[bug#63508] [PATCH v2 4/4] gnu: eudev: Have udevadm look in /etc/udev/rules.d. (Closes: #63508)

[Felix Lechner]

Hi Liliana,

Thank you for your kind review! I will push a new version with
squashed commits you requested shortly.

While I am new to Guix, I am not sure that Gexp conversions fall under
"style changes" in my book. I believe they are considerably more
complex, and fraught with greater error.

On Wed, May 17, 2023 at 9:19 PM Liliana Marie Prikler
<liliana.prikler@gmail.com> wrote:
>
> you may object that
> this doesn't mention /etc/udev/rules.d and thus could be problematic on
> foreign distributions, but I argue that you probably shouldn't mess
> with foreign udev anyway, and if you do that setting
> EUDEV_RULES_DIRECTORY is appropriate.

The intent of my patch was not to mention /etc/udev/rules.d
explicitly, but rather to replace the store folder that holds the
upstream rules, which we are currently using, with the one Guix
constructs in order to use rules from other places. That just happens
to be /etc/udev/rules.d as well.

On that note, my patch is not suitable for upstream because it
hardcodes the location to the runtime path in Guix. Other
distributions may keep them in a different place. The current Autoconf
setup probably works well for them.

Either way, udevadm in Guix is currently broken. This patch fixes it
and should please be accepted. Thanks!

As noted elsewhere [1] I am separately working on an update to eudev
3.2.12 but that will require more testing locally before I can send it
in.

Kind regards
Felix

[1] https://lists.gnu.org/archive/html/guix-devel/2023-05/msg00217.html