts: scope the python interpreter per inventory group
>>       gen_hosts: make the linux workflow node name follow bootlinux_builder
>>       defconfigs/nixos: name NIXOS hosts with the "nixos" prefix
>>       gen_hosts: drop sudo become on inventory owner refresh
> 
> Not needing root privilege for local virtualization sounds great
> to me!

Great to hear!

> 
> The only hesitation is I would like to test the gen_hosts changes
> in this series with the cloud providers, but I currently don't
> have any kdevops branch that is newer than 6 months old. I will
> need to update something and try it out.
> 

No problem. FYI, I've pushed b4/nixos-qsu to kdevops [1] repo with all
these 3 series applied. And I'll soon post more patches with fstests
workflow support.

Link: https://github.com/linux-kdevops/kdevops/tree/b4/nixos-qsu [1]