Guix QEMU built without libusb support

Guix QEMU built without libusb support

[白い熊＠相撲道]

I'd like to use QEMU in GuixSD with direct USB passthrough support. 
However, "info usbhost" in QEMU monitor gives me "usb host devices not 
supported". I think this means the recipe for QEMU in Guix builds QEMU 
without libusb and thus it doesn't support host devices.

Looking at qemu description in guix doesn't list libusb as a dependency, 
so that strengthens my suspicion.

I haven't experimented with Guix package recipes yet and so am not 
advanced enough to modify the Scheme file and build it locally yet, so 
I'd like to request help here - if this is indeed the case - if someone 
could modify the recipe and push to the repository, so QEMU would be 
built with libusb support to enable the USB host functionality.

Could anyone do this? Many thanks.
-- 
白い熊＠相撲道

Re: Guix QEMU built without libusb support

[Ludovic Courtès]

白い熊＠相撲道 <guix-devel_gnu.org@sumou.com> skribis:

> I'd like to use QEMU in GuixSD with direct USB passthrough
> support. However, "info usbhost" in QEMU monitor gives me "usb host
> devices not supported". I think this means the recipe for QEMU in Guix
> builds QEMU without libusb and thus it doesn't support host devices.
>
> Looking at qemu description in guix doesn't list libusb as a
> dependency, so that strengthens my suspicion.

Thanks for the report.  I noticed that our libusb was too old for QEMU,
so I updated it and then added libusb as a dependency of QEMU in commit
732665a.  It’s currently in a branch that we’ll merge when Hydra has
built it.

Ludo’.

Re: Guix QEMU built without libusb support

[Ludovic Courtès]

ludo@gnu.org (Ludovic Courtès) skribis:

> 白い熊＠相撲道 <guix-devel_gnu.org@sumou.com> skribis:
>
>> I'd like to use QEMU in GuixSD with direct USB passthrough
>> support. However, "info usbhost" in QEMU monitor gives me "usb host
>> devices not supported". I think this means the recipe for QEMU in Guix
>> builds QEMU without libusb and thus it doesn't support host devices.
>>
>> Looking at qemu description in guix doesn't list libusb as a
>> dependency, so that strengthens my suspicion.
>
> Thanks for the report.  I noticed that our libusb was too old for QEMU,
> so I updated it and then added libusb as a dependency of QEMU in commit
> 732665a.  It’s currently in a branch that we’ll merge when Hydra has
> built it.

This is now merged in ‘master.’

Ludo’.