[Nix-dev] udev-153

[Eelco Dolstra]

Hi,

Yury G. Kudryashov wrote:

> Udev 153 released. New release does not allow us to rewrite firmware search 
> path at runtime, but it allows us to specify --with-firmware-
> path=path1:path2:... configure option.
> 
> I propose to use /var/run/firmware:/root/test-firmware path, and symlink 
> /var/run/firmware to /nix/store/hash-firmware. /nix/store/hash-firmware will 
> contain symlinks to all files in hardware.firmware directory. This will not 
> allow us to modify the set of firmware files symlinked to /var/run/firmware 
> after the system is built, but for emergency case we'll have impure 
> /root/test-firmware path.

Sounds good, but to improve the atomicity of switching to a new configuration,
you could use /var/run/current-system/firmware instead of /var/run/firmware (and
then create a "firmware" symlink in the "system" derivation).

-- 
Eelco Dolstra | http://www.st.ewi.tudelft.nl/~dolstra/