[Nix-dev] Linux firmware location

[Michael Raskin]

Ludovic Courtès wrote:
> I couldn't find out how firmware blobs are supposed to be located by
> the kernel under NixOS.  Of course, creating and populating a
> `/lib/firmware' directory does the job, but it's Bad(tm).
> 
> Any hint?

Look at nixos/upstart-jobs/udev-firmware-loader.nix . It references
firmwareDirs variable, and is used by udev.nix in the same directory.

That variable is formed in default.nix, from some predefined directories
for known irmware, and config.services.udev.addFirmware list.