From mboxrd@z Thu Jan  1 00:00:00 1970
From: Quilro Ordonez <quiliro@riseup.net>
Subject: bug#23409: unable to load free firmware
Date: Tue, 03 May 2016 16:17:46 -0500
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Cc: lxo@fsfla.org

El 2016-05-03 15:45, ludo@gnu.org escribió:
> Quilro Ordonez <quiliro@riseup.net> skribis:
> 
>> El 2016-05-03 03:01, ludo@gnu.org escribió:
> 
> [...]
> 
>>> Could you try, as root, something like (use the right package and
>>> module
>>> name below):
>>> 
>>>   echo -n $(guix build b43-firmware-whatever)/lib/firmware \
>>>      > /sys/module/firmware_class/parameters/path
>>>   insmod b43-module-whatever-its-called
>>>   dmesg | tail
>>> 
>>> … and report back?
>> 
>> These are the three options I tested:
>> 
>> echo -n $(guix build b43-firmware-whatever)/lib/firmware      >
>> /sys/module/firmware_class/parameters/path
>> echo -n $(guix build b43-open)/lib/firmware      >
>> /sys/module/firmware_class/parameters/path
>> echo -n $(guix build b43-tools)/lib/firmware      >
>> /sys/module/firmware_class/parameters/path
>> echo -n $(guix build openfwwf)/lib/firmware      >
>> /sys/module/firmware_class/parameters/path
>> echo -n $(guix build openfwwf-firmware)/lib/firmware      >
>> /sys/module/firmware_class/parameters/path
>> 
>> The results for all those in the order of:
>> 
>> guix build: error: openfwwf-firmware: unknown package
> 
> That’s because “openfwwf-firmware” is not the right package name, or is
> not found.  Perhaps you need to adjust GUIX_PACKAGE_PATH so that the
> recipe for “openfwwf-firmware” is found?

I suppose the path can be found with:
ls /gnu/store/*/ucode5.fw
/gnu/store/l7k3psmq08ad40swi1kf9as4bjizlz7i-openfwwf-firmware-5.2/ucode5.fw
/gnu/store/yjycspnbxyafys84hn4f1phjy37fai20-openfwwf-firmware-5.2/ucode5.fw

>   sudo bash
>   export GUIX_PACKAGE_PATH=/path/to/recipes
>   echo -n $(guix build openfwwf-firmware)/lib/firmware > \
>      /sys/module/firmware_class/parameters/path

So the path would be:
export GUIX_PACKAGE_PATH=/openfwwf-firmware-5.2

Is that correct?